PIctures in applet viewer

If someone could help me out, I'm trying to place a picture in a program I made in the applet viewer. Thx.

Or just to start ...
// <applet code='ACoolerAppletSimple' width='400' height='300'></applet>
 import java.applet.*;
 import java.awt.*;
 import java.net.*;
 public class ACoolerAppletSimple extends Applet {
 private Image bigGIF;
 public void init() {
 String gif = this.getCodeBase().toString() + "T1.gif";
 try {
 bigGIF = this.getImage(new URL(gif));
 catch (MalformedURLException e) { }
 public void paint(Graphics g) {
 g.drawImage(bigGIF, 0, 0, this);
 }

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1. Why does it work from the applet viewer and not
the webpage.Appletviewer is in effect a Java application so it runs using the Java application security manager which by default gives an application almost unlimited access to the machine it runs on.
Running an Applet from a Web page runs the Applet constrained by the Applet security manager. By default, the Applet security manager assumes that anything that is downloaded from the web is untrusted so severely limits what an Applet can do. A signed Applet is assumed to be trusted if the certificate chain points back to one of the certificate roots such as Verisign.
You can use self signing for test purposes and then a client will be asked whether or not he trusts the Applet.
2. How do I make the jar file signed?http://java.sun.com/docs/books/tutorial/jar/sign/signing.html
http://java.sun.com/j2se/1.5.0/docs/tooldocs/solaris/jarsigner.html
http://java.sun.com/developer/onlineTraining/Security/Fundamentals/magercises/Signtool/help.html

Applet Viewer

Greetings,
I just started studying java at my vocational school and i'm studying from a book that was published by The Oracle Online Academy. But anyways, my issue is that inside the book they have a little screen shot of what I should be seeing. They are using an Applet Viewing program instead of the standard Command line utility. I'm looking for the program that is used to view programs. Maybe even a GUI for compiling and viewing. Please reply if you know where I can find either of these utilities.
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I think a little clarification is in order.
There are two kinds of java programs - applets and applications.
Applets are viewed through a html page using either the browser or the "appletviewer" utility
that comes with the jdk.
You cannot run applications with the appletviewer. That's why it is called Appletviewer.
Java applications on the other hand are run through the command line and may or may not
contain a gui - it depends on your program. The whole idea of having a gui to run java applications
defeats its purpose so there aren't any. Java applications - are always run from the command-line
using the "java someprogram" command.
The last thing which you asked for - a gui for compiling and viewing, however, is available. There
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Check out http://www.gExperts.com for a IDE called Gel. Its small and powerful.
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http://java.sun.com/docs/books/tutorial/
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I origionaly posted this on devshed. I got 55 views but no replies. It seems to be a common problem to which no one knows the answer. Surprise me :O)I'm sure this is a really common but there seems to be surprisinly litttle on the web about it.
I developed a game applet a while ago in applet viewer and am now thinking about putting it on my web site. However I have found that it doesn't work in internet explorer. I can browse other sites using Java fine. There is clearly just something about my applet that ie doesn't like.
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PIctures in applet viewer

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