简单的java聊天工具

package chatTool; import java.io.*; import java.net.*; import javax.swing.*; import java.awt.*; import java.awt.event.*; public class SimpleChatClient { JTextArea incoming; JTextField outgoing; BufferedReader reader; PrintWriter writer; Socket sock; public static void main(String args[]) { SimpleChatClient client = new SimpleChatClient(); client.go(); } private void go() { JFrame frame = new JFrame("Simple Chat Client"); JPanel mainPanel = new JPanel(); incoming = new JTextArea(15, 30); incoming.setLineWrap(true); incoming.setEditable(false); JScrollPane qScroller = new JScrollPane(incoming); qScroller .setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS); qScroller .setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER); outgoing = new JTextField(20); JButton sendButton = new JButton("Send"); sendButton.addActionListener(new SendButtonListener()); mainPanel.add(qScroller); mainPanel.add(outgoing); mainPanel.add(sendButton); setUpNetworking(); Thread readerThread = new Thread(new IncomingReader()); readerThread.start(); frame.getContentPane().add(BorderLayout.CENTER, mainPanel); frame.setSize(400, 500); frame.setVisible(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } private void setUpNetworking() { try { sock = new Socket("192.168.1.102", 5000); InputStreamReader streamreader = new InputStreamReader(sock .getInputStream()); reader = new BufferedReader(streamreader); writer = new PrintWriter(sock.getOutputStream()); System.out.println("Networking established"); } catch (Exception e) { e.printStackTrace(); System.out.println("Establish failed."); } } public class SendButtonListener implements ActionListener { public void actionPerformed(ActionEvent ev) { try { writer.println(outgoing.getText()); writer.flush(); } catch (Exception e) { e.printStackTrace(); } outgoing.setText(null); outgoing.requestFocus(); } } public class IncomingReader implements Runnable { public void run() { String message; try { while ((message = reader.readLine()) != null) { System.out.println("read " + message); incoming.append(message + "\n"); } } catch (Exception e) { } } } }