Java中如何破坏单例模式呢?

破坏单例模式的实现思路

 我们只需使用反射的方式
     即可破坏单例模式,使其出现两个单例对象

package com.java265.a;

public class Singleton {
    private static class SingletonHolder {
        private static final Singleton INSTANCE = new Singleton();
    }
 
    private Singleton() {
    }
 
    public static Singleton getInstance() {
        return SingletonHolder.INSTANCE;
    }
}

测试类:

package com.java265.a;
import java.lang.reflect.Constructor; 
public class Demo {
    public static void main(String[] args) {
        Class<?> singletonClass = Singleton.class;
        try {
            Constructor c = singletonClass.getDeclaredConstructor(null);
            c.setAccessible(true);
            Object singleton1 = c.newInstance();
            Object singleton2 = c.newInstance();
            System.out.println(singleton1 == singleton2);
        } catch (Throwable e) {
            e.printStackTrace();
        }
    }
}

----运行以上代码，将输出以下信息-----
false