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POUse an object of JFrame in a Jpanel
 

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    <p>I have a class in java that extends JFrame it shows Time :</p> <pre><code>class Clock extends JFrame implements Runnable{ Thread runner; Font clockFont; </code></pre> <p>This code shows a Digital Clock</p> <pre><code> public Clock() { super("Java clock"); setSize( 350, 100); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setVisible(true); setResizable(false); clockFont = new Font("Serif", Font.BOLD, 40); Container contentArea = getContentPane(); ClockPanel timeDisplay = new ClockPanel(); contentArea.add(timeDisplay); setContentPane(contentArea); start(); } class ClockPanel extends JPanel { public void paintComponent(Graphics painter ) { Image pic = Toolkit.getDefaultToolkit().getImage("background.jpg"); if(pic != null){ painter.drawImage(pic, 0, 0, this); painter.setFont(clockFont); painter.setColor(Color.black); painter.drawString( timeNow(), 60, 40); } } public String timeNow() { Calendar now = Calendar.getInstance(); int hrs = now.get(Calendar.HOUR_OF_DAY); int min = now.get(Calendar.MINUTE); int sec = now.get(Calendar.SECOND); String time = zero(hrs)+":"+zero(min)+":"+zero(sec); return time; } public String zero(int num) { String number=( num &lt; 10) ? ("0"+num) : (""+num); return number; } public void start() { if(runner == null) runner = new Thread(this); runner.start(); } public void run() { while (runner == Thread.currentThread() ) { repaint(); try { Thread.sleep(1000); } catch(InterruptedException e) { System.out.println("Thread failed"); } } } </code></pre> <p>Now I wanna show that clock in a <code>JPanel</code> in my other Frame , how can I add an object of Clock class in Jpanel ?!</p> <p>Thanks for your help.</p>
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    1. USMahmood Kohansal
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    1. CO*"now i wanna ..Tnx .."* What I want to see in a technical forum is people taking a little effort with spelling phrases like 'want to' & 'thanks', and using the shift key at the start of sentences. :(
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      1. USAndrew Thompson
    2. CObut it's not my answer exactly!
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      1. USMahmood Kohansal
    3. CO1) For better help sooner, post an [SSCCE](http://sscce.org/) (logically indented). 2) Why have a 2nd frame? You probably need a modal dialog for that case. 3) Never load images in the `paintComponent()` method. Load it in the constructor and declare it as a class attribute for later use in paint. 4) Use `ImageIO.read()` for a blocking method to load images. 5) Use a Swing `Timer` to call `repaint()` instead of `Runnable`/`Thread`/`sleep()`.
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