设计模式—单例模式

29e8b6cc · Mr.Liu · 6136212f · 29e8b6cc
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Singleton-Pattern/src/main/java/com/MrLiu/fly/lazy/LazyDoubleCheckSingleton.java ...ain/java/com/MrLiu/fly/lazy/LazyDoubleCheckSingleton.java +1 -0

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--- a/Singleton-Pattern/src/main/java/com/MrLiu/fly/lazy/LazyDoubleCheckSingleton.java
+++ b/Singleton-Pattern/src/main/java/com/MrLiu/fly/lazy/LazyDoubleCheckSingleton.java
@@ -8,6 +8,7 @@ package com.MrLiu.fly.lazy;
 */
 public class LazyDoubleCheckSingleton {

+    //使用volatile关键字保证了多喝CPU下数据的一致性
    private volatile static LazyDoubleCheckSingleton singleton = null;

    private LazyDoubleCheckSingleton(){};