题解 | #创建单例对象#

原来这就是单例对象!!!!

public class Main {

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() {
    
}

public static Singleton getInstance() {
    return instance;
}

}