Java applet error: "Blocked Exception"

**kinkita** · July 10th, 2013, 03:50 PM

HI everyone! It has been a while now, but I have encountered a problem testing Java applets.

The error I'm getting is "Blocked Exception" as you can see and I realy have no clue why. here's my code:
html site:

 
<html>
<head>
    <meta http-equiv="Content-Type" content"text/html; charset=utf-8">
</head>
<body>
<applet archive="JavaDisseroappTest.jar"
    width="809" height="500" code="JavaDisseroappTest.class">
</applet>
</body>
</html>

Java code:

package javadisseroapptest;
import java.awt.*;
 
 
 
public class JavaDisseroappTest extends javax.swing.JApplet{
 
    public void init(){
 
    }
 
 
 
public void paint(Graphics g){
    Graphics2D g2D = (Graphics2D) g;
    g.setColor(Color.RED);
    g.fillRect(0, 0, 809, 500);
    g.setColor(Color.WHITE);
    g.drawString("THIS IS JUST A TEST FOR THE DISSERO PROJECT :< ", 25, 25);
}
}

Thanks in advance!

**Norm** · July 11th, 2013, 07:01 AM

Can you copy the full text of the error messages and paste it here.

Thread moved to applets area from android area

The code= attribute should have the full class name which includes the package name:
code=javadisseroapptest.JavaDisseroappTest

**kinkita** · July 11th, 2013, 01:56 PM

UPDTAE (I tried to fix it, created new files etc, so here are the current files/errors):

HTML:

<script src="http://www.java.com/js/deployJava.js"></script>
<script>
    var attributes = {
        code:'introductapplets.IntroductApplets.class',
    width:700, height:500} ;
    var parameters = {}; // does the Applet take parameters?
    var version = '1.6' ; // does the Applet require a minimum version of Java
    deployJava.runApplet(attributes, parameters, version);
</script>

JAVA:

package javapplettest;
import javax.swing.JApplet;
import java.awt.*;
import javax.swing.*;
import javax.swing.JButton;
 
 
 
public class JAvAppletTest extends JApplet{
 
 
    public void init(){
        GuiButton gui = new GuiButton();
        add(gui);
           }
 
 
 
 
 
 
 
 
 
}

Can you copy the full text of the error messages and paste it here.

Do you mean this(from the java console):

Java Plug-in 10.25.2.17
Använder JRE-version 1.7.0_25-b17 Java HotSpot(TM) Client VM
Användarens hemkatalog = C:\Users\MyNAME
----------------------------------------------------
c: rensa konsolfönster
f: slutför objekt i slutförandekö
g: skräpinsamling
h: visa det här hjälpmeddelandet
l: dumpa klassladdarlista
m: skriv ut minnesförbrukning
o: triggerloggning
q: dölj konsol
r: ladda policykonfiguration igen
s: dumpa system- och distributionsegenskaper
t: dumpa trådlista
v: dumpa trådstack
x: rensa klassladdarcache
0-5: ange spårningsnivån till <n>
----------------------------------------------------

Everything is in swedish though :1

**Norm** · July 11th, 2013, 02:10 PM

What program reads the <script> statements?
Where is the reference to the applet class that is supposed to execute?

What command are you using to execute the applet?

BTW the .class at the end is not part of the class name. .class would be the extension for the filename.

**kinkita** · July 11th, 2013, 06:14 PM

I followed a random tutorial (yeah, I'm was kind of desperate. I don't even remember the site but I think it was sun) which stated that the preferable way to launch applets was with javascript. I did what they told me. I probably needed my own javascript but I didn't know how to and the code yielded the same result so I thought it didn't matter, gave up and created the previous post :/

**Norm** · July 11th, 2013, 07:00 PM

Try using the html in the first post with the correct classname and with the class file in the folder with the package name. The html file should be in the same folder that the package folder is in.

**kinkita** · July 12th, 2013, 12:41 PM

I keep getting a "BlockedException", but I think I have everything set up.

I have a folder which contains:
1. the java package (now named javapplettest)
2. the jar named JAvAppletTest
3. the html site with the code:

<html>
<head>
    <meta http-equiv="Content-Type" content"text/html; charset=utf-8">
</head>
<body>
<applet archive="JAvAppletTest.jar"
    width="809" height="500" code="javapplettest.JAvAppletTest.class">
</applet>
</body>
</html>

and the java package folder contains:
1. JAvAppletTest.class
2. another subclass which isn't important now I think. Since it will be executed by the JAvAppletTest class.

At first, when I tried to see if it worked, it actually displayed a java logo sign which dissepeared quickly and gave me the error "ClockedException".

This html file contains: "applet archive="JAvAppletTest.jar" " but is it really neccisary to give the .jar file when the browser is only going to use the class files? I assume.

Maybe it's a problem with my computer, though I doubt that since I can run other applets, but I'm clueless as usual:S

**Norm** · July 12th, 2013, 01:11 PM

code="javapplettest.JAvAppletTest.class"

A java class name does NOT end with .class.

What is the contents of the browser's java console when you load the html file into the browser?

s it really neccisary to give the .jar file when the browser is only going to use the class files?

For distribution, it is better to have all the class files in a jar file.
For testing the class files can be outside of a jar file and you would not use the archive= attribute when testing if the files were not in a jar file.

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