代码块package edu.xcdq.demo02; public class Demo02 { }测试块package edu.xcdq.d...

代码块package edu.xcdq.demo01; public class MyThread extends Thread{public ...

package edu.xcdq.tools; import java.util.ArrayList;import java.util.Arra...

package edu.xucd.demo03; public class demo03 {public static void main(St...

Hashset:package edu.xcdq.set; import java.util.HashSet; public class Has...

package edu.xcdq.list; import java.util.ArrayList;import java.util.List;

代码块：package edu.xucd; public class Demo04 {/*调用者的异常类型要比被调用者的异常类型“大”Excep...

package edu.xucd; public class Demo01 {public static void main(String[] ...

package com.feige; import java.util.Scanner; public class Main {Scanner ...