第23天

一、标准的Javabean

如下我们编写一个标准JavaBean模板。

package Test4;

public class user {
    private String username;
    private String key;
    private String email;
    private String gender;
    private int age;

    public user() {
    }

    public user(String username, String key, String email, String gender, int age) {
        this.username = username;
        this.key = key;
        this.email = email;
        this.gender = gender;
        this.age = age;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getUsername() {
        return username;
    }

    public void setKey(String key) {
        this.key = key;
    }

    public String getKey() {
        return key;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getEmail() {
        return email;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getGender() {
        return gender;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public int getAge() {
        return age;
    }
}

 二、对象的内存图

 

 栈区先进后出。即以下图是先消失study方法，然后消失main方法，然后main内所相应的变量也消失释放，最终方法区也释放。