Java第十二次作业：继承与抽象类解决工人与学生的问题，抽象类实例。抽象类作用——为多态创造了可能。抽象类的作用总结

继承与抽象类解决工人与学生的问题

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抽象类实例

package com.swift;

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 com.swift;

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 com.swift;

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;
    }
}
package com.swift;

public class DemoStudentWorker {

    public static void main(String[] args) {
        Person student=new Student("旺财",3, 90.5f);
        Person worker=new Worker("小强",1, 8125.5f);
        print(student.speak());
        print(worker.speak());
    }
    private static void print(String speak) {
        System.out.println(speak);
    }
}

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抽象类的作用——为多态创造了可能

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抽象类的作用总结

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