如何从继承的另一个类调用方法

class ParentClass {
    public void parentMethod() {
        System.out.println("This is a method from the parent class.");
    }
}

class ChildClass extends ParentClass {
    public void childMethod() {
        System.out.println("This is a method from the child class.");
    }
    
    public void callParentMethod() {
        super.parentMethod(); // 调用父类的方法
    }
}

public class Main {
    public static void main(String[] args) {
        ChildClass child = new ChildClass();
        child.childMethod(); // 调用子类的方法
        child.callParentMethod(); // 调用父类的方法
    }
}

This is a method from the child class.
This is a method from the parent class.