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Java » Threads » Swing Thread 




SwingUtilities.invokeLater and swing thread
  
 
 

/*
 * Copyright (c) 2007, Romain Guy
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *   * Neither the name of the TimingFramework project nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.reflect.InvocationTargetException;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;

/**
 @author Romain Guy
 */
public class SwingThreadingWait extends JFrame implements ActionListener {
  private JLabel counter;

  private long start = 0;

  public SwingThreadingWait() {
    super("Invoke & Wait");

    JButton freezer = new JButton("Open File");
    freezer.addActionListener(this);

    counter = new JLabel("Time elapsed: 0s");

    add(freezer, BorderLayout.CENTER);
    add(counter, BorderLayout.SOUTH);

    pack();
    setLocationRelativeTo(null);

    setDefaultCloseOperation(EXIT_ON_CLOSE);
  }

  public void actionPerformed(ActionEvent e) {
    start = System.currentTimeMillis();
    new Thread(new Runnable() {
      public void run() {
        while (true) {
          try {
            Thread.sleep(1000);
          catch (InterruptedException e) {
          }

          final int elapsed = (int) ((System.currentTimeMillis() - start1000);
          SwingUtilities.invokeLater(new Runnable() {
            public void run() {
              counter.setText("Time elapsed: " + elapsed + "s");
            }
          });

          if (elapsed == 4) {
            try {
              final int[] answer = new int[1];
              SwingUtilities.invokeAndWait(new Runnable() {
                public void run() {
                  answer[0= JOptionPane.showConfirmDialog(SwingThreadingWait.this,
                      "Abort long operation?""Abort?", JOptionPane.YES_NO_OPTION);
                }
              });
              if (answer[0== JOptionPane.YES_OPTION) {
                return;
              }
            catch (InterruptedException e1) {
            catch (InvocationTargetException e1) {
            }
          }
        }
      }
    }).start();
  }

  public static void main(String... args) {
    SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        SwingThreadingWait edt = new SwingThreadingWait();
        edt.setVisible(true);
      }
    });
  }
}

 

   
    
  














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