printdialog.java

Java程序设计技巧与开发实例附书源代码。

import java.awt.GridLayout;
import java.awt.FlowLayout;
import java.awt.BorderLayout;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
public class PrintDialog extends JFrame implements ActionListener
{  private JButton okay = new JButton("OK");
   private JButton cancel = new JButton("Cancel");
   private JRadioButton all = new JRadioButton("All Pages");
   private JRadioButton current = new JRadioButton("Current Page");
   private JRadioButton selected = new JRadioButton("Selected Pages");
   private JCheckBox numbers = new JCheckBox("Include Line Numbers");
   private JCheckBox headers = new JCheckBox("Header on all pages");
   private JCheckBox fileName = new JCheckBox("File name on each page");
   public PrintDialog()
   {  super("Print Dialog");
      ButtonGroup pageOptions = new ButtonGroup();
      pageOptions.add(all);
      pageOptions.add(current);
      pageOptions.add(selected);
      all.setSelected(true);
      JPanel pagePanel = new JPanel(new GridLayout(3,1));
      pagePanel.add(all);          all.addActionListener(this);
      pagePanel.add(current);      current.addActionListener(this);
      pagePanel.add(selected);     selected.addActionListener(this);
      pagePanel.setBorder(new TitledBorder("Print Range:"));
      JPanel optionsPanel = new JPanel(new GridLayout(3,1));
      optionsPanel.add(numbers);   numbers.addActionListener(this);
      optionsPanel.add(headers);   headers.addActionListener(this);
      optionsPanel.add(fileName);  fileName.addActionListener(this);
      optionsPanel.setBorder(new TitledBorder("Format Options:"));
      JPanel buttons = new JPanel(new FlowLayout());
      buttons.add(okay);           okay.addActionListener(this);
      buttons.add(cancel);         cancel.addActionListener(this);
      getContentPane().setLayout(new BorderLayout());
      getContentPane().add("West", pagePanel);
      getContentPane().add("East", optionsPanel);
      getContentPane().add("South", buttons);
      validate(); pack(); setVisible(true);
   }
   public void actionPerformed(ActionEvent ae)
   {  if ((ae.getSource() == okay) || (ae.getSource() == cancel))
         System.exit(0);
      else
         System.out.println("Command: " + ae.getActionCommand());
   }
   public static void main(String args[])
   {  try
      {  String lf = "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
         UIManager.setLookAndFeel(lf);
      }
      catch (Exception e)
      {  System.err.println("Exception: " + e); }
      PrintDialog pd = new PrintDialog();
   }
}