方法重写1

package lianxii;

import java.util.Date;

public class Person {

    protected String name;
    protected int    age;
    protected Date   birthDate;

    public String getName() {

        return name;
    }

    public void setName(String name) {

        this.name = name;
    }

    public int getAge() {

        return age;
    }

    public void setAge(int age) {

        this.age = age;
    }

    public String getInfo() {

        return "Name:" + name + "\n" + "age:" + age;
    }

}
//类Person

package lianxii;

public class Student extends Person {

    protected String school;

    public String getSchool() {

        return school;
    }

    public void setSchool(String school) {

        this.school = school;
    }

    @Override
    public String getInfo() {

        return "Name:" + name + "\nage:" + age + "\nschool:" + school;
    }

    public static void main(String[] args) {

        //        Person t = new Person();
        //        t.setAge(20);
        //        t.setName("jinzhi");
        //        int u = t.getAge();
        //        String o = t.getName();
        //        System.out.println("u:" + u);
        //        System.out.println("o:" + o);
        //        String bb = t.getInfo();
        //        System.out.println("bb:" + bb);

        Student y = new Student();
        y.setAge(25);
        y.setName("jinjin");
        y.setSchool("beiyou");
        String r = y.getInfo();
        System.out.println(r);

    }

}
//类Student
//结果：
//Name:jinjin
//age:25
//school:beiyou