import java.util.*;
import java.util.zip.*;
import java.util.List;
import java.util.regex.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.table.*;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.lang.ref.*;
import java.lang.management.*;
import java.security.*;
import java.security.spec.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.imageio.*;
import java.math.*;
import javax.swing.event.AncestorListener;
import javax.swing.event.AncestorEvent;
import javax.swing.Timer;
public class main {


static JFrame frame;

public static void main(String[] args) throws Exception {
  frame = showCenterFrame("Green...", 200, 200,
    singleColorPanel(Color.GREEN));
  swingAfter(frame, 5000, new Runnable() { public void run() { try { 
    setFrameContents(frame, singleColorPanel(Color.BLUE));
    setFrameTitle(frame, "Blue!");
  } catch (Exception __e) { throw __e instanceof RuntimeException ? (RuntimeException) __e : new RuntimeException(__e); }}});
}

static JComponent singleColorPanel(Color color) {
  JPanel p = new JPanel();
  p.setOpaque(true);
  p.setBackground(color);
  return p;
}
static void swingAfter(JFrame base, int delay, Runnable r) {
  installTimer((JComponent) base.getContentPane(), r, delay, delay, false);
}

static void swingAfter(JComponent base, int delay, Runnable r) {
  installTimer(base, r, delay, delay, false);
}
static boolean setFrameTitle(Component c, String title) {
  JFrame f = getFrame(c);
  if (f == null) return false;
  f.setTitle(title);
  return true;
}
static void setFrameContents(JFrame frame, Component contents) {
  frame.getContentPane().removeAll();
  frame.getContentPane().add(contents);
  revalidate(frame);
}
static JFrame showCenterFrame(String title, int w, int h, Component content) {
  JFrame frame = makeFrame(title, content);
  frame.setSize(w, h);
  return frame;
}

static void revalidate(JFrame frame) {
  // magic combo to actually relayout and repaint
  frame.revalidate();
  frame.repaint();
}
static JFrame makeFrame() {
  return makeFrame((Component) null);
}

static JFrame makeFrame(Component content) {
  // TODO: get program ID
  return makeFrame("A JavaX Frame", content);
}

static JFrame makeFrame(String title) {
  return makeFrame(title, null);
}

static JFrame makeFrame(String title, Component content) {
  JFrame frame = new JFrame(title);
  if (content != null)
    frame.getContentPane().add(content);
  frame.setBounds(300, 100, 500, 400);
  frame.setVisible(true);
  //exitOnFrameClose(frame);
  return frame;
}
static JFrame getFrame(Object o) {
  if (!(o instanceof Component)) return null;
  Component c = (Component) o;
  while (c != null) {
    if (c instanceof JFrame) return (JFrame) c;
    c = c.getParent();
  }
  return null;
}

static void installTimer(final JComponent component, final Runnable r, final int delay) {
  installTimer(component, r, delay, delay);
}

static void installTimer(final JComponent component, final Runnable r, final int delay, final int firstDelay) {
  installTimer(component, r, delay, firstDelay, true);
}

static void installTimer(final JComponent component, final Runnable r, final int delay, final int firstDelay, final boolean repeats) {
  SwingUtilities.invokeLater(new Runnable() {
public void run() {
try {

    final Timer timer = new Timer(delay, new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent _evt) { 
      r.run();
    }});
    timer.setInitialDelay(firstDelay);
    timer.setRepeats(repeats);
    
    if (component.isShowing())
      timer.start();
  
    component.addAncestorListener(new AncestorListener() {
      public void ancestorAdded(AncestorEvent event) {
        timer.start();
      }
  
      public void ancestorRemoved(AncestorEvent event) {
        timer.stop();
      }
  
      public void ancestorMoved(AncestorEvent event) {
      }
    });
  } catch (Exception _e) {
  throw _e instanceof RuntimeException ? (RuntimeException) _e : new RuntimeException(_e); } }
});
}

}