问题描述 Java小白,eclipse中导入图形界面包就会出错,程序没有问题,请大神指点. Description Resource Path Location Type Access restriction: The type JOptionPane is not accessible due to restriction on required library C:Program FilesJavajre1.8.0_20librt.jar dialog.java /myjava3/src l
问题描述 java引用数据类型的问题,请大神解释下标注的问题..... import java.util.Scanner; public class Bank implements Runnable { Acount acount; public Bank(Acount a) -->这个构造方法的含义? { this.acount=a; } public void run() { Scanner input=new Scanner(System.in); System.out.println(&qu
问题描述 有一个关于Java的小题目,做了好久做不出来,还请大神帮我 package com.ustcsoft.javatraining2016.homework1.zhaoyao;public class homework1 { public static void main(String[] args) { Student student = new Student(); Student student2 = new Student(); Student student3 = new Stu