这是一段超市管理系统用户登录代码，哪位可以简单的讲解一下吗

Question

package user;

public class user {
    int id;
    String username;
    String pwd;
    String isAuser;
    public String getIsAuser() {
        return isAuser;
    }
    public void setIsAuser(String isAuser) {
        this.isAuser = isAuser;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPwd() {
        return pwd;
    }
    public void setPwd(String pwd) {
        this.pwd = pwd;
    }
}

Answer 1

代码没贴全吧，这只是一个简单的Java bean