java制作带界面的聊天工具

package com.FakeQQ.entity;import java.util.Date;public class Message {  //需要序列化发送，所以要继承Serializable接口    private int id;    private String content;    private int sender;    private int receiver;    private Date sendTime;    private Date receiveTime;    private int state;    private int ip;    public int getIp() {      return ip;    }    public void setIp(int ip) {      this.ip = ip;    }    public int getId() {      return id;    }    public void setId(int id) {      this.id = id;    }    public String getContent() {      return content;    }    public void setContent(String content) {      this.content = content;    }    public int getSender() {      return sender;    }    public void setSender(int sender) {      this.sender = sender;    }    public int getReceiver() {      return receiver;    }    public void setReceiver(int receiver) {      this.receiver = receiver;    }    public Date getSendTime() {      return sendTime;    }    public void setSendTime(Date sendTime) {      this.sendTime = sendTime;    }    public Date getReceiveTime() {      return receiveTime;    }    public void setReceiveTime(Date receiveTime) {      this.receiveTime = receiveTime;    }    public int getState() {      return state;    }    public void setState(int state) {      this.state = state;    }  }

package com.FakeQQ.entity;import java.util.Date;public class User {    //这叫实体bin    private int qqNumber;    private String qqName;    private String qqPassword;    private Date registTime; //注册时间    private String sex;    private String introduce; //个人简介    private String ip;    public int getQqNumber() {      return qqNumber;    }    public void setQqNumber(int qqNumber) {      this.qqNumber = qqNumber;    }    public String getQqName() {      return qqName;    }    public void setQqName(String qqName) {      this.qqName = qqName;    }    public String getQqPassword() {      return qqPassword;    }    public void setQqPassword(String qqPassword) {      this.qqPassword = qqPassword;    }    public Date getRegistTime() {      return registTime;    }    public void setRegistTime(Date registTime) {      this.registTime = registTime;    }    public String getSex() {      return sex;    }    public void setSex(String sex) {      this.sex = sex;    }    public String getIntroduce() {      return introduce;    }    public void setIntroduce(String introduce) {      this.introduce = introduce;    }    public String getIp() {      return ip;    }    public void setIp(String ip) {      this.ip = ip;    }  }