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