我有一个我在Eclipse中创建的程序，它有一个控制台菜单（只是纯文本）并使用Scanner接受用户输入。我需要使其自动化，以便我可以通过以下方式从命令行运行程序：java MyProgramName＆lt; input.txt＆gt; output.txt的
我尝试将以下内容放在我的主要内容中：
try {
System.setIn(new FileInputStream("input.txt"));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
System.out.println("input.txt does not exist!");
e.printStackTrace();
}
但我得到以下例外：
Exception in thread "main" java.util.NoSuchElementException: No line found
at java.util.Scanner.nextLine(Scanner.java:1585)
有人知道这里有什么问题吗？
编辑：值得注意的是，我的程序有3个类，所有3个都使用Scanner实例。
这是我的半功能计划：
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Scanner;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.Map.Entry;
enum MONTHS
{
January, February, March, April, May, June, July, August, September, October, November, December;
}
enum DAYS
{
Su, Mo, Tu, We, Th, Fr, Sa;
}
public class MyCalendarTester implements java.io.Serializable {
static MONTHS[] arrayOfMonths = MONTHS.values();
static DAYS[] arrayOfDays = DAYS.values();
static MyCalendar myCal = new MyCalendar();
static Event myEvent = new Event(null, null, null);
public static void main(String[] args) {
// TODO Auto-generated method stub
// try {
// System.setIn(new FileInputStream("input.txt"));
// } catch (FileNotFoundException e) {
// // TODO Auto-generated catch block
// System.out.println("input.txt does not exist!");
// e.printStackTrace();
// }
Scanner in = null;
try {
in = new Scanner(new File("input.txt"));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
GregorianCalendar cal = new GregorianCalendar(); // capture today
printCalendar(cal);
menuHandler(in);
System.out.println("\nI think we're done here!");
}
public static void printCalendar(Calendar cal){
GregorianCalendar dayCounter = new GregorianCalendar(); // capture today
dayCounter.set(Calendar.DAY_OF_MONTH, 1);
int formatCounter = 0;
System.out.println(" " + arrayOfMonths[cal.get(Calendar.MONTH) ] + " " + cal.get(Calendar.YEAR)); //prints the month and year
for(int i = 0; i < arrayOfDays.length; i++){
if(i == 0){
System.out.print(arrayOfDays[i]);
}
else{
System.out.print(" " + arrayOfDays[i]);
}
}//print days of week
System.out.println();
for(int i = 0; i < arrayOfDays.length; i++){
if(!arrayOfDays[i].equals(arrayOfDays[dayCounter.get(Calendar.DAY_OF_WEEK) - 1])){
System.out.print(" ");
formatCounter++;
}
else{
System.out.print(" " + cal.getActualMinimum(Calendar.DAY_OF_MONTH) + " ");
formatCounter++;
break;
}
}
for(int i = 1; i < cal.getMaximum(Calendar.DAY_OF_MONTH); i++){
if(formatCounter == 7){
System.out.println();
formatCounter = 0; //reset counter
}
dayCounter.roll(Calendar.DAY_OF_MONTH, true);
if(dayCounter.get(Calendar.DATE) == cal.get(Calendar.DATE)){
System.out.print("[" + dayCounter.get(Calendar.DATE) + "]");
formatCounter++;
}
else if(dayCounter.get(Calendar.DATE) <= 9){
System.out.print(" " + dayCounter.get(Calendar.DATE) + " ");
formatCounter++;
}
else{
System.out.print(dayCounter.get(Calendar.DATE) + " ");
formatCounter++;
}
}
}
public static void menuHandler(Scanner in){
System.out.println("\nSelect one of the following options:");
System.out.println("[L]oad [V]iew by [C]reate [G]o to [E]vent list [D]elete [Q]uit");
char userChoice = in.next().charAt(0);
switch(Character.toUpperCase(userChoice)){
case 'L':
MyCalendar.load();
menuHandler(in);
break;
case 'V':
myCal.viewCalendar(in);
menuHandler(in);
break;
case 'C':
myEvent.createEvent(in);
menuHandler(in);
break;
case 'G':
myCal.goTo(in);
menuHandler(in);
break;
case 'E':
myEvent.eventList(in);
menuHandler(in);
break;
case 'D':
myEvent.deleteEvent(in);
menuHandler(in);
break;
case 'Q': MyCalendar.save();
break;
}
return;
}
}
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.Scanner;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.Map.Entry;
public class MyCalendar implements java.io.Serializable{
GregorianCalendar calendar;
private static HashMap<GregorianCalendar, Event> myCalHash;
GregorianCalendar dayCounter = new GregorianCalendar(); // capture today
static MONTHS[] arrayOfMonths = MONTHS.values();
static DAYS[] arrayOfDays = DAYS.values();
MyCalendar(){
calendar = new GregorianCalendar();
myCalHash = new HashMap<GregorianCalendar, Event>();
}
public HashMap<GregorianCalendar, Event> getMyCalHash(){
return myCalHash;
}
public void setMyCalHash(HashMap<GregorianCalendar, Event> myCalHash) {
this.myCalHash = myCalHash;
}
public void viewCalendar(Scanner in) {
System.out.print("[D]ay view or [M]view? ");
char userChoice = in.next().charAt(0);
if(Character.toUpperCase(userChoice) == 'D'){ dayView(in); }
else if(Character.toUpperCase(userChoice) == 'M'){ monthView(in); }
else{
System.out.println("Invalid choice.");
}
}
public void dayView(Scanner in){
//print day calendar
try {
System.setIn(new FileInputStream("input.txt"));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
System.out.println("input.txt does not exist!");
e.printStackTrace();
}
ArrayList<Event> tempArr = new ArrayList<Event>();
System.out.println(arrayOfDays[calendar.get(Calendar.DAY_OF_WEEK) - 1] + ", " + arrayOfMonths[calendar.get(Calendar.MONTH)]
+ " " + calendar.get(Calendar.DATE) + ", " + calendar.get(Calendar.YEAR));
for (Entry<GregorianCalendar, Event> entry : MyCalendarTester.myCal.getMyCalHash().entrySet()) {
if(entry.getKey().get(Calendar.MONTH) == (calendar.get(Calendar.MONTH) + 1)
&& entry.getKey().get(Calendar.DATE) == calendar.get(Calendar.DATE)
&& entry.getKey().get(Calendar.YEAR) == calendar.get(Calendar.YEAR)){
tempArr.add(entry.getValue());
}
}
if(tempArr.size() > 0){
Collections.sort(tempArr);
}
for(Event e: tempArr){
if(e.endTime != null){
System.out.println(" " + e.eventName + " " + e.startTime.get(Calendar.HOUR_OF_DAY) + ":" +
e.startTime.get(Calendar.MINUTE) + " " + e.endTime.get(Calendar.HOUR_OF_DAY)
+ ":" + e.endTime.get(Calendar.MINUTE));
}
else{
System.out.println(e.eventName + " " + e.startTime.get(Calendar.HOUR_OF_DAY) + ":" +
e.startTime.get(Calendar.MINUTE));
}
}
System.out.print("[P]revious or [N]ext or [M]ain menu ? ");
char userChoice = in.next().charAt(0);
if(Character.toUpperCase(userChoice) == 'P'){
calendar.add(Calendar.DAY_OF_MONTH, -1);
dayView(in);
}
else if(Character.toUpperCase(userChoice) == 'N'){
calendar.add(Calendar.DAY_OF_MONTH, 1);
dayView(in);
}
else if(Character.toUpperCase(userChoice) == 'M'){
return;
}
else{
System.out.println("Invalid choice.");
return;
}
}
public void monthView(Scanner in){
//print month calendar
int formatCounter = 0;
boolean eventDay = false;
dayCounter.set(Calendar.DAY_OF_MONTH, 1);
System.out.println(" " + arrayOfMonths[calendar.get(Calendar.MONTH) ] + " " + calendar.get(Calendar.YEAR)); //prints the month and year
for(int i = 0; i < arrayOfDays.length; i++){
if(i == 0){
System.out.print(arrayOfDays[i]);
}
else{
System.out.print(" " + arrayOfDays[i]);
}
}//print days of week
System.out.println();
for(int i = 0; i < arrayOfDays.length; i++){
if(!arrayOfDays[i].equals(arrayOfDays[dayCounter.get(Calendar.DAY_OF_WEEK) - 1])){
System.out.print(" ");
formatCounter++;
}
else{
for (Entry<GregorianCalendar, Event> entry : MyCalendarTester.myCal.getMyCalHash().entrySet()) {
// System.out.println("entry.getKey().get(Calendar.MONTH) = " + (entry.getKey().get(Calendar.MONTH)) );
// System.out.println(" (dayCounter.get(Calendar.MONTH) + 1) = " + (dayCounter.get(Calendar.MONTH) + 1) );
// System.out.println("entry.getKey().get(Calendar.DATE) = " + entry.getKey().get(Calendar.DATE));
// System.out.println("(dayCounter.get(Calendar.DATE) = " + (dayCounter.get(Calendar.DATE)));
if(entry.getKey().get(Calendar.MONTH) == (dayCounter.get(Calendar.MONTH) + 1)
&& entry.getKey().get(Calendar.DATE) == (dayCounter.get(Calendar.DATE))
&& entry.getKey().get(Calendar.YEAR) == dayCounter.get(Calendar.YEAR)){
System.out.print("[" + calendar.getActualMinimum(Calendar.DAY_OF_MONTH) + "]");
formatCounter++;
eventDay = true;
break;
}
}
if(!eventDay){
System.out.print(" " + calendar.getActualMinimum(Calendar.DAY_OF_MONTH) + " ");
formatCounter++;
break;
}
break;
}
}
for(int i = 1; i < dayCounter.getActualMaximum(Calendar.DAY_OF_MONTH); i++){
if(formatCounter == 7){
System.out.println();
formatCounter = 0; //reset counter
}
eventDay = false;
dayCounter.roll(Calendar.DAY_OF_MONTH, true);
for (Entry<GregorianCalendar, Event> entry : MyCalendarTester.myCal.getMyCalHash().entrySet()) {
if(entry.getKey().get(Calendar.MONTH) == (dayCounter.get(Calendar.MONTH) + 1)
&& entry.getKey().get(Calendar.DATE) == (dayCounter.get(Calendar.DATE))
&& entry.getKey().get(Calendar.YEAR) == dayCounter.get(Calendar.YEAR)){
System.out.print("[" + dayCounter.get(Calendar.DATE) + "]");
formatCounter++;
eventDay = true;
break;
}
}
if(!eventDay){
if(dayCounter.get(Calendar.DATE) <= 9){
System.out.print(" " + dayCounter.get(Calendar.DATE) + " ");
formatCounter++;
}
else{
System.out.print(dayCounter.get(Calendar.DATE) + " ");
formatCounter++;
}
}
}
System.out.print("\n[P]revious or [N]ext or [M]ain menu ? ");
char userChoice = in.next().charAt(0);
if(Character.toUpperCase(userChoice) == 'P'){
calendar.add(Calendar.MONTH, -1);
dayCounter.add(Calendar.MONTH, -1);
monthView(in);
}
else if(Character.toUpperCase(userChoice) == 'N'){
calendar.add(Calendar.MONTH, 1);
dayCounter.add(Calendar.MONTH, 1);
monthView(in);
}
else if(Character.toUpperCase(userChoice) == 'M'){
calendar = (GregorianCalendar) Calendar.getInstance(); //resets the calendar back to the current month
dayCounter = (GregorianCalendar) Calendar.getInstance(); //resets the calendar back to the current month
return;
}
else{
System.out.println("Invalid choice.");
return;
}
}
public void goTo(Scanner in){
System.out.print("Enter a date in MM/DD/YYYY format: ");
String userDate = in.nextLine();
String[] dateArr = userDate.split("/");
dayCounter.set(GregorianCalendar.YEAR, Integer.parseInt(dateArr[2]));
dayCounter.set(GregorianCalendar.MONTH, Integer.parseInt(dateArr[0]) - 1);
dayCounter.set(GregorianCalendar.DATE, Integer.parseInt(dateArr[1]));
System.out.println(arrayOfDays[dayCounter.get(Calendar.DAY_OF_WEEK) - 1] + ", " +
arrayOfMonths[dayCounter.get(Calendar.MONTH)] + " " + dayCounter.get(Calendar.DATE) + ", " + dayCounter.get(Calendar.YEAR));
for (Entry<GregorianCalendar, Event> entry : MyCalendarTester.myCal.getMyCalHash().entrySet()) {
if(entry.getKey().get(Calendar.MONTH) == Integer.parseInt(dateArr[0])
&& entry.getKey().get(Calendar.DATE) == Integer.parseInt(dateArr[1])
&& entry.getKey().get(Calendar.YEAR) == Integer.parseInt(dateArr[2]) ){
Event value = entry.getValue();
if(value.endTime != null){
System.out.println(value.eventName + " " + value.startTime.get(Calendar.HOUR_OF_DAY) + ":" +
value.startTime.get(Calendar.MINUTE) + " " + value.endTime.get(Calendar.HOUR_OF_DAY)
+ ":" + value.endTime.get(Calendar.MINUTE));
}else{
System.out.println(value.eventName + " " + value.startTime.get(Calendar.HOUR_OF_DAY) + ":" +
value.startTime.get(Calendar.MINUTE));
}
}
}
}
public static void save(){
SortedSet<GregorianCalendar> keys = new TreeSet<GregorianCalendar>(MyCalendarTester.myCal.getMyCalHash().keySet());
try
{
FileOutputStream fileOut = new FileOutputStream("events.txt");
ObjectOutputStream out = new ObjectOutputStream(fileOut);
out.writeObject(myCalHash);
out.close();
fileOut.close();
System.out.printf("Serialized data is saved in events.txt");
}catch(IOException i)
{
i.printStackTrace();
}
}
public static void load(){
try
{
FileInputStream fileIn = new FileInputStream("events.txt");
ObjectInputStream in = new ObjectInputStream(fileIn);
myCalHash = (HashMap<GregorianCalendar, Event>) in.readObject();
in.close();
fileIn.close();
}catch(IOException i)
{
System.out.println("File not found. You must be running the program for the first time.");
return;
}catch(ClassNotFoundException c)
{
System.out.println("Employee class not found");
c.printStackTrace();
return;
}
}
}
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Scanner;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;
import javax.xml.soap.Node;
public class Event implements Comparable, java.io.Serializable {
String eventName;
GregorianCalendar startTime;
GregorianCalendar endTime;
MyCalendarTester mCal = new MyCalendarTester();
Event(String eventName, GregorianCalendar startTime, GregorianCalendar endTime){
this.eventName = eventName;
this.startTime = startTime;
this.endTime = endTime;
} //end Event Constructor
public GregorianCalendar getStartTime(){
return startTime;
}
public void createEvent(Scanner in){
// Scanner sc = new Scanner(System.in);
System.out.print("Enter the name of the event: ");
String name = in.nextLine();
System.out.print("Date of event: ");
String dateAsString = in.nextLine();
System.out.println("dateASString = " + dateAsString);
String startTime = null;
String endTime = null;
GregorianCalendar calDate = new GregorianCalendar();
String[] dateArr = dateAsString.split("/");
calDate.set(GregorianCalendar.YEAR, Integer.parseInt(dateArr[2]));
calDate.set(GregorianCalendar.MONTH, Integer.parseInt(dateArr[0]));
calDate.set(GregorianCalendar.DATE, Integer.parseInt(dateArr[1]));
System.out.print("Enter starting time and ending time(24 hour format, comma separated):");
String times = in.nextLine();
// checks if user entered both start and end time
if(times.contains(",")){
String[] time = times.split(",");
startTime = time[0];
endTime = time[1];
GregorianCalendar calSTime = new GregorianCalendar();
String[] sTime = startTime.split(":");
calSTime.set(Calendar.HOUR_OF_DAY, Integer.parseInt(sTime[0]));
calSTime.set(Calendar.MINUTE, Integer.parseInt(sTime[1]));
GregorianCalendar calETime = new GregorianCalendar();
String[] eTime = endTime.split(":");
calETime.set(Calendar.HOUR_OF_DAY, Integer.parseInt(eTime[0]));
calETime.set(Calendar.MINUTE, Integer.parseInt(eTime[1]));
Event myEvent = new Event(name, calSTime, calETime);
MyCalendarTester.myCal.getMyCalHash().put(calDate, myEvent); //adding date and event to HashMap
}else{ //if user did not specify an event end time
startTime = times;
endTime = null;
GregorianCalendar calSTime = new GregorianCalendar();
String[] sTime = startTime.split(":");
calSTime.set(Calendar.HOUR_OF_DAY, Integer.parseInt(sTime[0]));
calSTime.set(Calendar.MINUTE, Integer.parseInt(sTime[1]));
Event myEvent = new Event(name, calSTime, null);
MyCalendarTester.myCal.getMyCalHash().put(calDate, myEvent);//adding date and event to HashMap
}
}
public void deleteEvent(Scanner in){
//Scanner sc = new Scanner(System.in);
System.out.println("[S]elected or [A]ll ?");
char userChoice = in.next().charAt(0);
if(Character.toUpperCase(userChoice) == 'S'){
//delete all events on the day
System.out.println("Enter the date: ");
String deleteDate = in.nextLine();
String[] parsed = deleteDate.split("/");
System.out.println("MyCalendarTester.myCal.getMyCalHash().size() = " + MyCalendarTester.myCal.getMyCalHash().size());
SortedSet<GregorianCalendar> keys = new TreeSet<GregorianCalendar>(MyCalendarTester.myCal.getMyCalHash().keySet());
for (GregorianCalendar entry : keys) {
GregorianCalendar copyEntry = entry;
if(entry.get(Calendar.MONTH) == Integer.parseInt(parsed[0])
&& entry.get(Calendar.DATE) == Integer.parseInt(parsed[1])
&& entry.get(Calendar.YEAR) == Integer.parseInt(parsed[2]) ){
MyCalendarTester.myCal.getMyCalHash().remove(copyEntry);
}
}
}
else if(Character.toUpperCase(userChoice) == 'A'){
MyCalendarTester.myCal.getMyCalHash().clear();
}
else{
System.out.println("Invalid choice.");
}
}
public void eventList(Scanner in){
int year = -1;
GregorianCalendar tempKey = null;
if(MyCalendarTester.myCal.getMyCalHash().equals(null)){
System.out.println("Your calendar is empty!");
}
else{
System.out.println("Here are your events: ");
SortedSet<GregorianCalendar> keys = new TreeSet<GregorianCalendar>(MyCalendarTester.myCal.getMyCalHash().keySet());
Set<Entry<GregorianCalendar, Event>> map = (MyCalendarTester.myCal.getMyCalHash().entrySet());
List<Map.Entry> list = new LinkedList<Map.Entry>(map);
// Collections.sort(list, new Comparator<Map.Entry<GregorianCalendar, Event>>() {
// public int compare(Map.Entry<GregorianCalendar, Event> e1, Map.Entry<GregorianCalendar,Event> e2) {
//
// return ( e1.getValue()).compareTo(e2.getValue());
//
// }
// });
// Iterator i2 = list.iterator();
// while (i2.hasNext()) {
// System.out.print(i2.next() + " , ");
// }
//
for(GregorianCalendar key : keys){
Event value = MyCalendarTester.myCal.getMyCalHash().get(key);
tempKey = key;
if(value.endTime != null){
if(key.get(Calendar.YEAR) == year){
System.out.println(MyCalendarTester.arrayOfDays[key.get(Calendar.DAY_OF_WEEK) - 1] + ", " + MyCalendarTester.arrayOfMonths[key.get(Calendar.MONTH) - 1] + " "
+ key.get(Calendar.DATE) + " " + value.startTime.get(Calendar.HOUR_OF_DAY) + ":" + value.startTime.get(Calendar.MINUTE) + " - " + value.endTime.get(Calendar.HOUR_OF_DAY)
+ ":" + value.endTime.get(Calendar.MINUTE) + " " + value.eventName);
}else{
System.out.println(key.get(Calendar.YEAR));
System.out.println(MyCalendarTester.arrayOfDays[key.get(Calendar.DAY_OF_WEEK) - 1] + ", " + MyCalendarTester.arrayOfMonths[key.get(Calendar.MONTH) - 1] + " "
+ key.get(Calendar.DATE) + " " + value.startTime.get(Calendar.HOUR_OF_DAY) + ":" + value.startTime.get(Calendar.MINUTE) + " - " + value.endTime.get(Calendar.HOUR_OF_DAY)
+ ":" + value.endTime.get(Calendar.MINUTE) + " " + value.eventName );
year = key.get(Calendar.YEAR);
}
}else{
if(key.get(Calendar.YEAR) == year){
System.out.println(MyCalendarTester.arrayOfDays[key.get(Calendar.DAY_OF_WEEK) - 1] + ", " + MyCalendarTester.arrayOfMonths[key.get(Calendar.MONTH) - 1] + " "
+ key.get(Calendar.DATE) + " " + value.startTime.get(Calendar.HOUR_OF_DAY) + ":" + value.startTime.get(Calendar.MINUTE) + " " + value.eventName);
}else{
System.out.println(key.get(Calendar.YEAR));
System.out.println(MyCalendarTester.arrayOfDays[key.get(Calendar.DAY_OF_WEEK) - 1] + ", " + MyCalendarTester.arrayOfMonths[key.get(Calendar.MONTH) - 1] + " "
+ key.get(Calendar.DATE) + " " + value.startTime.get(Calendar.HOUR_OF_DAY) + ":" + value.startTime.get(Calendar.MINUTE) + " " + value.eventName);
System.out.println();
year = key.get(Calendar.YEAR);
}
}
}
}
}
@Override
public int compareTo(Object e) {
// TODO Auto-generated method stub
if(((Event) e).mCal.myCal.getMyCalHash().get(Calendar.MONTH) == (this.mCal.myCal.getMyCalHash().get(Calendar.MONTH))
&& ((Event) e).mCal.myCal.getMyCalHash().get(Calendar.DATE) == (this.mCal.myCal.getMyCalHash().get(Calendar.DATE))
&& ((Event) e).mCal.myCal.getMyCalHash().get(Calendar.YEAR) == (this.mCal.myCal.getMyCalHash().get(Calendar.YEAR))){
int hour = ((Event) e).getStartTime().get(Calendar.HOUR_OF_DAY);
int minute = ((Event) e).getStartTime().get(Calendar.MINUTE);
int anotherHour = this.startTime.get(Calendar.HOUR_OF_DAY);
int anotherMinute = this.startTime.get(Calendar.MINUTE);
if(anotherHour - hour == 0 ){
return anotherMinute - minute;
}else{
return anotherHour - hour;
}
}
return 0;
}
}
//
//static <GregorianCalendar,Event extends Comparable<? super Event>>
//List<Entry<GregorianCalendar, Event>> entriesSortedByValues(Map<GregorianCalendar,Event> map) {
//
//List<Entry<GregorianCalendar,Event>> sortedEntries = new ArrayList<Entry<GregorianCalendar,Event>>(map.entrySet());
//
//Collections.sort(sortedEntries,
//new Comparator<Entry<GregorianCalendar,Event>>() {
// @Override
// public int compare(Entry<GregorianCalendar,Event> e1, Entry<GregorianCalendar,Event> e2) {
// return e2.getValue().compareTo(e1.getValue());
// }
//}
//);
//
//return sortedEntries;
//}
//
//}
答案 0 :(得分：0)
继续使用Scanner但使用此构造函数
Scanner in = new Scanner(new File("input.txt"));