java单例模式1

package com.javabase.sss;

public class TestSingles {

	public static void main(String[] args) {
		
		Singles s1 = Singles.getSince();
		System.out.println(s1.getI());
		Singles s2 = Singles.getSince();
		System.out.println(s2.getI());
		Singles s3 = Singles.getSince();
		System.out.println(s3.getI());
		//比较地址
		System.out.println(s1 == s2);
		

	}

}