topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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#applet-echo.jva

#applet-echo.jva / applet-echo


  import java.applet.*;
  import java.awt.*;
  import java.awt.event.*;
  import java.io.*;
  import java.net.*;
  
  public class @jva-applet-echo extends Applet {
          TextField nameTF, passTF, domainTF;
          Image im;
          Button sendButton;
Where the Applet came from

  
          URL whence;
  
          //+
Initialize the GUI nicely.

  
          public void init() {
                  Label aLabel;
  
                  setLayout(new GridBagLayout());
                  int LOGO_COL = 1;
                  int LABEL_COL = 2;
                  int TEXT_COL = 3;
                  int BUTTON_COL = 1;
                  GridBagConstraints gbc = new GridBagConstraints();
                  gbc.weightx = 100.0; gbc.weighty = 100.0;
  
                  gbc.gridx = LABEL_COL; gbc.gridy = 0; 
                  gbc.anchor = GridBagConstraints.EAST;
                  add(aLabel = new Label("Name:", Label.CENTER), gbc);
                  gbc.anchor = GridBagConstraints.CENTER;
                  gbc.gridx = TEXT_COL; gbc.gridy = 0;
                  add(nameTF=new TextField(10), gbc);
  
                  gbc.gridx = LABEL_COL; gbc.gridy = 1;
                  gbc.anchor = GridBagConstraints.EAST;
                  add(aLabel = new Label("Password:", Label.CENTER), gbc);
                  gbc.anchor = GridBagConstraints.CENTER;
                  gbc.gridx = TEXT_COL; gbc.gridy = 1;
                  add(passTF=new TextField(10), gbc);
                  passTF.setEchoChar('*');
  
                  gbc.gridx = LABEL_COL; gbc.gridy = 2;
                  gbc.anchor = GridBagConstraints.EAST;
                  add(aLabel = new Label("Domain:", Label.CENTER), gbc);
                  gbc.anchor = GridBagConstraints.CENTER;
                  gbc.gridx = TEXT_COL; gbc.gridy = 2;
                  add(domainTF=new TextField(10), gbc);
                  sendButton = new Button("Send data");
                  gbc.gridx = BUTTON_COL; gbc.gridy = 3;
                  gbc.gridwidth = 3;
                  add(sendButton, gbc);
  
                  whence = getCodeBase();
  
                  // Now the action begins...
                  sendButton.addActionListener(new ActionListener() {
                          public void actionPerformed(ActionEvent evt) {
                                  String name = nameTF.getText();
                                  if (name.length() == 0) {
                                          showStatus("Name required");
                                          return;
                                  }
                                  String domain = domainTF.getText();
                                  if (domain.length() == 0) {
                                          showStatus("Domain required");
                                          return;
                                  }
                                  showStatus("Connecting to host " + whence.getHost() +
                                          " as " + nameTF.getText());
  
                                  try {
                                          Socket s = new Socket(getCodeBase().getHost(), 
                                                  1234); //SocketServer.PORT);
                                          PrintWriter pf = new PrintWriter(s.getOutputStream(), true);
                                          // send login name
                                          pf.println(nameTF.getText());
                                          // passwd
                                          pf.println(passTF.getText());
                                          // and domain
                                          pf.println(domainTF.getText());
  
                                          BufferedReader is = new BufferedReader(
                                                  new InputStreamReader(s.getInputStream()));
                                          String response = is.readLine();
                                          showStatus(response);
                                  } catch (IOException e) {
                                          showStatus("ERROR: " + e.getMessage());
                                  }
                          }
                  });
          }
          //-
  }
  /*
  <APPLET CODE="SocketApplet" width=300 height=120>
  </APPLET>
  */
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

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