题解 | #创建单例对象#

public class Main { //上CSDN学习了一手才看明白 public static void main(String[] args) { Singleton s1 = Singleton.getInstance(); Singleton s2 = Singleton.getInstance(); System.out.println(s1 == s2); }

}

class Singleton {

private static Singleton instance;

private Singleton() {

}

//write your code here......
public static Singleton getInstance(){
    if(instance == null){
        instance = new Singleton();
    }
    return instance;
}

}