面向对象05-标准的Javabean

1. 标准的Javabean类

1. 类名要见名知意，驼峰命名

2. 成员变量使用private进行修饰

3. 至少提供两种构造方法

• 无参构造方法

• 带全部参数的构造方法

4. 成员方法

• 提供每一个成员变量对应的setXXX（）/getXxx（）

• 如果还有其他行为也需要写上

2. 一个单纯的练习

public class User {
    private String username;
    private String password;
    private String email;
    private String gender;
    private int age;
    public User(){
        
    }
    public User(String username,String password,String email,String gender,int age){
        this.age = age;
        this.email = email;
        this.gender = gender;
        this.username = username;
        this.password = password;
    }

    public void setAge(int age) {
        this.age = age;
    }
    public int getAge(){
        return age;
    }
    public void setUsername(String username){
        this.username = username;
    }
    public String getUsername(){
        return username;
    }

    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 setPassword(String password) {
        this.password = password;
    }

    public String getPassword() {
        return password;
    }
}

Java提供的快捷键

• alt+insert

构造方法英文叫做constructor，点击一下

1.选择select none 之后就是生成了空参构造

2.带全部参数的构造方法再一次点击constructor，全选，点击OK

3.然后Getter and Setter，全选，点击OK

• 插件ptg 1s生成标准的Javabean

//用插件生成的标准的Javabean
public class User {
    private String username;
    private String password;
    private String email;
    private String gender;
    private int age;

    public User() {
    }

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

    /**
     * 获取
     * @return username
     */
    public String getUsername() {
        return username;
    }

    /**
     * 设置
     * @param username
     */
    public void setUsername(String username) {
        this.username = username;
    }

    /**
     * 获取
     * @return password
     */
    public String getPassword() {
        return password;
    }

    /**
     * 设置
     * @param password
     */
    public void setPassword(String password) {
        this.password = password;
    }

    /**
     * 获取
     * @return email
     */
    public String getEmail() {
        return email;
    }

    /**
     * 设置
     * @param email
     */
    public void setEmail(String email) {
        this.email = email;
    }

    /**
     * 获取
     * @return gender
     */
    public String getGender() {
        return gender;
    }

    /**
     * 设置
     * @param gender
     */
    public void setGender(String gender) {
        this.gender = gender;
    }

    /**
     * 获取
     * @return age
     */
    public int getAge() {
        return age;
    }

    /**
     * 设置
     * @param age
     */
    public void setAge(int age) {
        this.age = age;
    }

    public String toString() {
        return "User{username = " + username + ", password = " + password + ", email = " + email + ", gender = " + gender + ", age = " + age + "}";
    }
}