Java定义People类

Java定义People类，它具有以下成员变量：String name，int age，它有两个构造方法！

package testclass;

public class PeopleClass {

public static void main(String[] args) {
// TODO Auto-generated method stub
Student s = new Student("s1");
s.work();
Teacher t = new Teacher("t1");
t.work();
}
}
class People{
private String name;
private Integer age=20;

public People(String name, Integer age){
System.out.println("A1");
this.name = name;
this.age = age;
}

public People(String name){
System.out.println("A2");
this.name = name;
new People(name, age);
}

public void work(){
System.out.println("A work");
}
}

class Teacher extends People{
public Teacher(String name){
super(name);
}

public void work(){
System.out.println("T are teach");
}
}

class Student extends People{
public Student(String name){
super(name);
}

public void work(){
System.out.println("Student are teach");
}
}