Java高并发程序-Chapter4 并行模式与算法（第二十三讲）单利模式

1.饿汉模式

package com.john.learn.high.concurent.ch04.singleton;

public class StarvationSingleton {

	public StarvationSingleton() {

		System.out.println("Starvation Singleton is created...");
	}

	public static StarvationSingleton getInstance() {
		return instance;
	}

	package com.john.learn.high.concurent.