Java 三大特性之继承

Java 三大特性之继承

继承可以不用重新编写已有的特性,同时又可以根据需求来覆写方法

父类:

public class Father {
	protected String getText(){
		return "I am Father";
	}
}

子类:

public class Son extends Father{
	protected String getText(){
		return "I am Son";
	}
}

客户端:

public class Main {

	public static void main(String[] args) {
		Father f=new Father();
		System.out.println(f.getText());
		
		Father f2=new Son();
		System.out.println(f2.getText());
	}
}

 运行结果:

I am Father
I am Son