Java练习（二十九）---多态数组

父类

public class person {
    private String name;
    private int age;

    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;
    }
    public String say(){
        return "姓名："+name +"年龄："+age;
    }
}

子类Student

public class Student extends person{
    private double score;

    public Student(String name, int age, double score) {
        super(name, age);
        this.score = score;
    }

    public double getScore() {
        return score;
    }

    public void setScore(double score) {
        this.score = score;
    }

    @Override
    public String say() {
        return super.say()+"分数："+score;
    }
}

子类Teacher

public class Teacher extends person{
    private double salary;

    public Teacher(String name, int age, double salary) {
        super(name, age);
        this.salary = salary;
    }

    public double getSalary() {
        return salary;
    }

    public void setSalary(double salary) {
        this.salary = salary;
    }

    @Override
    public String say() {
        return super.say()+"工资："+salary;
    }
}

调用类

public class Test {
    public static void main(String[] args) {
        person[] p = new person[5];
        p[0] = new person("张三",18);
        p[1] = new Student("李四",10,100.9);
        p[2] = new Student("王五",13,54.9);
        p[3] = new Teacher("小王",24,3000.8);
        p[4] = new Teacher("小李",23,3400.76);

        for (int i = 0; i < p.length; i++) {
            System.out.println(p[i].say());
        }
    }
}

输出结果：
姓名：张三年龄：18
姓名：李四年龄：10分数：100.9
姓名：王五年龄：13分数：54.9
姓名：小王年龄：24工资：3000.8
姓名：小李年龄：23工资：3400.76