我是java的新手，并且通过这个简单的菜单程序得到了这个，让其他部分工作（因此我添加了它们）但我想知道我做错了什么？我试过调试，但我只是缺乏经验，我真的不明白要做什么。任何建议将不胜感激。我自己想出了大部分内容，只是某些部分不起作用，而且我有点碰壁。
1）报告＃6（reserve_info） - 特定预订信息 - 提示用户输入预订代码，搜索预订阵列并打印预订信息，然后打印特定预订的航班阵列中的航班信息（阅读评论）
2）报告＃7（all_flights） - 所有航班的摘要 - 首先打印来自航班阵列的一个航班的航班信息，然后转到预订阵列并打印该航班的所有预订。然后继续下一班航班......（阅读评论）
3）报告＃9（exit_program） - 此方法将两组并行数组中的所有数据写回flightsx.dat和reservationx.dat文件。因此，如果用户输入新数据或删除数据，则当前阵列将被重写回数据文件。然后，下次程序运行时，将读入新数据。
package PhaseIII;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.StringTokenizer;
import javax.swing.JOptionPane;
public class PhaseIII {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
array_info data= new array_info();
int selection;
selection = data.menu();
//call start_program & start_program1
//DO WHILE LOOP
while(selection!=4)
{
if (selection == 1)
{
//put call to Modify_flight
data.flight_report();
}
else if (selection == 2)
{
//put call to Modify_reservation
data.modify_reservation();
}
else if (selection == 3)
{
//put call to Report
data.report();
}
selection =data.menu();
}//END WHILE LOOP
//call exit_program
data.exit_program();
System.exit(0);
}//end main method
}
class array_info
{
int count=-1,i;
int rcount=-1;
String [] flight = new String [100];
int [] flight_number = new int [100];
String [] origin = new String [100];
String [] destination = new String [100];
String [] date = new String [100];
String [] time = new String [100];
int [] fl_number = new int [100];
int [] reservation_code = new int [100];
String [] last_name = new String [100];
String [] first_name = new String [100];
String [] seat_type = new String [100];
double [] seat_cost = new double [100];{
count=start_program();
rcount=start_program1();{
}
}
int menu()
{
String mnumber;
int number;
String output = "ACME AIRLINE SYSTEM" + " \n " + " \n " +
"1. ADD/MODIFY FLIGHT INFORMATION" + " \n " +
"2. ADD/MODIFY RESERVATION INFORMATION" + " \n " +
"3. REPORT SECTION" + " \n " +
"4. EXIT AIRLINE SYSTEM" + " \n" + " \n " +
"Please make your selection >";
mnumber = JOptionPane.showInputDialog(null, output, " ",
JOptionPane.QUESTION_MESSAGE);
number=Integer.parseInt(mnumber);
return number;
}//method menu
int modify_flight()
{
String mnumber2;
int number2;
String output = "Modify Flight Information Menu" + " \n " + " \n " +
"1. ADD FLIGHT" + " \n " +
"2. DELETE FLIGHT" + " \n " +
"3. MODIFY FLIGHT" + " \n " +
"4. EXIT THIS MENU" + " \n" + " \n " +
"Please make your selection >";
mnumber2 = JOptionPane.showInputDialog(null, output, " ",
JOptionPane.QUESTION_MESSAGE);
number2=Integer.parseInt(mnumber2);
return number2;
}//method modify_flight
int reportmenu()
{
String mnumber3;
int number3;
String output = "ACME AIRLINES" + " \n " +
"1. All Flight Info" + " \n " +
"2. All Reservation Info" + " \n " +
"3. Value of Reservations of a specific type" + " \n " +
"4. All Reservations of a specific flight" + " \n" +
" 5. All Flights from a specific city" + " \n" +
" 6. Specific Reservation Information" + " \n" +
" 7. Summary of all flights" + " \n" +
" 8. All Flights to a specific city" + " \n" +
" 9. Exit Report Menu" + " \n" +
" Please make your selection >";
mnumber3 = JOptionPane.showInputDialog(null, output, " ",
JOptionPane.QUESTION_MESSAGE);
number3=Integer.parseInt(mnumber3);
return number3;
}//method report_menu
int start_program()
{
String newLine;
try
{
//define a file valuable for Buffered read
BufferedReader Flights_file = new BufferedReader(new FileReader("flightsx.dat"));
//read lines in file until there are no more lines in the file to read
while ((newLine = Flights_file.readLine()) != null)
{
//there is a "#" between each data item in each line
StringTokenizer delimiter = new StringTokenizer(newLine,"#");
count=count+1;
flight[count] =delimiter.nextToken();
flight_number[count] = Integer.parseInt(delimiter.nextToken());
origin[count] =delimiter.nextToken();
destination[count] =delimiter.nextToken();
date[count] =delimiter.nextToken();
time[count] =delimiter.nextToken();
}//while loop
Flights_file.close();
}//end try
catch (IOException error)
{
//there was an error on the file writing
System.out.println("Error on file read " + error);
}//error on read
return count;
}//end start_program
int start_program1()
{
String newLine;
try
{
//define a file valuable for Buffered read
BufferedReader Reservation_file = new BufferedReader(new FileReader("reservationx.dat"));
//read lines in file until there are no more lines in the file to read
while ((newLine = Reservation_file.readLine()) != null)
{
//there is a "#" between each data item in each line
StringTokenizer delimiter = new StringTokenizer(newLine,"#");
rcount=rcount+1;
reservation_code[rcount] = Integer.parseInt(delimiter.nextToken());
fl_number[rcount] = Integer.parseInt(delimiter.nextToken());
last_name[rcount] =delimiter.nextToken();
first_name[rcount] =delimiter.nextToken();
seat_type[rcount] =delimiter.nextToken();
seat_cost[rcount] = Double.parseDouble(delimiter.nextToken());
}//while loop
Reservation_file.close();
}//end try
catch (IOException error)
{
//there was an error on the file writing
System.out.println("Error on file read " + error);
}//error on read
return rcount;
}//end start_program1
void flight_report()
{
// DECLARED VARIABLES]
int selection2;
selection2 =modify_flight();
//DO WHILE LOOP
while(selection2!=4)
{
if (selection2 == 1)
{
//put call to add flight
add_flight();
}
else if (selection2 == 2)
{
//put call to delete flight
delete_flight();
}
else if (selection2 == 3)
{
//put call to mod flight
mod_flight();
}
selection2 =modify_flight();
}//END WHILE LOOP
}//method report
int add_flight()
{
//add new flight information
String svalue,Output;
count=count+1;
Output = "Enter the Flight Company"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the Flight Number"; //4 digit integer
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
flight_number[count] = Integer.parseInt(svalue);
Output = "Enter the Flight City Origin"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the Flight City Destination"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the Flight Date"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the Flight Time"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
return count;
}//method modify_flight
void delete_flight()
{
String output, svalue;
int position=0,i,modselect;
output="Enter the Flight Number to delete ";
svalue=JOptionPane.showInputDialog(null,output,
"Input Data",JOptionPane.QUESTION_MESSAGE);;
for(i=0;i<=count;++i)
{
if(flight_number.equals(output))
position =i;
}
for(i=position;i<=count-1;++i)
{
output=output+1;
}
count=count=1;
}
void mod_flight()
{
String output,svalue, value;
int position=0,i,modselect;
output="Enter the Flight Number to modify ";
svalue=JOptionPane.showInputDialog(null,output,
"Input Data",JOptionPane.QUESTION_MESSAGE);;
for(i=0;i<=count;++i)
{
if(flight_number.equals(output))
position =-i;
}
output="";
output=output+"1. Modify Flight Company "+"\n";
output=output+"2. Modify City Origin "+"\n";
output=output+"3. Modify City Destination "+"\n";
output=output+"4. Modify Flight Date "+"\n";
output=output+"5. Modify Flight Time "+"\n";
output=output+" Please make your selection ";
value=JOptionPane.showInputDialog(null,output,
"Input Data",JOptionPane.QUESTION_MESSAGE);
modselect=Integer.parseInt(value);
if(modselect ==1)
{
output = "Enter the Flight Company";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
}
else
if(modselect==2)
{
output = "Enter the Flight City Origin";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
}
else
if(modselect==3)
{
output = "Enter the Flight City Destination";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
}
else
if(modselect==4)
{
output = "Enter the Flight Date";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
}
else
if(modselect==5)
{
output = "Enter the Flight Time";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
}
}
int modify_reservation()
{
//add new flight information
String svalue,Output;
rcount=rcount+1;
Output = "Enter the Reservation Code"; //4 digit integer
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
reservation_code[rcount] = Integer.parseInt(svalue);
Output = "Enter the Flight Number"; //4 digit integer
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
fl_number[rcount] = Integer.parseInt(svalue);
Output = "Enter the Last Name"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the First Name"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the Type of Seat"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the Cost of seat"; //double
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
seat_cost[rcount] = Double.parseDouble(svalue);
return rcount;
}//method modify_reservation
void report()
{
// DECLARED VARIABLES]
int selection3;
selection3 =reportmenu();
//DO WHILE LOOP
while(selection3!=9)
{
if (selection3 == 1)
{
//put call to All Flight Info
display_flight();
}
else if (selection3 == 2)
{
//put call to All Reservation Info
display_reservation();
}
else if (selection3 == 3)
{
//put call to Value of Reservations of a specific type
seat_value();
}
else if (selection3 == 4)
{
//put call to All Reservations on a specific flight
print_flight();
}
else if (selection3 == 5)
{
//put call to All flights from a specific city
city_origin();
}
else if (selection3 == 6)
{
//put call to Specific reservation information
reserve_info();
}
else if (selection3 == 7)
{
//put call to Summary of all flights
all_flights();
}
else if (selection3 == 8)
{
//put call to All flights to a specific city
city_destination();
}
selection3 =reportmenu();
}//END WHILE LOOP
}//method report
void display_flight()
{
int i;
System.out.println("All flight Information:");
for(i=0;i<=count;++i)
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
}
}// method display_flight
void display_reservation()
{
int i;
System.out.println("All Reservations Information:");
for(i=0;i<=rcount;++i)
{
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
}
}// method display_reservation
void seat_value()
{
int i;
double total=0;
String search_seat = "";
String output = "Enter the Seat Type you are searching for";
search_seat = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
for (i = 0; i <=rcount; ++i) {
//CHECK IF coach, first, or business
if(seat_type[i].equals(search_seat))
{
total+=seat_cost[i];
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
}
}
System.out.println("The total for " +search_seat+ " = " +total);
}// method seat_value
void print_flight()
{
int i, total=0;
String search_flight = "";
String output = "Enter the Flight Number you are searching for";
search_flight = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
for (i = 0; i <=rcount; ++i) {
//CHECK flight number
int flight_number = Integer.parseInt(search_flight);
if(fl_number[i] == flight_number)
{
total+=fl_number[i];
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
}
}
}//method print_flight
void city_origin()
{
int i, j;
int match_count= 0;
String search_city = "";
String output = "Enter the City from a particular flight you are searching for";
search_city = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
System.out.println(" All flights from "+search_city);
for (i = 0; i <=count; ++i) {
if(origin[i].equals(search_city))
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
match_count=0;
for (j = 0; j <=rcount; ++j)
{
if(flight_number[i] == fl_number[j])
match_count=match_count+1;
}//j loop
System.out.println("The total reservations for " +flight_number[i]+ " = " +match_count);
}//if match
}
}//method city_origin
void reserve_info()
{
int i, j;
int match_count=0;
String search_reservation = "";
String output = "Enter the Reservation Code";
search_reservation = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
for (i = 0; i <=rcount; ++i) {
//CHECK reservation code
int r_code= Integer.parseInt(search_reservation);
if(reservation_code[i] == r_code)
{
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
match_count=0;
for (j = 0; j <=count; ++j)
{
if(fl_number[i] == flight_number[j]); //print flight info from that fl_number
match_count=match_count+1;
}//j loop
System.out.println(flight[j]+" "+flight_number[j]+" "+origin[j]+" "+destination[j]+" "+date[j]+" "+time[j]);
}//if match
}
}//method reserve_info
void all_flights ()
{
int i;
System.out.println("All flight Information:");
for(i=0;i<=count;++i)
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
}// NEED TO CATEGORIZE ALL RESERVATIONS (FL_NUMBER) BENEATH EACH FLIGHT (FLIGHT_NUMBER)
}//method all_flights
void city_destination ()
{
int i, j;
int match_count= 0;
String search_destination= "";
String output = "Enter the City to a particular flight you are searching for";
search_destination= JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
System.out.println(" All flights from "+search_destination);
for (i = 0; i <=count; ++i)
{
if(destination[i].equals(search_destination))
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
match_count=0;
for (j = 0; j <=rcount; ++j)
{
if(flight_number[i] == fl_number[j])
match_count=match_count+1;
}//j loop
System.out.println("The total reservations for " +flight_number[i]+ " = " +match_count);
}//if match
}
}//method city_destination
void exit_program()
{
System.out.println("Executing exit_program");
}//method exit_program
}//END OF CLASS
答案 0 :(得分：0)
我认为reserve_info（）的问题在于你有一个带分号的if语句，所以什么都不会发生。你应该在它之后加上括号。
if(fl_number[i] == flight_number[j]);
答案 1 :(得分：0)
首先，我为迟到的答案道歉。 这是您的程序的第一个版本。您可以获取，添加，修改和删除航班。您输入的有关航班的所有信息都将保存在flightsx.dat上。
public class PhaseIII {
public static void main(String[] args) {
array_info data= new array_info();
int selection;
selection = data.menu();
//call start_program & start_program1
//DO WHILE LOOP
while(selection!=4)
{
if (selection == 1)
{
//put call to Modify_flight
data.flight_report();
}
else if (selection == 2)
{
//put call to Modify_reservation
//data.modify_reservation();
}
else if (selection == 3)
{
//put call to Report
data.report();
}
selection =data.menu();
}//END WHILE LOOP
//call exit_program
data.exit_program();
System.exit(0);
}//end main method
}
array_info类
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.StringTokenizer;
import javax.swing.JOptionPane;
public class array_info
{
int count=-1;
int rcount=-1;
String [] flight = new String [100];
int [] flight_number = new int [100];
String [] origin = new String [100];
String [] destination = new String [100];
String [] date = new String [100];
String [] time = new String [100];
int [] fl_number = new int [100];
int [] reservation_code = new int [100];
String [] last_name = new String [100];
String [] first_name = new String [100];
String [] seat_type = new String [100];
double [] seat_cost = new double [100];
{
count=start_program();
rcount=start_program1();{
}
}
int menu()
{
String mnumber ="";
int number;
String output = "ACME AIRLINE SYSTEM" + " \n " + " \n " +
"1. ADD/MODIFY FLIGHT INFORMATION" + " \n " +
"2. ADD/MODIFY RESERVATION INFORMATION (Don't Work Yet)" + " \n " +
"3. REPORT SECTION" + " \n " +
"4. EXIT AIRLINE SYSTEM" + " \n" + " \n " +
"Please make your selection >";
mnumber = JOptionPane.showInputDialog(null, output, " ",
JOptionPane.QUESTION_MESSAGE);
if(mnumber == null || mnumber.length() == 0 ){
number = 4;
}
else{
try{
number=Integer.parseInt(mnumber);
}
catch(Exception e){
number = 4;
}
}
return number;
}//method menu
int modify_flight()
{
String mnumber2;
int number2;
String output = "Modify Flight Information Menu" + " \n " + " \n " +
"1. ADD FLIGHT" + " \n " +
"2. DELETE FLIGHT" + " \n " +
"3. MODIFY FLIGHT" + " \n " +
"4. EXIT THIS MENU" + " \n" + " \n " +
"Please make your selection >";
mnumber2 = JOptionPane.showInputDialog(null, output, " ",
JOptionPane.QUESTION_MESSAGE);
if(mnumber2 == null || mnumber2.length() == 0 ){
number2 = 4;
}
else{
try{
number2=Integer.parseInt(mnumber2);
}
catch(Exception e){
number2 = 4;
}
}
return number2;
}//method modify_flight
int reportmenu()
{
String mnumber3;
int number3;
String output = "ACME AIRLINES" + " \n " +
" 1. All Flight Info" + " \n " +
" 2. All Reservation Info (Don't Work Yet)" + " \n " +
" 3. Value of Reservations of a specific type (Don't Work Yet)" + " \n " +
" 4. All Reservations of a specific flight (Don't Work Yet)" + " \n" +
" 5. All Flights from a specific city (Don't Work Yet)" + " \n" +
" 6. Specific Reservation Information (Don't Work Yet)" + " \n" +
" 7. Summary of all flights (Don't Work Yet)" + " \n" +
" 8. All Flights to a specific city (Don't Work Yet)" + " \n" +
" 9. Exit Report Menu" + " \n" +
" Please make your selection >";
mnumber3 = JOptionPane.showInputDialog(null, output, " ",
JOptionPane.QUESTION_MESSAGE);
if(mnumber3 == null || mnumber3.length() == 0 ){
number3 = 9;
}
else{
try{
number3=Integer.parseInt(mnumber3);
}
catch(Exception e){
number3 = 9;
}
}
return number3;
}//method report_menu
int start_program()
{
String newLine;
try
{
//define a file valuable for Buffered read
BufferedReader Flights_file = new BufferedReader(new FileReader("flightsx.dat"));
//read lines in file until there are no more lines in the file to read
while ((newLine = Flights_file.readLine()) != null)
{
//there is a "#" between each data item in each line
StringTokenizer delimiter = new StringTokenizer(newLine,"#");
count=count+1;
flight[count] =delimiter.nextToken();
flight_number[count] = Integer.parseInt(delimiter.nextToken());
origin[count] =delimiter.nextToken();
destination[count] =delimiter.nextToken();
date[count] =delimiter.nextToken();
time[count] =delimiter.nextToken();
}//while loop
Flights_file.close();
}//end try
catch (IOException error)
{
//there was an error on the file writing
System.out.println("Error on file read " + error);
}//error on read
return count;
}//end start_program
int start_program1()
{
String newLine;
try
{
//define a file valuable for Buffered read
BufferedReader Reservation_file = new BufferedReader(new FileReader("reservationx.dat"));
//read lines in file until there are no more lines in the file to read
while ((newLine = Reservation_file.readLine()) != null)
{
//there is a "#" between each data item in each line
StringTokenizer delimiter = new StringTokenizer(newLine,"#");
rcount=rcount+1;
reservation_code[rcount] = Integer.parseInt(delimiter.nextToken());
fl_number[rcount] = Integer.parseInt(delimiter.nextToken());
last_name[rcount] =delimiter.nextToken();
first_name[rcount] =delimiter.nextToken();
seat_type[rcount] =delimiter.nextToken();
seat_cost[rcount] = Double.parseDouble(delimiter.nextToken());
}//while loop
Reservation_file.close();
}//end try
catch (IOException error)
{
//there was an error on the file writing
System.out.println("Error on file read " + error);
}//error on read
return rcount;
}//end start_program1
void flight_report()
{
// DECLARED VARIABLES]
int selection2;
selection2 =modify_flight();
//DO WHILE LOOP
while(selection2!=4)
{
if (selection2 == 1)
{
//put call to add flight
add_flight();
}
else if (selection2 == 2)
{
//put call to delete flight
delete_flight();
}
else if (selection2 == 3)
{
//put call to mod flight
mod_flight();
}
selection2 =modify_flight();
}//END WHILE LOOP
}//method report
int add_flight()
{
//add new flight information
String svalue,Output;
if(count<99){
count=count+1;
Output = "Enter the Flight Company"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
flight[count] = svalue;
Output = "Enter the Flight Number"; //4 digit integer
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
flight_number[count] = Integer.parseInt(svalue);
Output = "Enter the Flight City Origin"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
origin[count] = svalue;
Output = "Enter the Flight City Destination"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
destination[count] = svalue;
Output = "Enter the Flight Date"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
date[count] = svalue;
Output = "Enter the Flight Time"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
time[count] = svalue;
}
return count;
}//method modify_flight
void delete_flight()
{
String output, svalue;
int position=0;
int numFlight = 0;
output="Enter the Flight Number to delete ";
svalue=JOptionPane.showInputDialog(null,output,
"Input Data",JOptionPane.QUESTION_MESSAGE);
if(svalue == null || svalue.length() == 0 ){
numFlight = -1;
}
else{
try{
numFlight=Integer.parseInt(svalue);
}
catch(Exception e){
numFlight = -1;
}
}
if(count>-1 && numFlight > -1){
if(count <99 ){
for(int i=0;i<=count;i++)
{
if(flight_number[i] == numFlight)
position =i;
}
for(int i=position;i<=count;i++)
{
flight_number[i] = flight_number[i+1];
flight[i] = flight[i+1];
origin[i] = origin[i+1];
destination[i] = destination[i+1];
date[i] = date[i+1];
time[i] = time[i+1];
}
}
else{
flight_number[99] = 0;
flight[99] = "";
origin[99] = "";
destination[99] = "";
date[99] = "";
time[99] = "";
}
count-=1;
}
}
void mod_flight()
{
String output,svalue, value;
int position=-1;
int modselect;
int numFlight = 0;
output="Enter the Flight Number to modify ";
svalue=JOptionPane.showInputDialog(null,output,
"Input Data",JOptionPane.QUESTION_MESSAGE);
if(svalue == null || svalue.length() == 0 ){
numFlight = -1;
}
else{
try{
numFlight=Integer.parseInt(svalue);
}
catch(Exception e){
numFlight = -1;
}
}
if(count >-1 && numFlight > -1){
for(int i=0;i<=count;++i)
{
if(flight_number[i] == numFlight)
position =i;
}
if(position>-1){
output="";
output=output+"1. Modify Flight Company "+"\n";
output=output+"2. Modify City Origin "+"\n";
output=output+"3. Modify City Destination "+"\n";
output=output+"4. Modify Flight Date "+"\n";
output=output+"5. Modify Flight Time "+"\n";
output=output+" Please make your selection ";
value=JOptionPane.showInputDialog(null,output,
"Input Data",JOptionPane.QUESTION_MESSAGE);
modselect=Integer.parseInt(value);
if(modselect ==1)
{
output = "Enter the Flight Company";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
flight[position] = svalue;
}
else if(modselect==2)
{
output = "Enter the Flight City Origin";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
origin[position] = svalue;
}
else if(modselect==3)
{
output = "Enter the Flight City Destination";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
destination[position] = svalue;
}
else if(modselect==4)
{
output = "Enter the Flight Date";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
date[position] = svalue;
}
else if(modselect==5)
{
output = "Enter the Flight Time";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
time[position] = svalue;
}
}
}
}
/*int modify_reservation()
{
//add new flight information
String svalue,Output;
rcount=rcount+1;
Output = "Enter the Reservation Code"; //4 digit integer
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
reservation_code[rcount] = Integer.parseInt(svalue);
Output = "Enter the Flight Number"; //4 digit integer
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
fl_number[rcount] = Integer.parseInt(svalue);
Output = "Enter the Last Name"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the First Name"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the Type of Seat"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the Cost of seat"; //double
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
seat_cost[rcount] = Double.parseDouble(svalue);
return rcount;
}*///method modify_reservation
void report()
{
// DECLARED VARIABLES]
int selection3;
selection3 =reportmenu();
//DO WHILE LOOP
while(selection3!=9)
{
if (selection3 == 1)
{
//put call to All Flight Info
display_flight();
}
else if (selection3 == 2)
{
//put call to All Reservation Info
//display_reservation();
}
else if (selection3 == 3)
{
//put call to Value of Reservations of a specific type
//seat_value();
}
else if (selection3 == 4)
{
//put call to All Reservations on a specific flight
//print_flight();
}
else if (selection3 == 5)
{
//put call to All flights from a specific city
//city_origin();
}
else if (selection3 == 6)
{
//put call to Specific reservation information
//reserve_info();
}
else if (selection3 == 7)
{
//put call to Summary of all flights
all_flights();
}
else if (selection3 == 8)
{
//put call to All flights to a specific city
//city_destination();
}
selection3 =reportmenu();
}//END WHILE LOOP
}//method report
void display_flight()
{
int i;
System.out.println("All flight Information:");
for(i=0;i<=count;++i)
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
}
}// method display_flight
/*void display_reservation()
{
int i;
System.out.println("All Reservations Information:");
for(i=0;i<=rcount;++i)
{
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
}
}*/// method display_reservation
/*void seat_value()
{
int i;
double total=0;
String search_seat = "";
String output = "Enter the Seat Type you are searching for";
search_seat = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
for (i = 0; i <=rcount; ++i) {
//CHECK IF coach, first, or business
if(seat_type[i].equals(search_seat))
{
total+=seat_cost[i];
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
}
}
System.out.println("The total for " +search_seat+ " = " +total);
}*/// method seat_value
/*void print_flight()
{
int i;
int total=0;
String search_flight = "";
String output = "Enter the Flight Number you are searching for";
search_flight = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
for (i = 0; i <=rcount; ++i) {
//CHECK flight number
int flight_number = Integer.parseInt(search_flight);
if(fl_number[i] == flight_number)
{
total+=fl_number[i];
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
}
}
}*///method print_flight
/*void city_origin()
{
int i, j;
int match_count= 0;
String search_city = "";
String output = "Enter the City from a particular flight you are searching for";
search_city = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
System.out.println(" All flights from "+search_city);
for (i = 0; i <=count; ++i) {
if(origin[i].equals(search_city))
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
match_count=0;
for (j = 0; j <=rcount; ++j)
{
if(flight_number[i] == fl_number[j])
match_count=match_count+1;
}//j loop
System.out.println("The total reservations for " +flight_number[i]+ " = " +match_count);
}//if match
}
}*///method city_origin
/*void reserve_info()
{
int i, j;
int match_count=0;
String search_reservation = "";
String output = "Enter the Reservation Code";
search_reservation = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
for (i = 0; i <=rcount; ++i) {
//CHECK reservation code
int r_code= Integer.parseInt(search_reservation);
if(reservation_code[i] == r_code)
{
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
match_count=0;
for (j = 0; j <=count; ++j)
{
if(fl_number[i] == flight_number[j]); //print flight info from that fl_number
match_count=match_count+1;
}//j loop
System.out.println(flight[j]+" "+flight_number[j]+" "+origin[j]+" "+destination[j]+" "+date[j]+" "+time[j]);
}//if match
}
}*///method reserve_info
void all_flights ()
{
int i;
System.out.println("All flight Information:");
for(i=0;i<=count;++i)
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
}// NEED TO CATEGORIZE ALL RESERVATIONS (FL_NUMBER) BENEATH EACH FLIGHT (FLIGHT_NUMBER)
}//method all_flights
/*void city_destination ()
{
int i, j;
int match_count= 0;
String search_destination= "";
String output = "Enter the City to a particular flight you are searching for";
search_destination= JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
System.out.println(" All flights from "+search_destination);
for (i = 0; i <=count; ++i)
{
if(destination[i].equals(search_destination))
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
match_count=0;
for (j = 0; j <=rcount; ++j)
{
if(flight_number[i] == fl_number[j])
match_count=match_count+1;
}//j loop
System.out.println("The total reservations for " +flight_number[i]+ " = " +match_count);
}//if match
}
}//method city_destination*/
void exit_program()
{
String string ;
FileWriter fw;
try {
//System.out.println(count);
fw = new FileWriter(new File("flightsx.dat"),false);
BufferedWriter bw = new BufferedWriter(fw);
//String string = "";
for(int i =0;i<=count;i++){
string =flight[i]+"#"+flight_number[i]+"#"+origin[i]+"#"+destination[i]+"#"+date[i]+"#"+time[i]+"\n";
//System.out.println(string);
bw.write(string);
}
bw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("Executing exit_program");
}//method exit_program
}//END OF CLASS
如果这项工作让我知道，你能否就预订，seat_cost和seat_type提供更多解释
FLIGHTSX.DAT中的信息：
Southwest#1234#Pittsburgh#Phoenix#04/02/10#10:30am
USAirways#4567#Boston#New York#04/03/10#11:10am
Jet Blue#9876#Pittsburgh#Seattle#04/04/10#1:30pm
Jet Blue#8888#Chicago#Pittsburgh#04/05/10#2:45pm
Southwest#7777#Pittsburgh#Miami#04/06/10#9:35am
Southwest#2892#Las Vegas#New York#04/07/10#8:10pm
USAirways#4444#Pittsburgh#San Francisco#04/08/10#5:55pm
Jet Blue#2222#Atlanta#New York#04/09/10#4:30pm
Southwest#9281#Pittsburgh#Seattle#04/11/10#2:15pm
USAirways#1000#Pittsburgh#Phoenix#04/12/10#3:25pm
保留的信息X.DAT：
1189#1234#Smith#James#coach#299.99#
1190#9876#Jones#Marie#coach#150.00#
1191#2000#Atkins#John#first#789.00#
1192#1000#Gallo#James#first#465.00#
1193#4567#Marion#Kevin#business#300.00#
1194#4444#Johnson#Greg#business#765.99#
1195#8888#Brown#Andrew#first#567.39#
1196#4567#Green#Eric#coach#234.00#
1197#9876#Thomas#Chris#business#1900.99#
1198#7777#Hilling#Cara#first#876.76#
1199#2222#Cole#James#coach#256.99#
1200#9281#Bartko#Grant#business#896.00#
1201#2000#Best#Curtis#first# 543.99#
1202#1000#Campbell#Nicholas#coach#287.00#
1203#4444#Dietz#Merrialyce#coach# 219.00#
1204#9281#Duran#Alexander#business#690.00#
1205#2892#Gurung#Suraj#first# 789.99#
1206#7777#Kumpfmiller#Ryan#first#278.99#
1207#4444#Mccomb#David#coach#451.99#
1208#8888#Mclain#Jaime#coach#199.00#
1209#9876#Mullen#Matthew#coach#189.00#
1210#1234#Nguyen#Tommy#coach#299.00#
1211#1234#Ossler#Aimee#coach#300.00#
1212#7777#Polenavitch#Michael#coach#198.99#
1213#2222#Raymond#Chase#first#908.99#
1214#2222#Rosales#David#coach#216.99#
1215#2892#Schwartz#Dustin#business#987.00#
1216#4444#Short#Samuel#coach#245.99#
1217#8888#Soltis#Josh#coach#178.00#
1218#1234#Webster#Ronald#business#892.00#
1219#1234#Wielock#William#first#589.00#
1220#2892#Bonelli#Andrew#coach#178.00#
1221#4444#Bright#Adam#coach#235.00#
1222#9876#Clymer#Jesse#coach#568.00#
1223#4444#Costello#Michael#coach#200.00#
1224#7777#Currin#Sean#business#908.00#
1225#1000#Farrar#Gary#first#588.00#
1226#1000#Finn#Lynn#business#799.00#
1227#4567#Freise#Brian#coach#254.00#
1228#4567#Huang#Pao-Jen#coach# 199.00#
1229#4567#Kamani#Nelson#coach#150.00#
1230#2000#Loughner#Ryan#coach#175.00#
1231#2000#Menzies#Adam#coach#199.00#
1232#1234#Neupane#Kiran#coach# 135.00#
1233#1234#Nickel#Brandon#first#999.00#
1234#7777#Ropchack#Joseph#first#899.00#
1235#7777#Whitten#Walter#coach#786.99#
1236#4444#Woods#Mary#coach#299.00#
1237#4444#Xing#Zhenli#coach#126.00#
答案 2 :(得分：0)
这是array_info Class的第2版。第三阶段仍然是一样的。
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.StringTokenizer;
import javax.swing.JOptionPane;
public class array_info
{
int count=-1;
int rcount=-1;
String [] flight = new String [100];
int [] flight_number = new int [100];
String [] origin = new String [100];
String [] destination = new String [100];
String [] date = new String [100];
String [] time = new String [100];
int [] fl_number = new int [100];
int [] reservation_code = new int [100];
String [] last_name = new String [100];
String [] first_name = new String [100];
String [] seat_type = new String [100];
double [] seat_cost = new double [100];
{
count=start_program();
rcount=start_program1();{
}
}
int menu()
{
String mnumber ="";
int number;
String output = "ACME AIRLINE SYSTEM" + " \n " + " \n " +
"1. ADD/MODIFY FLIGHT INFORMATION" + " \n " +
"2. ADD/MODIFY RESERVATION INFORMATION (Don't Work Yet)" + " \n " +
"3. REPORT SECTION" + " \n " +
"4. EXIT AIRLINE SYSTEM" + " \n" + " \n " +
"Please make your selection >";
mnumber = JOptionPane.showInputDialog(null, output, " ",
JOptionPane.QUESTION_MESSAGE);
if(mnumber == null || mnumber.length() == 0 ){
number = 4;
}
else{
try{
number=Integer.parseInt(mnumber);
}
catch(Exception e){
number = 4;
}
}
return number;
}//method menu
int modify_flight()
{
String mnumber2;
int number2;
String output = "Modify Flight Information Menu" + " \n " + " \n " +
"1. ADD FLIGHT" + " \n " +
"2. DELETE FLIGHT" + " \n " +
"3. MODIFY FLIGHT" + " \n " +
"4. EXIT THIS MENU" + " \n" + " \n " +
"Please make your selection >";
mnumber2 = JOptionPane.showInputDialog(null, output, " ",
JOptionPane.QUESTION_MESSAGE);
if(mnumber2 == null || mnumber2.length() == 0 ){
number2 = 4;
}
else{
try{
number2=Integer.parseInt(mnumber2);
}
catch(Exception e){
number2 = 4;
}
}
return number2;
}//method modify_flight
int reportmenu()
{
String mnumber3;
int number3;
String output = "ACME AIRLINES" + " \n " +
" 1. All Flight Info" + " \n " +
" 2. All Reservation Info " + " \n " +
" 3. Value of Reservations of a specific type " + " \n " +
" 4. All Reservations of a specific flight " + " \n" +
" 5. All Flights from a specific city " + " \n" +
" 6. Specific Reservation Information " + " \n" +
" 7. Summary of all flights " + " \n" +
" 8. All Flights to a specific city " + " \n" +
" 9. Exit Report Menu" + " \n" +
" Please make your selection >";
mnumber3 = JOptionPane.showInputDialog(null, output, " ",
JOptionPane.QUESTION_MESSAGE);
try{
number3=Integer.parseInt(mnumber3);
}
catch(Exception e){
number3 = 9;
}
return number3;
}//method report_menu
int start_program()
{
String newLine;
try
{
//define a file valuable for Buffered read
BufferedReader Flights_file = new BufferedReader(new FileReader("flightsx.dat"));
//read lines in file until there are no more lines in the file to read
while ((newLine = Flights_file.readLine()) != null)
{
//there is a "#" between each data item in each line
StringTokenizer delimiter = new StringTokenizer(newLine,"#");
count=count+1;
flight[count] =delimiter.nextToken();
flight_number[count] = Integer.parseInt(delimiter.nextToken());
origin[count] =delimiter.nextToken();
destination[count] =delimiter.nextToken();
date[count] =delimiter.nextToken();
time[count] =delimiter.nextToken();
}//while loop
Flights_file.close();
}//end try
catch (IOException error)
{
//there was an error on the file writing
System.out.println("Error on file read " + error);
}//error on read
return count;
}//end start_program
int start_program1()
{
String newLine;
try
{
//define a file valuable for Buffered read
BufferedReader Reservation_file = new BufferedReader(new FileReader("reservationx.dat"));
//read lines in file until there are no more lines in the file to read
while ((newLine = Reservation_file.readLine()) != null)
{
//there is a "#" between each data item in each line
StringTokenizer delimiter = new StringTokenizer(newLine,"#");
rcount=rcount+1;
reservation_code[rcount] = Integer.parseInt(delimiter.nextToken());
fl_number[rcount] = Integer.parseInt(delimiter.nextToken());
last_name[rcount] =delimiter.nextToken();
first_name[rcount] =delimiter.nextToken();
seat_type[rcount] =delimiter.nextToken();
seat_cost[rcount] = Double.parseDouble(delimiter.nextToken());
}//while loop
Reservation_file.close();
}//end try
catch (IOException error)
{
//there was an error on the file writing
System.out.println("Error on file read " + error);
}//error on read
return rcount;
}//end start_program1
void flight_report()
{
// DECLARED VARIABLES]
int selection2;
selection2 =modify_flight();
//DO WHILE LOOP
while(selection2!=4)
{
if (selection2 == 1)
{
//put call to add flight
add_flight();
}
else if (selection2 == 2)
{
//put call to delete flight
delete_flight();
}
else if (selection2 == 3)
{
//put call to mod flight
mod_flight();
}
selection2 =modify_flight();
}//END WHILE LOOP
}//method report
int add_flight()
{
//add new flight information
String svalue,Output;
if(count<99){
count=count+1;
Output = "Enter the Flight Company"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
flight[count] = svalue;
Output = "Enter the Flight Number"; //4 digit integer
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
flight_number[count] = Integer.parseInt(svalue);
Output = "Enter the Flight City Origin"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
origin[count] = svalue;
Output = "Enter the Flight City Destination"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
destination[count] = svalue;
Output = "Enter the Flight Date"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
date[count] = svalue;
Output = "Enter the Flight Time"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
time[count] = svalue;
}
return count;
}//method modify_flight
void delete_flight()
{
String output, svalue;
int position=0;
int numFlight = 0;
output="Enter the Flight Number to delete ";
svalue=JOptionPane.showInputDialog(null,output,
"Input Data",JOptionPane.QUESTION_MESSAGE);
if(svalue == null || svalue.length() == 0 ){
numFlight = -1;
}
else{
try{
numFlight=Integer.parseInt(svalue);
}
catch(Exception e){
numFlight = -1;
}
}
if(count>-1 && numFlight > -1){
if(count <99 ){
for(int i=0;i<=count;i++)
{
if(flight_number[i] == numFlight)
position =i;
}
for(int i=position;i<=count;i++)
{
flight_number[i] = flight_number[i+1];
flight[i] = flight[i+1];
origin[i] = origin[i+1];
destination[i] = destination[i+1];
date[i] = date[i+1];
time[i] = time[i+1];
}
}
else{
flight_number[99] = 0;
flight[99] = "";
origin[99] = "";
destination[99] = "";
date[99] = "";
time[99] = "";
}
count-=1;
}
}
void mod_flight()
{
String output,svalue, value;
int position=-1;
int modselect;
int numFlight = 0;
output="Enter the Flight Number to modify ";
svalue=JOptionPane.showInputDialog(null,output,
"Input Data",JOptionPane.QUESTION_MESSAGE);
if(svalue == null || svalue.length() == 0 ){
numFlight = -1;
}
else{
try{
numFlight=Integer.parseInt(svalue);
}
catch(Exception e){
numFlight = -1;
}
}
if(count >-1 && numFlight > -1){
for(int i=0;i<=count;++i)
{
if(flight_number[i] == numFlight)
position =i;
}
if(position>-1){
output="";
output=output+"1. Modify Flight Company "+"\n";
output=output+"2. Modify City Origin "+"\n";
output=output+"3. Modify City Destination "+"\n";
output=output+"4. Modify Flight Date "+"\n";
output=output+"5. Modify Flight Time "+"\n";
output=output+" Please make your selection ";
value=JOptionPane.showInputDialog(null,output,
"Input Data",JOptionPane.QUESTION_MESSAGE);
modselect=Integer.parseInt(value);
if(modselect ==1)
{
output = "Enter the Flight Company";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
flight[position] = svalue;
}
else if(modselect==2)
{
output = "Enter the Flight City Origin";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
origin[position] = svalue;
}
else if(modselect==3)
{
output = "Enter the Flight City Destination";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
destination[position] = svalue;
}
else if(modselect==4)
{
output = "Enter the Flight Date";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
date[position] = svalue;
}
else if(modselect==5)
{
output = "Enter the Flight Time";
svalue =JOptionPane.showInputDialog(null,output,
"",JOptionPane.QUESTION_MESSAGE);
time[position] = svalue;
}
}
}
}
/*int modify_reservation()
{
//add new flight information
String svalue,Output;
rcount=rcount+1;
Output = "Enter the Reservation Code"; //4 digit integer
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
reservation_code[rcount] = Integer.parseInt(svalue);
Output = "Enter the Flight Number"; //4 digit integer
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
fl_number[rcount] = Integer.parseInt(svalue);
Output = "Enter the Last Name"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the First Name"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the Type of Seat"; //string
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
Output = "Enter the Cost of seat"; //double
svalue =JOptionPane.showInputDialog(null,Output,
"",JOptionPane.QUESTION_MESSAGE);
seat_cost[rcount] = Double.parseDouble(svalue);
return rcount;
}*///method modify_reservation
void report()
{
// DECLARED VARIABLES]
int selection3;
selection3 =reportmenu();
//DO WHILE LOOP
while(selection3!=9)
{
if (selection3 == 1)
{
//put call to All Flight Info
display_flight();
}
else if (selection3 == 2)
{
//put call to All Reservation Info
display_reservation();
}
else if (selection3 == 3)
{
//put call to Value of Reservations of a specific type
seat_value();
}
else if (selection3 == 4)
{
//put call to All Reservations on a specific flight
print_flight();
}
else if (selection3 == 5)
{
//put call to All flights from a specific city
city_origin();
}
else if (selection3 == 6)
{
//put call to Specific reservation information
reserve_info();
}
else if (selection3 == 7)
{
//put call to Summary of all flights
all_flights();
}
else if (selection3 == 8)
{
//put call to All flights to a specific city
city_destination();
}
selection3 =reportmenu();
}//END WHILE LOOP
}//method report
void display_flight()
{
int i;
System.out.println("All flight Information:");
for(i=0;i<=count;++i)
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
}
}// method display_flight
void display_reservation()
{
int i;
System.out.println("All Reservations Information:");
for(i=0;i<=rcount;++i)
{
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
}
}// method display_reservation
void seat_value()
{
double total=0;
String search_seat = "";
String output = "Enter the Seat Type you are searching for";
search_seat = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
for (int i = 0; i <=rcount; ++i) {
//CHECK IF coach, first, or business
if(seat_type[i].equals(search_seat))
{
total+=seat_cost[i];
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
}
}
System.out.println("The total for " +search_seat+ " = " +total);
}// method seat_value
void print_flight()
{
int total=0;
int flight_number = -1;
String search_flight = "";
String output = "Enter the Flight Number you are searching for";
search_flight = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
try {
flight_number = Integer.parseInt(search_flight);
} catch (Exception e) {
flight_number = -1;
}
if(flight_number >-1){
for (int i = 0; i <=rcount; ++i) {
//CHECK flight number
if(fl_number[i] == flight_number)
{
total++;
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
}
}
System.out.println("Total of Reservation: "+total);
}
}//method print_flight
void city_origin()
{
String search_city = "";
String output = "Enter the City from a particular flight you are searching for";
int match_count = 0;
search_city = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
System.out.println(" All flights from "+search_city);
for (int i = 0; i <=count; ++i) {
if(origin[i].equals(search_city))
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
for (int j = 0; j <=rcount; ++j)
{
if(flight_number[i] == fl_number[j])
match_count++;
}//j loop
System.out.println("The total reservations for " +flight_number[i]+ " = " +match_count);
}//if match
}
}//method city_origin
void reserve_info()
{
int r_code= -1;
int flightNum = -1;
String search_reservation = "";
String output = "Enter the Reservation Code";
search_reservation = JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
if(search_reservation == null || search_reservation.length() == 0 ){
r_code = -1;
}
else{
try{
r_code=Integer.parseInt(search_reservation);
}
catch(Exception e){
r_code = -1;
}
}
if(r_code > -1){
for (int i = 0; i <=rcount; i++) {
//CHECK reservation code
if(reservation_code[i] == r_code)
{
flightNum = fl_number[i];
System.out.println(reservation_code[i]+" "+fl_number[i]+" "+last_name[i]+" "+first_name[i]+" "+seat_type[i]+" "+seat_cost[i]);
}//if match
}
if(flightNum >-1){
for (int j = 0; j <=count; j++)
{
if( flight_number[j] == flightNum){
//print flight info from that fl_number
System.out.println(flight[j]+" "+flight_number[j]+" "+origin[j]+" "+destination[j]+" "+date[j]+" "+time[j]);
}
}//j loop
}
}
}//method reserve_info
void all_flights ()
{
int i;
System.out.println("All flight Information:");
System.out.println("***********************");
for(i=0;i<=count;++i)
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
System.out.println("All Reservation of this Flight("+flight_number[i]+") : ");
System.out.println("*************************************************************************************");
for(int j=0;j<=rcount;j++)
{
System.out.println(reservation_code[j]+" "+fl_number[j]+" "+last_name[j]+" "+first_name[j]+" "+seat_type[j]+" "+seat_cost[j]);
}
System.out.println("*************************************************************************************");
}
}//method all_flights
void city_destination ()
{
int match_count= 0;
String search_destination= "";
String output = "Enter the City to a particular flight you are searching for";
search_destination= JOptionPane.showInputDialog(null,
output, " ",
JOptionPane.QUESTION_MESSAGE);
System.out.println(" All flights To "+search_destination);
for (int i = 0; i <=count; ++i)
{
if(destination[i].equals(search_destination))
{
System.out.println(flight[i]+" "+flight_number[i]+" "+origin[i]+" "+destination[i]+" "+date[i]+" "+time[i]);
for (int j = 0; j <=rcount; ++j)
{
if(flight_number[i] == fl_number[j])
match_count++;
}//j loop
System.out.println("The total reservations for " +flight_number[i]+ " = " +match_count);
}//if match
}
}//method city_destination*/
void exit_program()
{
String string ;
FileWriter fw = null;
BufferedWriter bw = null;
try {
//System.out.println(count);
fw = new FileWriter(new File("flightsx.dat"),false);
bw = new BufferedWriter(fw);
//String string = "";
for(int i =0;i<=count;i++){
string =flight[i]+"#"+flight_number[i]+"#"+origin[i]+"#"+destination[i]+"#"+date[i]+"#"+time[i]+"\n";
//System.out.println(string);
bw.write(string);
}
bw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("Executing exit_program");
}//method exit_program
}//END OF CLASS