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