随笔分类 - 设计模式
摘要：import com.google.common.collect.Lists;import org.springframework.beans.BeansException;import org.springframework.boot.CommandLineRunner;import org.sp
阅读全文
摘要：/** 懒汉式 volatile 防止指令重排序 1 分配空间 2 引用赋值 3 初始化操作 */public class LazySingleton { private static volatile LazySingleton lazySingleton; private LazySinglet
阅读全文
摘要：package com.example.SpringBootTest1.shejimoshi.singleton;public class HungrySingleton { private static final HungrySingleton hungrySingleton = new Hun
阅读全文
摘要：public class ObserveTest { public static void main(String[] args) { NotifyObject1 notifyObject1 = new NotifyObject1(); NotifyObject2 notifyObject2 = n
阅读全文
摘要：public class TemplateMethodTest { public static void main(String[] args) { AbstractClass abstractClass = new Subclass1(); abstractClass.operation(); /
阅读全文
摘要：public class StrategyTest { public static void main(String[] args) {// Zombie zombie = new FlagZombie(); Zombie zombie = new BigHeadZombie(); zombie.d
阅读全文
摘要：public class WrapperTest { public static void main(String[] args) { /** 拍照 */// Componnet conCreateComponnet = new ConCreateComponnet();// conCreateCo
阅读全文
摘要：/** * 建造者 */public abstract class Builder { // 地基 public abstract void buildA(); // 钢筋工程 public abstract void buildB(); // 粉刷 public abstract void bui
阅读全文
摘要：******************************************正确写法******************************************************package com.example.SpringBootTest1.shejimoshi.sin
阅读全文
摘要：// *****************************现象描述******************************* package com.example.SpringBootTest1.shejimoshi.singleton;public class InnerclassSi
阅读全文
摘要：public enum EnumSingleton { INSTANCE;} public class Test { public static void main(String[] args) { EnumSingleton instance1 = EnumSingleton.INSTANCE;
阅读全文
摘要：/** * 建造者 */public abstract class Builder { public abstract Builder buildA(String s); public abstract Builder buildB(String s); public abstract Builde
阅读全文
摘要：对象适配器模式(组合模式) public class AdapterTest { public static void main(String[] args) { Target target = new Adapter(new Adaptee()); target.output5v(); }}cla
阅读全文
摘要：public class System1 { public void dosomething() { System.out.println("system1.."); }} public class System2 { public void dosomething() { System.out.p
阅读全文
摘要：public class TreeNode { private Integer x; private Integer y; private Tree tree; public TreeNode(Integer x, Integer y, Tree tree) { this.x = x; this.y
阅读全文
摘要：浅拷贝 @Datapublic class ShopItem implements Cloneable { private String shopItemName; public ShopItem clone() throws CloneNotSupportedException { ShopIte
阅读全文
摘要：public class InnerclassSingleton { private InnerclassSingleton() {}; private static class Singleton { private static final InnerclassSingleton i = new
阅读全文