Jetbrains Academy Java:程序输入不足。你试着读得比预期的多

Jetbrains Academy Java“Project:Cinema Room Manager”在4/5阶段抛出了一个不清楚的错误

程序输入不足。您试图阅读的内容超出了预期….

。Java堆栈跟踪是：

at org.hyperskill.hstest.stage.StageTest.start(StageTest.java:131)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
    at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
    at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
    at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
    at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
    at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
    at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:119)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
    at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:182)
    at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:164)
    at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:414)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
    at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
    at java.base/java.lang.Thread.run(Thread.java:834)

源代码 SeatPlanning.java

package cinema;

import java.util.Scanner;

public class SeatPlanning {
    private int rows;
    private int seatsPerRow;

    private String[][] seats;

    private final Scanner s;

    public SeatPlanning() {
        s = new Scanner(System.in);
    }

    public int getTicketPrice(int row) {
        int totalSeats = rows * seatsPerRow;
        if (totalSeats <= 60) {
            return 10;
        } else {
            int frontRows = (int) Math.floor((double) rows / 2);
            return (row <= frontRows) ? 10 : 8;
        }
    }

    public void printTicketPrice(int row) {
        System.out.printf("Ticket price: $%d\n", getTicketPrice(row));
    }

    private void printInputRequest(String str) {
        System.out.printf("%s\n", str);
        System.out.print("> ");
    }

    public void launch() {
        printInputRequest("Enter the number of rows:");
        rows = s.nextInt();
        printInputRequest("Enter the number of seats in each row:");
        seatsPerRow = s.nextInt();
        initSeats();
        printMenu();
    }

    private void initSeats() {
        this.seats = new String[rows][seatsPerRow];
        for (int row = 0; row < rows; row++) {
            for (int column = 0; column < seatsPerRow; column++) {
                this.seats[row][column] = " S";
            }
        }
    }

    public void printSeats() {
        System.out.print("\nCinema:\n ");
        for (int column = 0; column < seatsPerRow; column++) {
            System.out.printf(" %d", column + 1);
        }
        System.out.print("\n");

        for (int row = 0; row < rows; row++) {
            System.out.printf("%d", row + 1);
            for (int column = 0; column < seatsPerRow; column++) {
                System.out.print(seats[row][column]);
            }
            System.out.print("\n");
        }
    }

    private void buySeat(int row, int column) {
        this.seats[row - 1][column - 1] = " B";
        printTicketPrice(row);
    }


    public void startBuySeatDialog() {
        printInputRequest("Enter a row number:");
        int row = s.nextInt();
        printInputRequest("Enter a seat number in that row:");
        int column = s.nextInt();
        buySeat(row, column);
    }


    public void printMenu() {
        printInputRequest("\n1. Show the seats\n" +
                "2. Buy a ticket\n" +
                "0. Exit");
        evaluateMenuOption(s.nextInt());

    }

    private void evaluateMenuOption(int option) {
        switch (option) {
            case 0:
                System.exit(0);
            case 1:
                this.printSeats();
                this.printMenu();
                break;
            case 2:
                this.startBuySeatDialog();
                this.printMenu();

        }
    }
}

---

您可能使用了

System.exit（0）

退出了导致问题的应用程序。

---

相反，请使用

return

退出应用程序。

您能分享您的代码吗？这是您问题的答案吗？如果没有，请避免将评论作为答案。是的，我使用了“回答你自己的问题”功能。我在hyperskill评论中找到了答案，因此我希望将来能更公开地与所有谷歌用户分享答案

package cinema;

public class Cinema {

    public static void main(String[] args) {

        SeatPlanning seatPlanning = new SeatPlanning();
        seatPlanning.launch();
    }
}