How to change class extends with JApplet into JFrame?

[sky_B]

I have try to run a program of JApplet as JFrame, but it didn't works. Can someone help me?Thanks.

public class MyApplet extends JApplet{

//have some coding here

class display extends JPanel{
//have some coding here
}

public static void main(String [] arg){
	JFrame frame = new JFrame("MyApplet");
	MyApplet applet = new MyApplet();
        applet.init();

	applet.setSize(1000,650);
	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	frame.setVisible(true);
	frame.setResizable(false);
	frame.add(applet,BorderLayout.CENTER);

}

}

[NormR1]

it didn't work

Please explain.

Its best to setVisible after everything has been added to the frame.

To convert an applet to an application, treat the applet's GUI code as a panel (Which applet extends) and add that to the frame. Then add calls to the applet's methods that are called by the browser: init and start.
If the applet uses any AppletContext methods, you will need to provide them to the applet.

[sky_B]

Ok, its mean that my sounds clip and images didn't show up when I run it. And I try to add the applet.init() but it turns out to be an error message. Is like below :

Exception in thread "main" java.lang.NullPointerException
at java.applet.Applet.getDocumentBase(Unknown Source)
at MyApplet.init(MyApplet.java:93)
at MyApplet.main(MyApplet.java:161)

[NormR1]

If the applet uses any AppletContext/AppletStub methods, you will need to provide them to the applet.
When an applet is executed in a browser, the browser provides an AppletContext and AppletStub objects for the applet to use.

See post#4 on this thread for an example: http://www.java-forums.org/java-applets/30675-writing-hybrid-aplication.html