java对话框源代码 java swing 对话框

如何在Eclipse中连接Java源码

工具/原料

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安装了Eclipse开发工具

电脑中下载有对应源码的zip包或JAR包

1打开我们Eclipse开发工具，点击菜单栏中的“Window”选项，这里有用于设置Eclipse的一些基本操作，如下图：

2点击“Window”弹出的下拉菜单中，我们看到“Preferences”这个选项，然后点击“Preferences”，将会弹出属性设置窗口，如下图：

3弹出“Preferences”属性设置窗口，你会看到窗口左边栏有一列可选项，我们点击“Java”选项，展开下拉选项，然后选中“Installed JREs”，如下图：

4在选中“Installed JREs”后，右边栏中，我们点击已经安装了的JREs，然后点击“Edit”按钮，将会进入编辑JREs窗口界面，如下图：

弹窗编辑JRE窗口，窗口中列出JRE在本地安装的路径、JRE名称和JRE里面包含的类库。在类库中，点击展开选项，在选项中看到“Source Attachment”并选中选项，然后点击“Source Attachment”，如下图：

6点击“Source Attachment”按钮后弹窗的窗口，是需要设置关联Java源代码的窗口，选中“External location”，然后选择本地种Zip包或JAR包文件，最后点击“OK”即可

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);

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);

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);

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);

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;

}

在Eclipse中，怎么查看某个类的源代码

1、首先打开eclipse，建立项目：Test，将struts2相关jar包导入到其中。在Package Explorer标签栏下操作。

2、这里查阅struts2中，struts2-core-2.3.12.jar下的源代码。在Test项目下，找到 Web App Libraries -- struts2-core-2.3.12.jar，右键单击struts2-core-2.3.12.jar，选择"Properties" 。

3、在新弹出的对话框中，选择Java Source Attachment -- External location -- External Floder...。

4、此时，又有新的对话框弹出。找到步骤1中提到的struts2-core-2.3.12.jar的源代码在硬盘中的位置，然后单击“确定”，回到上对话框，确定信息无误后，点击“OK”

5、此时，源代码就成功和Eclipse建立连接了。

求windows时间和日期属性对话框java源代码

import java.awt.*;

import java.awt.event.*;

import java.util.*;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.table.*;

public class MyCalendar extends JApplet {

public static final String WEEK_SUN = "SUN";

public static final String WEEK_MON = "MON";

public static final String WEEK_TUE = "TUE";

public static final String WEEK_WED = "WED";

public static final String WEEK_THU = "THU";

public static final String WEEK_FRI = "FRI";

public static final String WEEK_SAT = "SAT";

public static final Color background = Color.white;

public static final Color foreground = Color.black;

public static final Color headerBackground = Color.blue;

public static final Color headerForeground = Color.white;

public static final Color selectedBackground = Color.blue;

public static final Color selectedForeground = Color.white;

private JPanel cPane;

private JLabel yearsLabel;

private JSpinner yearsSpinner;

private JLabel monthsLabel;

private JComboBox monthsComboBox;

private JTable daysTable;

private AbstractTableModel daysModel;

private Calendar calendar;

public MyCalendar() {

cPane = (JPanel) getContentPane();

}

public void init() {

cPane.setLayout(new BorderLayout());

calendar = Calendar.getInstance();

yearsLabel = new JLabel("Year: ");

yearsSpinner = new JSpinner();

yearsSpinner.setEditor(new JSpinner.NumberEditor(yearsSpinner, "0000"));

yearsSpinner.setValue(new Integer(calendar.get(Calendar.YEAR)));

yearsSpinner.addChangeListener(new ChangeListener() {

public void stateChanged(ChangeEvent changeEvent) {

int day = calendar.get(Calendar.DAY_OF_MONTH);

calendar.set(Calendar.DAY_OF_MONTH, 1);

calendar.set(Calendar.YEAR, ((Integer) yearsSpinner.getValue()).intValue());

int maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);

calendar.set(Calendar.DAY_OF_MONTH, day maxDay ? maxDay : day);

updateView();

}

});

JPanel yearMonthPanel = new JPanel();

cPane.add(yearMonthPanel, BorderLayout.NORTH);

yearMonthPanel.setLayout(new BorderLayout());

yearMonthPanel.add(new JPanel(), BorderLayout.CENTER);

JPanel yearPanel = new JPanel();

yearMonthPanel.add(yearPanel, BorderLayout.WEST);

yearPanel.setLayout(new BorderLayout());

yearPanel.add(yearsLabel, BorderLayout.WEST);

yearPanel.add(yearsSpinner, BorderLayout.CENTER);

monthsLabel = new JLabel("Month: ");

monthsComboBox = new JComboBox();

for (int i = 1; i = 12; i++) {

monthsComboBox.addItem(new Integer(i));

}

monthsComboBox.setSelectedIndex(calendar.get(Calendar.MONTH));

monthsComboBox.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent actionEvent) {

int day = calendar.get(Calendar.DAY_OF_MONTH);

calendar.set(Calendar.DAY_OF_MONTH, 1);

calendar.set(Calendar.MONTH, monthsComboBox.getSelectedIndex());

int maxDay = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);

calendar.set(Calendar.DAY_OF_MONTH, day maxDay ? maxDay : day);

updateView();

}

});

JPanel monthPanel = new JPanel();

yearMonthPanel.add(monthPanel, BorderLayout.EAST);

monthPanel.setLayout(new BorderLayout());

monthPanel.add(monthsLabel, BorderLayout.WEST);

monthPanel.add(monthsComboBox, BorderLayout.CENTER);

daysModel = new AbstractTableModel() {

public int getRowCount() {

return 7;

}

public int getColumnCount() {

return 7;

}

public Object getValueAt(int row, int column) {

if (row == 0) {

return getHeader(column);

}

row--;

Calendar calendar = (Calendar) MyCalendar.this.calendar.clone();

calendar.set(Calendar.DAY_OF_MONTH, 1);

int dayCount = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);

int moreDayCount = calendar.get(Calendar.DAY_OF_WEEK) - 1;

int index = row * 7 + column;

int dayIndex = index - moreDayCount + 1;

if (index moreDayCount || dayIndex dayCount) {

return null;

} else {

return new Integer(dayIndex);

}

};

daysTable = new CalendarTable(daysModel, calendar);

daysTable.setCellSelectionEnabled(true);

daysTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

daysTable.setDefaultRenderer(daysTable.getColumnClass(0), new TableCellRenderer() {

public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,

boolean hasFocus, int row, int column) {

String text = (value == null) ? "" : value.toString();

JLabel cell = new JLabel(text);

cell.setOpaque(true);

if (row == 0) {

cell.setForeground(headerForeground);

cell.setBackground(headerBackground);

} else {

if (isSelected) {

cell.setForeground(selectedForeground);

cell.setBackground(selectedBackground);

} else {

cell.setForeground(foreground);

cell.setBackground(background);

}

return cell;

}

});

updateView();

cPane.add(daysTable, BorderLayout.CENTER);

}

public static String getHeader(int index) {

switch (index) {

case 0:

return WEEK_SUN;

case 1:

return WEEK_MON;

case 2:

return WEEK_TUE;

case 3:

return WEEK_WED;

case 4:

return WEEK_THU;

case 5:

return WEEK_FRI;

case 6:

return WEEK_SAT;

default:

return null;

}

public void updateView() {

daysModel.fireTableDataChanged();

daysTable.setRowSelectionInterval(calendar.get(Calendar.WEEK_OF_MONTH),

calendar.get(Calendar.WEEK_OF_MONTH));

daysTable.setColumnSelectionInterval(calendar.get(Calendar.DAY_OF_WEEK) - 1,

calendar.get(Calendar.DAY_OF_WEEK) - 1);

}

public static class CalendarTable extends JTable {

private Calendar calendar;

public CalendarTable(TableModel model, Calendar calendar) {

super(model);

this.calendar = calendar;

}

public void changeSelection(int row, int column, boolean toggle, boolean extend) {

super.changeSelection(row, column, toggle, extend);

if (row == 0) {

return;

}

Object obj = getValueAt(row, column);

if (obj != null) {

calendar.set(Calendar.DAY_OF_MONTH, ((Integer)obj).intValue());

}

public static void main(String[] args) {

JFrame frame = new JFrame("Calendar Application");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

MyCalendar myCalendar = new MyCalendar();

myCalendar.init();

frame.getContentPane().add(myCalendar);

frame.setSize(240, 172);

frame.show();

}

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