标准Javabean

一、这是些概念性的介绍

 

 二、代码演示

1、这是bean

package javabean;
public class User {
    // 1、成员变量建议使用private私有
    private String name;
    private double height;
    private double salary;
    /**
     * 无参构造器
     */
    public User() {
    }
    /**
     * 有参构造器是可选的
     */
    public User(String name, double height, double salary) {
        this.name = name;
        this.height = height;
        this.salary = salary;
    }
    /**
     * 2、必须为成员变量提供成套的getter 和setter方法
     */
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public double getHeight() {
        return height;
    }
    public void setHeight(double height) {
        this.height = height;
    }
    public double getSalary() {
        return salary;
    }
    public void setSalary(double salary) {
        this.salary = salary;
    }
}

2、这是个测试类

package javabean;
public class Test {
    public static void main(String[] args) {
        // 1、无参数构造器创建对象封装要给用户信息
        User user1 = new User();
        user1.setName("程果");
        user1.setHeight(170);
        user1.setSalary(1000);
        System.out.println(user1.getName());
        System.out.println(user1.getHeight());
        System.out.println(user1.getSalary());

        // 2、有参数构造器创建对象封装要给用户信息
        User user2 = new User("武大郎", 180, 100000);
        System.out.println(user2.getName());
        System.out.println(user2.getHeight());
        System.out.println(user2.getSalary());

    }
}

感觉并没有什么卵用，继续学习……