package com.study; public class Child extends Father{ private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } @Override public String toString() { return "Child{" + "name='" + name + '\'' + '}'; } public Child() { } public Child(String name) { this.name = name; } public void say(){ System.out.println("I am a child."); } }