package com.sincere.server2; import java.io.Serializable; public class User implements Serializable { private String student_num; public String getStudent_num() { return student_num; } public void setStudent_num(String student_num) { this.student_num = student_num; } @Override public String toString() { return "User{" + "student_num='" + student_num + '\'' + '}'; } }