子类中调用父类，父类中的this指向的是子类

项目中遇到一些诡异的情况，就是这个问题引起的

package com.jenson.extend;

public class Parent {

    public void printMsg() {
        System.out.println("parent");
    }
    
    public void printClassMsg() {
        System.out.println(this.getClass().getName());
        this.printMsg();
    }
}

package com.jenson.extend;

public class Child extends Parent {
    @Override
    public void printMsg() {
        super.printMsg();
        System.out.println("child add");
    }

    @Override
    public void printClassMsg() {
        super.printClassMsg();
    }
}

package com.jenson.extend;

public class ExtendTest {

    public static void main(String[] args) {
        Parent p = new Parent();
        p.printClassMsg();
        System.out.println("-----------------------");
        Child c = new Child();
        c.printClassMsg();
    }
}

输出

com.jenson.extend.Parent
parent
-----------------------
com.jenson.extend.Child
parent
child add