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Person类：（父类）
public class Person {
?? ?private String name;
?? ?private int age;
?? ?
?? ?public Person(){
?? ??? ?this("李四",20);
?? ?}
?? ?public Person(String name,int age){
?? ??? ?this.name=name;
?? ??? ?this.age=age;
?? ?}
?? ?
?? ?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;
?? ?}
}
Student类：（子类）
public class Student extends Person {
?? ?public Student(String name,int age){
?? ??? ?super(name,age);
?? ?}
?? ?public Student(){?? ?
?? ?}
}
Worker类：（子类）
public class Worker extends Person {
?? ?public Worker(String name,age);
?? ?}
?? ?public Worker(){?? ?
?? ?}
}
测试Test类：
public class Test {
?? ?public static void main(String[] args) {
?? ??? ?Person p=new Person("张三",23);
?? ??? ?System.out.println(p.getName());
?? ??? ?System.out.println(p.getAge());
?? ??? ?
?? ??? ?Student s=new Student();
?? ??? ?System.out.println(s.getAge());
?? ??? ?System.out.println(s.getName());
?? ??? ?
?? ??? ?Worker w=new Worker("王五",27);
?? ??? ?System.out.println(w.getName());
?? ??? ?System.out.println(w.getAge());
?? ?}
}
（编辑：北几岛）
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