package 第十二次; public abstract class Person { private String name; private int 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; } public Person(String name, int age) { this.name = name; this.age = age; } public Person() { super(); } @Override public String toString() { return "Person [name=" + name + ", age=" + age + "]"; } public abstract String speak(); } package 第十二次; public class Student extends Person{ private float score; public Student(String name, int age, float score) { super(name, age); this.setScore(score); } @Override public String speak() { return "学生说-->我的姓名:"+super.getName()+" "+super.getAge()+"岁 "+this.score+"分"; } public float getScore() { return score; } public void setScore(float score) { this.score = score; } } package 第十二次; public class Worker extends Person { private float salary; public Worker(String name, int age, float salary) { super(name, age); this.setSalary(salary); } @Override public String speak() { return "工人说 -->我的姓名:"+super.getName()+" "+super.getAge()+"岁 "+this.salary+"元"; } public float getSalary() { return salary; } public void setSalary(float salary) { this.salary = salary; } } public class DemoStudentWorker { public static void main(String[] args) { Person student=new Student("孔婷婷",3, 90f); Person worker=new Worker("小强",1, 8125f); print(student.speak()); print(worker.speak()); } private static void print(String speak) { System.out.println(speak); } }