java中消息窗口的代码（java弹出消息框的代码）

今天给各位分享java中消息窗口的代码的知识，其中也会对java弹出消息框的代码进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！

本文目录一览：

• 1、javaSwing 关闭窗口，弹出消息框,无论我点击是，否 都关闭窗口，见代码！
• 2、请问能不能帮我写一个Java的聊天窗口文件源代码，不要很复杂，只要能运行，聊天就行了！我用淘宝金币换,谢
• 3、急需一个java编程实现的简单聊天窗口代码
• 4、java 将输出的信息显示到一个窗口中
• 5、求java窗口程序编程？

javaSwing 关闭窗口，弹出消息框,无论我点击是，否 都关闭窗口，见代码！

构造函数中加一句setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);

请问能不能帮我写一个Java的聊天窗口文件源代码，不要很复杂，只要能运行，聊天就行了！我用淘宝金币换,谢

话说网上真的好多啊...

package client;

import java.awt.Color;

import java.awt.Container;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.IOException;

import java.net.Socket;

import java.util.Date;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

public class ClientFrame extends JFrame{

private JTextArea allmsg;

private JTextField welcome,copyright,chatmsg;

private JButton send;

private JScrollPane js;

private boolean isConnected = true;

public DataOutputStream out;

public DataInputStream in;

public Socket s = null;

String nic; /* -- 保存用户昵称 --*/

/**

* 初始化客户端资源

* 1.获取从LoginFrame传递过来的参数

* 2.初始化界面元素

* 3.初始化通信所需要的资源 EG：输入/输出流(DataInputStream/DataOutputStream)

* */

public ClientFrame(String name,Socket socket)

{

this.setSize(310,660);

this.setLocation(290,50);

this.setTitle("聊天室客户端"+name+"");/* -- 指定窗口的标题 --*/

this.s = socket;/* -- 接收从LoginFrame中传递过来的Socket --*/

this.nic = name+" 说： ";

welcome = new JTextField(" "+name+" 欢迎您来到聊天室 ",100);

welcome.setBackground(Color.blue);

welcome.setEnabled(false);

copyright = new JTextField(" ----- all copyright @ TOP-king -----");

copyright.setEnabled(false);

allmsg = new JTextArea();

allmsg.setEditable(false);

allmsg.append(" 系统消息: 欢迎登录在线聊天室 \n");

js = new JScrollPane(allmsg);//为JTextArea添加滚动条

chatmsg = new JTextField("在此输入聊天信息");

chatmsg.addActionListener(new listen());

send = new JButton("发送");

send.addActionListener(new listen());/* -- 添加事件监听器 --*/

try {

out = new DataOutputStream(s.getOutputStream());

in = new DataInputStream(s.getInputStream());

} catch (IOException e) {JOptionPane.showMessageDialog(null, "系统异常","错误",JOptionPane.OK_CANCEL_OPTION);}

addcomponettocontainer();

/* -- 当用户关闭窗口时进行相关的处理 eg:Socket Data(Input/Output)Stream 的关闭--*/

this.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent we)

{

sendmsg("quitlogout");/* -- 向服务器端发送关闭信息 --*/

isConnected = false;

destory();/* -- 销毁窗口资源 --*/

}

});

new Thread(new linread()).start();/* -- 启动读取信息线程 --*/

}

public void addcomponettocontainer()

{

Container c = this.getContentPane();

c.setLayout(null);

welcome.setBounds(75,10,150,20);

js.setBounds(10,50,280,500);

chatmsg.setBounds(10,560,180,30);

send.setBounds(220,560,70,30);

copyright.setBounds(10,600,280,20);

c.add(welcome);

c.add(js);

c.add(chatmsg);

c.add(send);

c.add(copyright);

this.setVisible(true);

this.setResizable(false);

}

class listen implements ActionListener

{

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

if(e.getSource()==send||e.getSource()==chatmsg)

{

String msg = chatmsg.getText().trim();

if("".equals(msg))

{

JOptionPane.showMessageDialog(null,"发送信息不能为空!","错误",JOptionPane.OK_OPTION);

}

else

{sendmsg((new Date()).toLocaleString()+"\n"+nic+msg+"\n");chatmsg.setText("");}

}

}

}

/* -- 向服务器端发送信息 --*/

public void sendmsg(String m)

{

if(isConnected)//如果socket的输出流没关闭

{

try {

out.writeUTF(m);

} catch (IOException e) {

JOptionPane.showMessageDialog(null,"发送信息失败!(系统异常)","错误",JOptionPane.OK_OPTION);

}

}

else

{

JOptionPane.showMessageDialog(null,"发送信息失败!(服务器关闭/网络故障)","错误",JOptionPane.OK_OPTION);

}

}

/* -- 读取信息线程 --*/

class linread implements Runnable

{

public void run()

{

read();

}

public void read()

{

while(isConnected)

{

try {

String msg = in.readUTF();

if("SYSTEM_CLOSED".equals(msg))

{

JOptionPane.showMessageDialog(null,"读取消息失败(服务器关闭/网络故障)！","错误",JOptionPane.OK_OPTION);

isConnected = false;

}

else

allmsg.append(msg+"\n");

} catch (IOException e) {

}

}//end while

JOptionPane.showMessageDialog(null,"读取消息失败(服务器关闭/网络故障)！","错误",JOptionPane.OK_OPTION);

}//end read()

}

public void destory()

{

try {

this.out.close();

this.in.close();

this.s.close();

} catch (IOException e) {

}

this.dispose();

}

}

======================================================

package client;

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

import java.io.*;

import java.net.*;

public class LoginFrame extends JFrame{

private JTextField name;

private JTextField ip;

private JButton ok,cancle;

public Socket socket;

public LoginFrame()

{

super("登录框");

this.setSize(400,80);

this.setLocation(100,100);

name = new JTextField("昵称");

ip = new JTextField("127.0.0.1");

ok = new JButton("登录");

cancle = new JButton("取消");

ok.addActionListener(new listenEvent());

cancle.addActionListener(new listenEvent());

//建立容器

addcomponettocontainer();

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

}

/**

* 建立容器及控件

*/

public void addcomponettocontainer()

{

Container c = this.getContentPane();

c.setLayout(null);

name.setBounds(10,10,100,30);

ip.setBounds(120,10,100,30);

ok.setBounds(230,10,70,30);

cancle.setBounds(310,10,70,30);

c.add(name);

c.add(ip);

c.add(ok);

c.add(cancle);

this.setVisible(true);

this.setResizable(false);

}

public class listenEvent implements ActionListener

{

public void actionPerformed(ActionEvent event) {

// TODO Auto-generated method stub

if(event.getSource()==ok)

{

String n = name.getText().trim();

String i = ip.getText().trim();

if("".equals(n)||"".equals(i))

{

JOptionPane.showMessageDialog(null,"昵称、IP不能够为空!","错误",JOptionPane.OK_OPTION);

}

else{login(n,i);}

}

if(event.getSource()==cancle)

{

name.setText("");

ip.setText("");

}

}

}

/**

* 进行登录

* @param name

* @param ip

*/

public void login(String name,String ip)

{

try {

socket = new Socket(ip,7777);

DataOutputStream out = new DataOutputStream(socket.getOutputStream());

out.writeUTF(name);

out.flush();//强制输出缓存中的内容

//out.close();

new ClientFrame(name,socket);

destroywindow();

} catch (UnknownHostException e) {

JOptionPane.showMessageDialog(null,"找不到主机地址(IP错误/网络故障)！","错误",JOptionPane.OK_OPTION);

} catch (IOException e) {

}

}

public void destroywindow()

{

this.dispose();

}

public static void main(String[] args)

{

new LoginFrame();

}

}

==================================================

package server;

import java.awt.Container;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.IOException;

import java.net.ServerSocket;

import java.net.Socket;

import java.util.ArrayList;

import java.util.Date;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

public class ServerFrame extends JFrame{

/**

*

*/

private static final long serialVersionUID = 1L;

private JTextArea allmsg;

private JTextField currnum,totalnum,copyright,chatmsg;

private JButton send;

private JScrollPane js;

int num1,num2,port;/* -- num1:当前在线人数 num2:总上线人数 port:服务端口号 --*/

private ServerSocket ss;

ArrayListuser lists;//存放所有在线用户

public ServerFrame()

{

super("聊天室服务器端");

this.setSize(310,660);

this.setLocation(200,50);

lists = new ArrayListuser();

num1 = num2 =0;

port = 7777;

currnum = new JTextField(" 当前在线人数： "+num1);

currnum.setEnabled(false);

totalnum = new JTextField(" 上线总人数： "+num2);

totalnum.setEnabled(false);

copyright = new JTextField(" ----- all copyright @ TOP-king -----");

copyright.setEnabled(false);

allmsg = new JTextArea();

allmsg.append(" --------------- 系统消息 --------------\n");

allmsg.setEditable(false);

allmsg.setLineWrap(true); //允许自动换行

js = new JScrollPane(allmsg);//为JTextArea添加滚动条

chatmsg = new JTextField("在此输入系统信息");

chatmsg.addActionListener(new ActionListener(){

@SuppressWarnings("deprecation")

public void actionPerformed(ActionEvent arg0) {

String str = chatmsg.getText().trim();

if(!"".equals(str))

{sendmsg((new Date()).toLocaleString()+" -- 系统消息： "+str);chatmsg.setText("");}

else

JOptionPane.showMessageDialog(null, "消息不能为空","错误",JOptionPane.OK_OPTION);

chatmsg.setText("");/* -- 发送信息后，将输入栏中的信息清空 -- */

}

});

send = new JButton("发送");

send.addActionListener(new ActionListener(){

@SuppressWarnings("deprecation")

public void actionPerformed(ActionEvent arg0) {

String str = chatmsg.getText().trim();

if(!"".equals(str))

{sendmsg((new Date()).toLocaleString()+" -- 系统消息： "+str);chatmsg.setText("");}

else

JOptionPane.showMessageDialog(null, "消息不能为空","错误",JOptionPane.OK_OPTION);

chatmsg.setText("");/* -- 发送信息后，将输入栏中的信息清空 -- */

}

});

//建立容器

addcomponettocontainer();

this.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent we)

{

sendmsg("SYSTEM_CLOSED");/* -- 向客户端发送服务器关闭信息 -- */

destory();

}

});

start(); /* -- 启动连接服务 -- */

}

public void addcomponettocontainer()

{

//Container建立容器

Container c = this.getContentPane();

c.setLayout(null);

currnum.setBounds(20,15,130,20);

totalnum.setBounds(155,15,125,20);

js.setBounds(10,50,280,500);

chatmsg.setBounds(10,560,180,30);

send.setBounds(220,560,70,30);

copyright.setBounds(10,600,280,20);

c.add(currnum);

c.add(totalnum);

c.add(js);

c.add(chatmsg);

c.add(send);

c.add(copyright);

this.setVisible(true);

this.setResizable(false);

}

/**

* start()方法监听客户的连接

* 并且保存客户端的相关信息EG：用户昵称、用户所使用的Socket

* 用户连接到服务器成功之后，将其保存到用户列表中，并为该用户启动一个线程用于通信 */

@SuppressWarnings("deprecation")

public void start()

{

boolean isStarted = false;/* -- 用于标记服务器是否已经正常启动 -- */

try {

this.ss = new ServerSocket(port);

isStarted = true;

this.allmsg.append((new Date()).toLocaleString()+" 服务器启动 @ 端口: "+port+"\n");

while(isStarted)

{

Socket client = this.ss.accept(); /* -- 监听客户端的连接 -- */

DataInputStream in = new DataInputStream(client.getInputStream());

String name = in.readUTF();

user u = new user();

u.name = name;

u.socket = client;

lists.add(u); //将该用户加到列表中去

num1++;

num2++;

currnum.setText(" 当前在线人数： "+num1);

totalnum.setText(" 上线总人数： "+num2);

this.allmsg.append((new Date()).toLocaleString()+" : "+u.name+" 登录 \n");

new Thread(new ClientThread(u)).start();/* -- 为该用户启动一个通信线程 -- */

}

} catch (IOException e) {

System.out.println("服务器已经启动......");

System.exit(0);

}

}

/**

* 通信线程主要功能包括：

* 1.监听客户端输入的信息

* 2.将接收到的信息转发给其他用户 */

class ClientThread implements Runnable

{

user user = null;

boolean isConnected = true;

DataInputStream dis = null;

DataOutputStream dos = null;

public ClientThread(user u)

{

this.user = u;

try {

this.dis = new DataInputStream(this.user.socket.getInputStream());

this.dos = new DataOutputStream(this.user.socket.getOutputStream());

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public void run()

{

readmsg();

}

/* -- 读取客户的聊天信息 -- */

@SuppressWarnings("deprecation")

public void readmsg()

{

while(isConnected)

{

try {

String msg = dis.readUTF();

if("quitlogout".equals(msg))//当用户关闭客户端窗口时，发送quit字符串 表示用户已经退出

{

num1--;

try{

this.dis.close();

this.dos.close();

this.user.socket.close();

this.isConnected = false;

}catch(IOException ioe)

{

ioe.printStackTrace();

}finally{

this.isConnected = false;

if(dis!=null) this.dis.close();

if(dos!=null) this.dos.close();

if(this.user.socket!=null) this.user.socket.close();

}

lists.remove(this.user);//从列表中删除该用户

currnum.setText(" 当前在线人数： "+num1);

allmsg.append((new Date()).toLocaleString()+" : "+this.user.name+" 退出\n");

}

else

sendmsg(msg);

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

/* -- 将信息进行转发 -- */

public void sendmsg(String msg)

{

user us = new user();

DataOutputStream os = null;

if(lists.size()0)

{

for(int i=0;ilists.size();i++)

{

us = lists.get(i);

try {

os = new DataOutputStream(us.socket.getOutputStream());

os.writeUTF(msg);

} catch (IOException e) {

e.printStackTrace();

}

}

}

else

JOptionPane.showMessageDialog(null, "当前无用户在线。发送消息失败","失败",JOptionPane.OK_OPTION);

}

public void destory()

{

try {

this.ss.close();

} catch (IOException e) {

e.printStackTrace();

}

this.dispose();

}

public static void main(String[] args)

{

new ServerFrame();

}

}

=================================================

package server;

import java.net.*;

public class user {

String name;

Socket socket;

}

急需一个java编程实现的简单聊天窗口代码

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import java.net.*;

import java.io.*;

public class ClientDemo01 {

public static void main(String[] args){

JFrame f=new JFrame("AA");

JPanel p1=new JPanel();

JPanel p2=new JPanel();

JTextArea ta=new JTextArea(15,30);

ta.setEditable(false); //文本域只读

JScrollPane sp=new JScrollPane(ta); //滚动窗格

JTextField tf=new JTextField(20);

JButton b=new JButton("发送");

p1.add(sp);

p2.add(tf);

p2.add(b);

f.add(p1,"Center");

f.add(p2,"South");

f.setBounds(300,300,360,300);

f.setVisible(true);

f.setResizable(false);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Socket socket=null;

BufferedInputStream bis=null;

BufferedOutputStream bos=null;

try{

socket=new Socket("192.168.0.4",5000);

bis=new BufferedInputStream(socket.getInputStream());

bos=new BufferedOutputStream(socket.getOutputStream());

MyThread01 mt=new MyThread01(bis,ta);

mt.start();

}catch(Exception e){

e.printStackTrace();

}

b.addActionListener(new ButtonActionListener01(tf,ta,bos));

}

}

class ButtonActionListener01 implements ActionListener{

JTextField tf;

JTextArea ta;

BufferedOutputStream bos;

public ButtonActionListener01(JTextField tf,JTextArea ta,BufferedOutputStream bos){

this.tf=tf;

this.ta=ta;

this.bos=bos;

}

public void actionPerformed(ActionEvent e){

String message=tf.getText();

if(!message.equals("")){

tf.setText(""); //清空文本框

ta.append("AA:"+message+"\n"); //添加到文本域并换行

try{

bos.write(message.getBytes());

bos.flush();

}catch(Exception ex){

System.out.println("发送失败");

}

}

}

}

class MyThread01 extends Thread{

BufferedInputStream bis;

JTextArea ta;

public MyThread01(BufferedInputStream bis,JTextArea ta){

this.bis=bis;

this.ta=ta;

}

public void run(){

try{

while(true){

byte[] b=new byte[100];

int length=bis.read(b);

String message=new String(b,0,length);

ta.append("BB:"+message+"\n");

}

}catch(Exception e){

e.printStackTrace();

}

}

} import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import java.net.*;

import java.io.*;

public class ServerDemo01{

public static void main(String[] args){

JFrame f=new JFrame("BB");

JPanel p1=new JPanel();

JPanel p2=new JPanel();

JTextArea ta=new JTextArea(12,30); //文本域，第一个参数为行数，第二个参数为列数

ta.setEditable(false); //文本域只读

JScrollPane sp=new JScrollPane(ta); //滚动窗格

JTextField tf=new JTextField(20);

JButton b=new JButton("发送");

p1.add(sp);

p2.add(tf);

p2.add(b);

f.add(p1,"Center");

f.add(p2,"South");

f.setBounds(300,300,360,300);

f.setVisible(true);

f.setResizable(false);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

ServerSocket server=null;

Socket socket=null;

BufferedInputStream bis=null;

BufferedOutputStream bos=null;

try{

server=new ServerSocket(5000);

//ta.append("等待AA连接...\n");

socket=server.accept();

//ta.append("AA已连接\n");

bis=new BufferedInputStream(socket.getInputStream());

bos=new BufferedOutputStream(socket.getOutputStream());

MyThread1 mt=new MyThread1(bis,ta);

mt.start();

}catch(Exception e){

e.printStackTrace();

}

b.addActionListener(new ButtonActionListener1(tf,ta,bos));

}

}

class ButtonActionListener1 implements ActionListener{

JTextField tf;

JTextArea ta;

BufferedOutputStream bos;

public ButtonActionListener1(JTextField tf,JTextArea ta,BufferedOutputStream bos){

this.tf=tf;

this.ta=ta;

this.bos=bos;

}

public void actionPerformed(ActionEvent e){

String message=tf.getText(); //获取文本框中的内容

if(!message.equals("")){

tf.setText(""); //清空文本框

ta.append("BB:"+message+"\n"); //添加到文本域并换行

try{

bos.write(message.getBytes());

bos.flush();

}catch(Exception ex){

System.out.println("发送失败！");

}

}

}

}

class MyThread1 extends Thread{

BufferedInputStream bis;

JTextArea ta;

public MyThread1(BufferedInputStream bis,JTextArea ta){

this.bis=bis;

this.ta=ta;

}

public void run(){

try{

while(true){

byte[] b=new byte[100];

int length=bis.read(b);

String message=new String(b,0,length);

ta.append("AA:"+message+"\n");

}

}catch(Exception e){

e.printStackTrace();

}

}

}

java 将输出的信息显示到一个窗口中

import java.io.*;

import java.util.*;

import javax.swing.*;

public class Text {

public static void main(String[] args) throws IOException {

int n = Integer.parseInt(JOptionPane.showInputDialog("input a number:"));

Random r = new Random();

int[] a = new int[50];

// 指定读取的行号

for (int i = 0; i  n; i++) {

a[i] = r.nextInt(30) + 0;

for (int j = i - 1; j = 0; j--) {

if (a[i] == a[j])

i--;

}

}

StringBuilder sb = new StringBuilder();

// 读取指定行的内容

for (int i = 0; i  n; i++) {

sb.append(getFileString("D:/abc.txt", a[i]));

}

new ReadSelectedLine(sb.toString());//新建界面写到了for循环里,就会出现很多的文本框

//只需要一个界面,界面需要一个参数就是字符串参数显示到文本框

}

//把读取文件内容的文本的代码提取成一个方法,用于读取文字

static String getFileString(String fileName, int lineNumber) {

StringBuilder sb = new StringBuilder();

try {

BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(fileName)));

String line = reader.readLine();

int num = 0;

while (line != null) {

if (lineNumber == ++num) {

sb.append(line);

sb.append("\r\n");

}

line = reader.readLine();

}

} catch (Exception e) {

}

return sb.toString();

}

}

//界面

class ReadSelectedLine extends JFrame {

private static final long serialVersionUID = 1L;

JTextArea ta = null;

JScrollPane jsp = null;

//只要一个参数

ReadSelectedLine(String txt) throws IOException {

this.setVisible(true);

this.setBounds(500, 200, 800, 600);

this.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);

ta = new JTextArea();

jsp = new JScrollPane(ta);

ta.setText(txt);

add(jsp);

validate();

}

}

求java窗口程序编程？

package window;

import java.awt.Container;

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JTextArea;

import javax.swing.JTextField;

public class Window extends JFrame{

public static int num = 0;

public static void main(String[] args) {

new Window();

}

public Window(){

//设置x y坐标

this.setLocation(400, 500);

//设置窗口大小

this.setSize(512, 512);

//设置窗口可见

this.setVisible(true);

//设置窗口关闭后程序停止

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//设置窗口不可移动

this.setResizable(false);

JButton but1 = new JButton("按钮");

final JTextField text1 = new JTextField(10);

java中消息窗口的代码的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于java弹出消息框的代码、java中消息窗口的代码的信息别忘了在本站进行查找喔。