我不尝试用YYYY-MM-DD或dd / MM / YYYY格式化日期。我在问
LocalDate的字面格式。

我刚开始学习Java，并且正在使用称为BlueJ的IDE。我想
创建一个测试方法。

屏幕截图将显示我正在尝试做的事情 忽略底部的错误部分

现在，从构造函数开始，我们知道它需要一个int，LocalDate和一个
double。我在网上搜索后发现

https://www.javabrahman.com/java-8/java-8-working-with-localdate-localtime- localdatetime-tutorial-with-examples /

java.time.LocalDate：
在ISO- 86011日历系统中，LocalDate实例保存一个不带时区的日期。LocalDate具有默认格式’YYYY-MM-DD’，
如‘2016-12-12’中一样。

因此，我将一个普通数字放在10001中作为testID，并将double
变成50.5之类的东西，我也知道要注册一个字符串（如果
需要），我需要将其括在“字符串”中

但是我已经尝试了各种方式输入日期，但我会遇到一个
错误

2018-05-30,30-05-2018,30 / 05/2018将给我

Error: incompatible types: Int cannot be converted to java.time.LocalDate

“30/05/2018” on the other hand would give me

Error: Incompatible types: java.lang.String cannot be converted to java.time.LocalDate

If I try 30.05.2018 it would say

Error: ';' expected

If I try ‘2018-05-30’ it would say

Error: unclosed character literal

我没有办法尝试。因此，如果您能告诉我如何将其放入
其中，那就太好了。

我只是真的需要知道BlueJ如何让我输入它。因为
BlueJ的资源在线如此稀疏。

Code:

import java.time.LocalDate;
import java.util.ArrayList;
/**
 * Write a description of class TestPaper here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class TestPaper
{
    // instance variables - replace the example below with your own
    private int testID;
    private LocalDate testDate;
    private double testMarks;
    private ArrayList<MCQ> MCQDetails;

    /**
     * Constructor for objects of class TestPaper
     */
    public TestPaper(int testID, LocalDate testDate, double testMarks)
    {
        this.testID = testID;
        this.testDate = testDate;
        this.testMarks = testMarks;
        MCQDetails = new ArrayList<MCQ>() ; 
    }

/**
 * Accessor Method getTestID to get the testID
 *
 * @return int value of the choice ID
 */
public int getTestID(){
    return testID;
}

/**
 * Mutator Method to set the testID
 * 
 *  @param int format of the testID to set
 */
public void setTestID(int testID){
    this.testID = testID;
}

/**
 * Accessor Method getTestMarks to get the Test Marks
 *
 * @return double value of the test marks 
 */
public double getTestMarks(){
    return testMarks;
}

/**
 * Mutator Method to set the testMarks
 * 
 *  @param String format of the choice Description to be set
 */
public void setTestMarks(double testMarks){
    this.testMarks = testMarks;
}

    /**
 * Accessor Method getTestDate to get the testDate
 *
 * @return LocalDate value of the testDate
 */
public LocalDate getTestDate(){
    return testDate;
}

/**
 * Mutator Method to set the testDate
 * 
 *  @param LocalDate format of the testDate to set
 */
public void setTestDate(LocalDate testDate){
    this.testDate = testDate;
}

/**
 * Method addMCQ will allow users to add a MCQ Object to the list of MCQ
 *
 * @param addMCQ a MCQ Object
 * @return boolean will return true if it is successfully added or false if not
 */
public boolean addMCQ(MCQ MCQName)
{
    return MCQDetails.add(MCQName);
}

/**
 * Method removeMCQ to remove an MCQ object from the Arraylist
 *
 * @param MCQName A parameter of type MCQ 
 */
public void removeMCQ(MCQ MCQName)
{
    MCQDetails.remove(MCQName);
}

/**
 * Method listMCQ to return a list of MCQ arraylist
 *
 * @return The return value of MCQDetails (MCQ Arraylist)
 */
public ArrayList<MCQ> listMCQ()
{
    return MCQDetails;
}

    public MCQ findMCQ(int MCQID)
{
    for(MCQ m : MCQDetails)
    {
        if(m.getQuestionID() == MCQID)
        {
            return m;
        }
    }
    return null;
}