package basic;

/**
 * java中final的用法
 */

public class FinalUse extends Father {//, Son{ //final类无法被继承
// final int version; //会报错,因为final必须赋值
 final static int version = 1;

 //注意:无法重写父类的final方法
 @Override
 protected void marry() {
 System.out.println("儿子也结婚啦!");
 }

 public static void main(String[] args) {
// version = 2;//报错,无法修改
 Person person = new Person();
 person.age = 25;
 person.name = "gzq";//final类对象是可以修改值的
 FinalUse finalUse = new FinalUse();
 finalUse.marry();
 }

 final static class Person{
 int age;
 String name;
 }
}

class Father{
 final int age = 80;

 protected final void giveBirth(){
 System.out.println("生宝宝!");
 }

 protected void marry(){
 System.out.println("结婚!");
 }

}

final class Son{
 final int age = 10;

 protected final void giveBirth(){
 System.out.println("生宝宝!");
 }

 protected void marry(){
 System.out.println("结婚!");
 }

}