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更新 src/main/java/cn/edu/zust/dubbo/ SingletonPattern.java/Singleton.java

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xuuuuu 2025-06-23 15:46:06 +08:00
parent beabd7c4ca
commit 23694e7694
1 changed files with 3 additions and 1 deletions
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src/main/java/cn/edu/zust/dubbo/ SingletonPattern.java/Singleton.java
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@ -1,9 +1,10 @@
package cn.edu.zust.dubbo; package cn.edu.zust.dubbo;
public class SingletonPattern { public class SingletonPattern {
// 单例模式实现示例
private static SingletonPattern instance; private static SingletonPattern instance;
private SingletonPattern() {} private SingletonPattern() {} // 私有构造函数
public static SingletonPattern getInstance() { public static SingletonPattern getInstance() {
if (instance == null) { if (instance == null) {
@ -16,6 +17,7 @@ public class SingletonPattern {
System.out.println("Singleton Pattern Demo"); System.out.println("Singleton Pattern Demo");
} }
// 程序入口
public static void main(String[] args) { public static void main(String[] args) {
SingletonPattern singleton = SingletonPattern.getInstance(); SingletonPattern singleton = SingletonPattern.getInstance();
singleton.showMessage(); singleton.showMessage();