Confused about JApplet class

[ScarFace 01]

Hello Guys,

I am beginner to the field of java programming. I have good knowledge about the VB programming, but it's totally different from java programming. The inbuilt classes of java seems very completed to know. I am getting troubled while reviewing 'JApplet class' of java language. I wonder if anyone of you provide me some details about the JApplet class of java with proper example. I am waiting for your reply.

[opaper]

Hi,

A JApplet class is an an extended version of java.applet.Applet that adds support for the JFC/Swing component architecture. The JApplet class is slightly incompatible with java.applet.Applet. JApplet contains a JRootPane as it's only child. The contentPane should be the parent of any children of the JApplet. This is different than java.applet.Applet. The contentPane() will always be non-null. Attempting to set it to null will cause the JApplet to throw an exception.

[MindSpace]

Following example will demonstrate you the use of destroy() methods of JApplet class:

import javax.swing.JApplet;
import java.awt.Graphics;

public class JAppletDM extends JApplet {
  String strg1 = "";

  public void init() {
    strg1 += "init; ";
  }

  public void start() {
    strg1 += "start; ";
  }

  public void stop() {
    strg1 += "stop; ";
  }

  public void destrg1oy() {
    System.out.println("destroy");
  }

  public void paint(Graphics g) {
    g.drawString(strg1, 12, 25);
  }
}

[Modifier]

Hi friend,

To use JApplet class of java, for that you must need review following it's methods:

• setRootPaneCheckingEnabled(boolean bln)
• setRootPane(JRootPane Jroot)
• setLayout(LayoutManager LYmanager)
• setLayeredPane(JLayeredPane layeredPn)
• setGlassPane(Component glsPane)
• setContentPane(Container cntPane)

[Praetor]

Hi,

I hope following java example will definitely solve your confusion about the JApplet class. Please copy this program and try to execute it:

import javax.swing.JApplet;
import java.applet.AppletContext;
import java.awt.Graphics;
import java.net.URL;

public class JAppMainClass extends JApplet {

  public void paint(Graphics gr) {
    AppletContext acV = getAppletContext();
    try {
      URL url1 = new URL("http://www.forums.techarena.in");
      acV.showDocument(url, "frame2");
    } catch (Exception e) {
      showStatus("Exception: " + e);
    }
    gr.drawString("ShowDocument Applet", 15, 25);
  }
}

[Katty]

I suggest you to refer following nested classes of JApplet class:

1. JApplet.AccessibleJApplet
2. Component.AccessibleAWTComponent
3. Panel.AccessibleAWTPanel
4. Component.FlipBufferStrategy
5. Applet.AccessibleApplet