Singleton_Pattern

最新推荐文章于 2024-05-31 15:52:39 发布

原创最新推荐文章于 2024-05-31 15:52:39 发布 · 220 阅读

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#singleton_pattern #design_pattern #java

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本文详细介绍了懒汉式单例模式的实现方式，通过Java代码示例展示了如何确保在多线程环境下只创建一个实例。探讨了懒汉式、饿汉式及双重检查锁定等单例模式变种，并提供了完整的代码示例。

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package singleton_pattern;

public class Singleton {
private static Singleton instance;
private Singleton() {}//Make sure it cann't be invoked.
public static Singleton getInstance() {
if(instance == null) {
instance = new Singleton();
}
return instance;
}
}
/*You should know these:
*Lazy Singleton,Eager Singleton and Double Locked.
*More details please see:
*https://blog.youkuaiyun.com/GZHarryAnonymous/article/details/81567214
*/

package singleton_pattern;

public class Main {
public static void main(String args[]) {
Singleton s1 = Singleton.getInstance();
Singleton s2 = Singleton.getInstance();
if(s1 == s2) {
System.out.println("s1 is same with s2.");
}else {
System.out.println("s1 isn't same with s2.");
}
}
}
See more source code:[GZHarryAnonymous](https://github.com/GZHarryAnonymous/Design_Pattern)