Design Patterns 创建模式之 Singleton

最新推荐文章于 2025-07-07 22:53:26 发布

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本文详细解析了Singleton设计模式的两种实现方式：基于双检锁的懒汉式和饿汉式的Singleton类，并通过实例代码展示其具体应用。

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Design Patterns 创建模式之 Singleton
1 [b][color=red][size=x-large]Singleton [/size][/color][/b]

public class Single {
	private static Single single = null;
	private Single() {
		System.out.println("only one !");
	};
	public static Single getInstanceL() {
		synchronized (Single.class) {
			if (single == null) {
				single = new Single();
			}
		}
		return single;
	}
}
//-----------------------------------------------------
public class Single {
	private static Single single = new Single();
	private Single() {
		System.out.println("only one !");
	};
	public static Single getInstanceL() {
		return single;
	}
}