单例模式java代码

最新推荐文章于 2025-06-01 22:43:27 发布

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#单例模式 #singleton

package Singleton;

public class Singleton {
	private static Singleton singleton = null;
	static int nums = 0;

	private Singleton() {

	}

	public void print() {
		System.out.println(nums);
	}

	public synchronized static Singleton getInstance() {
		nums++;
		if (singleton == null) {
			return singleton = new Singleton();
		}
		return singleton;
	}

}

package Singleton;

public class Client {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		for (int i = 0; i < 10; i++) {
			Singleton singleton = Singleton.getInstance();
			singleton.print();
		}
	}

}