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package charpter17; //死锁:前提定义两个线程public class TestDeadLock { public static Object obj1 = new Object(); public static Object obj2 = new Object(); // 主方 阅读全文
摘要：
package chapter02; public class TestSingleton { private TestSingleton() { } public static TestSingleton getInstance() { try { Thread.sleep(5000); } ca 阅读全文
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package chapter02; public enum Season { //定义四个变量 SPRING,SUMMER,AUTUMN,WINTER; //定义一个私有构造方法 private Season(){ } } package com.bjpowernode.t02; public c 阅读全文