这是我想要放到另一个数组的array。
String [][]roomType = new String[4][4];
roomType[0][0] = "Standard";
roomType[0][1] = "500";
roomType[0][2] = "5";
roomType[0][3] = "1";
roomType[1][0] = "Double";
roomType[1][1] = "800";
roomType[1][2] = "4";
roomType[1][3] = "2";
roomType[2][0] = "Matrimonial";
roomType[2][1] = "3500";
roomType[2][2] = "6";
roomType[2][3] = "3";
roomType[3][0] = "Triple";
roomType[3][1] = "4500";
roomType[3][2] = "5";
roomType[3][3] = "4";
/*-----------------------------------------------------------------
* Costumer's Information
-----------------------------------------------------------------*/
do{//Start Of First Loop - Customer's Info
System.out.print("\nEnter Number Of Records : ");
int Records = Integer.parseInt(br.readLine());
String [][] customer = new String [Records][7]; //records for customer
for (int x = 0; x < Records; x++){ // Start For Records
System.out.print("\nConfimation Number: ");
customer[x][0] = br.readLine();
System.out.print("\nFirst Name: ");
customer[x][1] = br.readLine();
System.out.print("Last Name: ");
customer[x][2] = br.readLine();
System.out.print("Guest: ");
customer[x][3] = br.readLine();
System.out.print("Night: ");
customer[x][4] = br.readLine();
System.out.println();
System.out.print("1. Standard..............................................P500.00\n");
System.out.print("2. Double................................................P800.00\n");
System.out.print("3. Matrimonial...........................................P3,500.00\n");
System.out.print("4. Triple................................................P4,500.00 \n");
System.out.print("\n\nPlease Select Room Type: ");
int SwitchOne = Integer.parseInt(br.readLine());
int two = SwitchOne;
switch(SwitchOne){
case 1:
case 2:
case 3:
case 4:
这是将数组放到另一个数组或从数组赋值给数组的过程。
for(int row=SwitchOne-1;row<4;row++){
int roomID = Integer.parseInt(roomType[row][3]);
if(two == roomID){
double price = Double.parseDouble(roomType[row][1]);
int available = Integer.parseInt(roomType[row][2]);
available -= 1;
String avail = Double.toString(available);
roomType[row][2] = avail;
customer[x][5] = roomType[row][0];
double guest = Double.parseDouble(customer[x][3]);
guest *= GuestRate;
double night = Double.parseDouble(customer[x][4]);
price *= night;
double totalAmount = guest + price;
String AmountTotal = Double.toString(totalAmount);
customer[x][6] = AmountTotal;
}
}
问题是当第一个已放置的数组无法再次使用时。编译器说它OutOfBounds。
所以我不能选择以前选择的东西。
我是Java课程的新手，请给我一些帮助。
这只是1个方法类。 我无法理解2种或更多种方法。
如果您不理解，请发表评论，这太难以解释。
答案 0 :(得分：0)
如果要将两个维度数组从一个维度分配给另一个维度。
请按照以下代码段
进行操作String[][] newArray = new String[roomType[0].length][roomType[1].length];
for (int i = 0; i < roomType[0].length; i++){
for (int j = 0; j < roomType[1].length; j++){
newArray[i][j] = roomType[i][j];
}
}
如果你想要交叉检查，试试这个，无论数组是否正确分配，请尝试下面的
for (int i = 0; i < newArray[0].length; i++){
for (int j = 0; j < newArray[1].length; j++){
System.out.print(newArray[i][j] + " ");
}
System.out.println("");
}
答案 1 :(得分：0)
试试这个，
import java.io.*;
public class ArrayTest {
public static void main(String args[]) throws NumberFormatException,
IOException {
double GuestRate = 100;
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String[][] roomType = new String[4][4];
roomType[0][0] = "Standard";
roomType[0][1] = "500";
roomType[0][2] = "5";
roomType[0][3] = "1";
roomType[1][0] = "Double";
roomType[1][1] = "800";
roomType[1][2] = "4";
roomType[1][3] = "2";
roomType[2][0] = "Matrimonial";
roomType[2][1] = "3500";
roomType[2][2] = "6";
roomType[2][3] = "3";
roomType[3][0] = "Triple";
roomType[3][1] = "4500";
roomType[3][2] = "5";
roomType[3][3] = "4";
/*-----------------------------------------------------------------
* Costumer's Information
-----------------------------------------------------------------*/
// Start Of First Loop - Customer's Info
System.out.print("\nEnter Number Of Records : ");
int Records = Integer.parseInt(br.readLine());
String[][] customer = new String[Records][7]; // records for customer
int available;
for (int x = 0; x < Records; x++) { // Start For Records
System.out.print("\nConfimation Number: ");
customer[x][0] = br.readLine();
System.out.print("\nFirst Name: ");
customer[x][1] = br.readLine();
System.out.print("Last Name: ");
customer[x][2] = br.readLine();
System.out.print("Guest: ");
customer[x][3] = br.readLine();
System.out.print("Night: ");
customer[x][4] = br.readLine();
System.out.println();
System.out
.print("1. Standard..............................................P500.00\n");
System.out
.print("2. Double................................................P800.00\n");
System.out
.print("3. Matrimonial...........................................P3,500.00\n");
System.out
.print("4. Triple................................................P4,500.00 \n");
System.out.print("\n\nPlease Select Room Type: ");
int SwitchOne = Integer.parseInt(br.readLine());
int two = SwitchOne;
int row = SwitchOne - 1;
int roomID = Integer.parseInt(roomType[row][3]);
if (two == roomID) {
double price = Double.parseDouble(roomType[row][1]);
available = Integer.parseInt(roomType[row][2]);
if( Integer.parseInt(roomType[row][2]) >= Integer.parseInt(customer[x][3]))
{
available = available-Integer.parseInt(customer[x][3]);
String avail = Integer.toString(available);
roomType[row][2] = avail;
customer[x][5] = roomType[row][0];
double night = Double.parseDouble(customer[x][4]);
double guest = Double.parseDouble(customer[x][3]);
guest *= GuestRate * night;
price *= night;
double totalAmount = guest + price;
String AmountTotal = Double.toString(totalAmount);
customer[x][6] = AmountTotal;
System.out.println(customer[x][6]);
}
else
System.out.println("Room is not available for "+ customer[x][3]+ " Guests : We have only "+available+ " vacancy in that room");
}
}
}
}
它正在工作..输出是，
输入记录数：3
Confimation Number：1
名字：f 姓氏：g 嘉宾：2 晚上：2
请选择房间类型：1 五 1400.0
Confimation Number：2
名字：e 姓氏：r 嘉宾：2 晚上：2
请选择房间类型：1 3 1400.0
Confimation Number：3
名字：d 姓氏：g 嘉宾：2 晚上：2
请选择房间类型：1 1 客房不适合2位客人入住：该客房仅有1个空位