Problem with displayinh Java Applets

Hi
I've recently downloaded the latest version of Java Plug in and I'm expierencing problems that the applet doesn't load instead I'm getting an "X" on the left hand corner, this happens 95% of the time,any help?
I appreciate your quick response.
Thanks
Abraham

Read the java console... it will typically tell you what's wrong. If you don't understand what you see there, paste it here. If you don't know how to find the java console, search this forum.

Similar Messages

Problem with GUI in applet

Hai to all,
I am having a problem with GUI in applets
My first class extends a JPanel named A_a
import javax.swing .*;
import java.awt.*;
import java.awt.event.*;
public class A_a extends JPanel
JButton jb;
JTextArea text;
public A_a()
setLayout(new FlowLayout());
jb=new JButton("Click me");
//add(jb);
text=new JTextArea(5,20);
add(text);
public void text_appendText(String aa)
System.out.println("I AM IN A_a");
text.append(aa);
text.revalidate();
revalidate();
/*public static void main(String ags[])
A_a a = new A_a();
JFrame frame=new JFrame();
frame.getContentPane().add(a);
frame.pack();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) { System.exit(0); }
frame.setSize(200,200);
frame.show();
and then I am using other class B_b which is an applet carries a exitsing panel (A_a) inside it .
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class B_b extends JApplet
public A_a a;
public void init()
a=new A_a();
getContentPane().add(a);
public void text_appendText(String aa)
final String aaa =aa;
new Thread(new Runnable()
public void run()
a=new A_a();
a.setBackground(new java.awt.Color(255,200,200));
System.out.println("I AM IN B_b");
a.text.append(aaa);
a.text.revalidate();
getContentPane().remove(a);
resize(500,500);
}).start();
and the I am using the second applet C_c in which by performing a button action the old panel A_a should get removed and replace the new panel D_a (which is not here )in the applet B_b with all other components(namely button , text fields etc)
import javax.swing .*;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.*;
public class C_c extends JApplet implements ActionListener
JButton jbt;
JTextArea jta;
public void init()
getContentPane().setLayout(new FlowLayout());
jbt=new JButton("Click me");
jbt.addActionListener(this);
getContentPane().add(jbt);
jta=new JTextArea(5,20);
getContentPane().add(jta);
public void actionPerformed(ActionEvent ae)
Enumeration e = getAppletContext().getApplets();
Applet applets = null;
while(e.hasMoreElements())
applets=(Applet)e.nextElement();
if ( applets instanceof B_b)
System.out.println("I AM CLASS C_c");
((B_b)applets).text_appendText(jta.getText());
((B_b)applets).remove());
((B_b)applets).getContentPane().add(D_d);
both the applets C_c and B_b are in same browser page
How can i achive that pls help .

Just to make the code readable...
import javax.swing .*;
import java.awt.*;
import java.awt.event.*;
public class A_a extends JPanel
JButton jb;
JTextArea text;
public A_a()
setLayout(new FlowLayout());
jb=new JButton("Click me");
//add(jb);
text=new JTextArea(5,20);
add(text);
public void text_appendText(String aa)
System.out.println("I AM IN A_a");
text.append(aa);
text.revalidate();
revalidate();
/*public static void main(String ags[])
A_a a = new A_a();
JFrame frame=new JFrame();
frame.getContentPane().add(a);
frame.pack();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) { System.exit(0); }
frame.setSize(200,200);
frame.show();
}and then I am using other class B_b which is an applet carries a exitsing panel (A_a) inside it .
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class B_b extends JApplet
public A_a a;
public void init()
a=new A_a();
getContentPane().add(a);
public void text_appendText(String aa)
final String aaa =aa;
new Thread(new Runnable()
public void run()
a=new A_a();
a.setBackground(new java.awt.Color(255,200,200));
System.out.println("I AM IN B_b");
a.text.append(aaa);
a.text.revalidate();
getContentPane().remove(a);
resize(500,500);
}).start();
}and the I am using the second applet C_c in which by performing a button action the old panel A_a should get removed and replace the new panel D_a (which is not here )in the applet B_b with all other components(namely button , text fields etc)
import javax.swing .*;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.*;
public class C_c extends JApplet implements ActionListener
JButton jbt;
JTextArea jta;
public void init()
getContentPane().setLayout(new FlowLayout());
jbt=new JButton("Click me");
jbt.addActionListener(this);
getContentPane().add(jbt);
jta=new JTextArea(5,20);
getContentPane().add(jta);
public void actionPerformed(ActionEvent ae)
Enumeration e = getAppletContext().getApplets();
Applet applets = null;
while(e.hasMoreElements())
applets=(Applet)e.nextElement();
if ( applets instanceof B_b)
System.out.println("I AM CLASS C_c");
((B_b)applets).text_appendText(jta.getText());
((B_b)applets).remove());
((B_b)applets).getContentPane().add(D_d);
}

Problem with a signed applet and a user machine.

Hello. I´m having some problems with a signed applet with some dependences.
In one particular computer the applet doesn´t load.
The java version installed in that computer is 1.6.0_25.
The invocation tag:
<applet name=applet id="applet" code=Applet/RequestApplet.class width=155 height=21 archive="RequestApplet.jar " MAYSCRIPT>
   <param id="parametro1" name="usuario" value="<Computed Value>">
</applet>The RequestApplet.jar and dependences:
   bcmail-jdk13-145.jar(signed by bouncy castle), jce-ext-jdk13-145.jar(signed by bouncy castle), AbsoluteLayout.jar, plugin.jar, RequestApplet.jar(signed by me)*this files are all in the same folder.
The requestApplet.jar manifest:
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.7.1
X-COMMENT: Main-Class will be added automatically by build
Class-Path: bcmail-jdk13-145.jar jce-ext-jdk13-145.jar plugin.jar Abso
luteLayout.jar
Created-By: 10.0-b23 (Sun Microsystems Inc.)
Main-Class: Applet.RequestApplet
Name: Applet/ResponseApplet$1.class
SHA1-Digest: fO5IPiwEH3OhvlprhBecmMIAVJI=
Name: Applet/NewJApplet.class
SHA1-Digest: 6XSpm7lQEQRi39TegoUYv2aFJrk=
Name: Applet/ResponseApplet.class
SHA1-Digest: v1EbKUFB+QdvO05xx8UzAMNIyRs=
Name: Applet/ResponseApplet$4.class
SHA1-Digest: XH4I67psXZTelpz0AMAYc/Ej8QY=
Name: Applet/RequestApplet$1.class
SHA1-Digest: KAP5sAC4Thv/6GClkFAdGUVzgYA=
Name: Applet/ResponseApplet$5.class
SHA1-Digest: CVPnKrW2SgNEkRzYnVnQe3KGrIU=
Name: Applet/ResponseApplet$3.class
SHA1-Digest: SjfW1k1K7BA9m3AxmHi+jvRE+9o=
Name: Applet/ResponseApplet$2.class
SHA1-Digest: 3Pu18CZMLuEh7/n3y7XxFSkuNQY=
Name: Applet/RequestApplet.class
SHA1-Digest: Tky85es5+o371adetH9XVEI2Z+o=The error:
java.lang.RuntimeException: java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
     at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
     at java.lang.Class.getDeclaredConstructors0(Native Method)
     at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
     at java.lang.Class.getConstructor0(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$12.run(Unknown Source)
     at java.awt.event.InvocationEvent.dispatch(Unknown Source)
     at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
     at java.awt.EventQueue.access$000(Unknown Source)
     at java.awt.EventQueue$1.run(Unknown Source)
     at java.awt.EventQueue$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.bouncycastle.jce.provider.BouncyCastleProvider
     at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     ... 20 more

Thanks. I´ll try with your tips. But if i put all the dependences in archive I get this error.
The tag:
<applet name=applet id="applet" CODEBASE="." code="Applet/RequestApplet.class" width=155 height=21 archive="bcmail-jdk13-145.jar, jce-ext-jdk13-145.jar, AbsoluteLayout.jar, plugin.jar, RequestApplet.jar " MAYSCRIPT>
   <param id="parametro1" name="usuario" value="<Computed Value>">
</applet>The error:
Java Plug-in 1.6.0_25
Usar versión JRE 1.6.0_25-b06 Java HotSpot(TM) Client VM
Directorio local del usuario = C:\Documents and Settings\Administrator
c:   borrar ventana de consola
f:   finalizar objetos en la cola de finalización
g:   liberación de recursos
h:   presentar este mensaje de ayuda
l:   volcar lista del cargador de clases
m:   imprimir sintaxis de memoria
o:   activar registro
q:   ocultar consola
r:   recargar configuración de norma
s:   volcar propiedades del sistema y de despliegue
t:   volcar lista de subprocesos
v:   volcar pila de subprocesos
x:   borrar antememoria del cargador de clases
0-5: establecer nivel de rastreo en <n>
basic: Receptor de progreso agregado: sun.plugin.util.GrayBoxPainter$GrayBoxProgressListener@f39b3a
basic: Plugin2ClassLoader.addURL parent called for http://desarrollo.isaltda.com.uy/CertReq.nsf/bcmail-jdk13-145.jar
basic: Plugin2ClassLoader.addURL parent called for http://desarrollo.isaltda.com.uy/CertReq.nsf/jce-ext-jdk13-145.jar
basic: Plugin2ClassLoader.addURL parent called for http://desarrollo.isaltda.com.uy/CertReq.nsf/AbsoluteLayout.jar
basic: Plugin2ClassLoader.addURL parent called for http://desarrollo.isaltda.com.uy/CertReq.nsf/plugin.jar
basic: Plugin2ClassLoader.addURL parent called for http://desarrollo.isaltda.com.uy/CertReq.nsf/RequestApplet.jar

Problem with focus on applet - jvm1.6

Hi,
I have a problem with focus on applet in html page with tag object using jvm 1.6.
focus on applet work fine when moving with tab in a IEbrowser page with applet executed with jvm 1.5_10 or sup, but the same don't work with jvm1.6 or jvm 1.5 with plugin1.6.
with jvm 1.5 it's possible to move focus on elements of IEbrowser page and enter and exit to applet.
i execut the same applet with the same jvm, but after installation of plugin 1.6, when applet gain focus don't release it.
instead if i execute the same applet with jvm 1.6, applet can't gain focus and manage keyevent, all keyevent are intercepted from browser page.
(you can find an example on: http://www.vista.it/ita_vista_0311_video_streaming_accessibile_demo.php)
Any idea?
Thanks

Hi piotrek1130sw,
From what you have described, I think the best approach would be to restore the original IDT driver, restart the computer, test that driver, then install the driver update, and test the outcome of installing the newest driver.
Use the following link for instructions to recovery the ITD driver using Recovery Manager. Restoring applications and drivers.
Once the driver is restored, restart the computer and test the audio. If the audio is good you can continue to use this driver, or you can reinstall the update and see what happens. IDT High-Definition (HD) Audio Driver.
If installing the newest driver causes the issue to occur but the recovered driver worked, I suggest recovering again.
If neither driver works I will gladly follow up and provide any assistance I can.
Please let me know the outcome.
Please click the Thumbs up icon below to thank me for responding.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
Sunshyn2005 - I work on behalf of HP

Solution Manager systems RAM requirements - problems with the Java Engine

Hello,
I am about to install SAP Solution Manager 7 on a WIndows 2003 Server x64 but I need to know what the RAM requirements are? I have been having problems with the Java Engine starting and it seems to time out, I have heard that this is a very RAM hungry process and it might be why?
Many thanks for your help in advance,
Omar

Hello Omar,
To size SAP Solution Manager 7.0 EHP1 we recommend to use the SAP Solution Manager Quicksizer Tool at:
http://service.sap.com/sizing-solman
Here you find information on how to use the tool, how to collect input data for E2E Scenario Sizing, on SAP E2E RCA Sizing, Introscope Tuning, Wily Enterprise Manager Cluster Setup for E2E RCA Scenario and BI Aggregation Strategy in E2E Scenario.
Please find more information about installing Solution Manager in:
http://service.sap.com/instguides -> SAP Solution Manager
I hope this information helps.
Thanks,
Mark

I am having trouble with my JAVA Applet. It isn't functioning on SAFARI. It seems to have stopped working and I used it on SAFARI last year. Any suggestions ?

I am having trouble with my JAVA Applet. It isn't functioning on SAFARI. It seems to have stopped working and I used it on SAFARI last year. Any suggestions?

Post in the Safari forum area.

JCoIDoc IDocLibrary 3.0.2 Problems with IDocServerExample.java

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com.sap.conn.jco.JCoException: (102) RFC_ERROR_COMMUNICATION: Unable to get repository at com.sap.conn.jco.rt.DefaultServer.update(DefaultServer.java:136) at com.sap.conn.jco.rt.DefaultServer.(DefaultServer.java:105) at com.sap.conn.idoc.jco.DefaultJCoIDocServer.(DefaultJCoIDocServer.java:35) at com.sap.conn.idoc.jco.DefaultJCoIDocServerFactory.createServer(DefaultJCoIDocServerFactory.java:17) at com.sap.conn.idoc.jco.DefaultJCoIDocServerFactory.createServer(DefaultJCoIDocServerFactory.java:13) at com.sap.conn.jco.rt.DefaultServerManager.getServer(DefaultServerManager.java:108) at com.sap.conn.jco.rt.StandaloneServerFactory.getServerInstance(StandaloneServerFactory.java:170) at com.sap.conn.idoc.jco.JCoIDoc.getServer(JCoIDoc.java:78) at com.sap.conn.idoc.examples.IDocServerExample.main(IDocServerExample.java:18) Caused by: com.sap.conn.jco.JCoException: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connection parameters: TYPE=B DEST=JCOSERVER01 MSHOST=arm115tx GROUP=PUBLIC R3NAME=T01 PCS=1 LOCATION CPIC (TCP/IP) on local host rz1462 with Unicode ERROR service '?' unknown TIME Tue Jul 07 09:09:40 200 RELEASE 711 COMPONENT NI (network interface) VERSION 39 RC -3 DETAIL NiErrSet COUNTER 2 at com.sap.conn.jco.rt.MiddlewareJavaRfc.generateJCoException(MiddlewareJavaRfc.java:615) at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcClient.connect(MiddlewareJavaRfc.java:1280) at com.sap.conn.jco.rt.ClientConnection.connect(ClientConnection.java:661) at com.sap.conn.jco.rt.PoolingFactory.init(PoolingFactory.java:103) at com.sap.conn.jco.rt.ConnectionManager.createFactory(ConnectionManager.java:171) at com.sap.conn.jco.rt.DefaultConnectionManager.createFactory(DefaultConnectionManager.java:44) at com.sap.conn.jco.rt.ConnectionManager.getFactory(ConnectionManager.java:160) at com.sap.conn.jco.rt.RfcDestination.initialize(RfcDestination.java:789) at com.sap.conn.jco.rt.RfcDestination.getSystemID(RfcDestination.java:817) at com.sap.conn.jco.rt.RepositoryManager.getRepository(RepositoryManager.java:32) at com.sap.conn.jco.rt.RfcDestination.getRepository(RfcDestination.java:891) at com.sap.conn.jco.rt.DefaultServer.update(DefaultServer.java:132) ... 8 more Caused by: RfcException: [null] message: Connect to message server host failed Connection parameters: TYPE=B DEST=JCOSERVER01 MSHOST=arm115tx GROUP=PUBLIC R3NAME=T01 PCS=1 LOCATION CPIC (TCP/IP) on local host rz1462 with Unicode ERROR service '?' unknown TIME Tue Jul 07 09:09:40 200 RELEASE 711 COMPONENT NI (network interface) VERSION 39 RC -3 DETAIL NiErrSet COUNTER 2 Return code: RFC_FAILURE(1) error group: 102 key: RFC_ERROR_COMMUNICATION at com.sap.conn.rfc.engine.RfcIoControl.error_end(RfcIoControl.java:255) at com.sap.conn.rfc.engine.RfcIoControl.ab_rfcopen(RfcIoControl.java:94) at com.sap.conn.rfc.api.RfcApi.RfcOpen(RfcApi.java:83) at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcClient.connect(MiddlewareJavaRfc.java:1273) ... 18 more
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Im having the same issue here. Has anyone found a solution to this?

Problems with $HOME/.java.policy

hi,
i'm using suse linux 7.3 & jdk 1.4.
i have a simple test applet that prints the user name. i signed it by:
cprokt@linux:~/java/applets/uname> jarsigner -signedjar strapp.jar trapp.jar cprokt
Enter Passphrase for keystore: dubel07
cprokt@linux:~/java/applets/uname> jarsigner -verify strapp.jar
jar verified.then i created the java policy file /home/cprokt/.java.policy
keystore "/home/cprokt/.keystore";
grant SignedBy "cprokt"
permission java.util.PropertyPermission "user.name", "read";
};Running this applet with appletviewer resulted in a AccessControlException which said:
java.security.AccessControlException: access denied (java.util.PropertyPermission user.name read)I got the same result when I ran the applet with Konqueror (blackdown vm 1.3).

It's not neccessary to have a .java.policy file if you sign the applet. I run my applets (intranet only) with a policy file alone, without signing them. The only drawback to the policy file security is that it will have to be deployed to your users, this does not work in the internet, who's going to accept your policy file, but it's not so bad in an intranet. If you sign the applet succesfully, by default you'll get "all permissions" and getting the user name should not be a problem.
Hope this helps...

Problem with accessing Signed Applet from javascript method

Hi,
I am facing the following problem while accessing Signed Applet from javascript method.
java.security.AccessControlException: access denied (java.io.FilePermission c:/temp.txt read)
     at java.security.AccessControlContext.checkPermission(Unknown Source)
     at java.security.AccessController.checkPermission(Unknown Source)
     at FileTest.testPerm(FileTest.java:19)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at sun.plugin.javascript.invoke.JSInvoke.invoke(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at sun.plugin.javascript.JSClassLoader.invoke(Unknown Source)
     at sun.plugin.com.MethodDispatcher.invoke(Unknown Source)
     at sun.plugin.com.DispatchImpl.invokeImpl(Unknown Source)
     at sun.plugin.com.DispatchImpl$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.plugin.com.DispatchImpl.invoke(Unknown Source)
I am using jdk1.5 for my development...
Can anyone help to resolve this security issue. Urgent...
Thanks in advance.

Hey thanks. I wasn't able to get it to work with that sample but I did find this very similar code that does allow javascript to call JFileChooser in an applets public method.
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction()
public Object run(){
//do your special code here
return null; //return whatever you want
It seems a bit tempermental in that if you don't select a file quickly, it will hang the browser....no perfect solution but I'm going in the right direction.
Thanks,
Scott

Performance problems with new Java Tiger style recommendations

Performance problems with jdk 1.5 on Linux plattform
(not tested on Windows, might be the same)
using the new style recommendations.
I need fast Vector loops for high speed mathematical calculations, some
hints about the fastest way to program that loop would be also great!
After refactoring using the new features from java 1.5 (as recommended from
SUN) I lost performance significantly:
using a vector:
public Vector<unit> units;
The new code (recommended from SUN for Java Tiger for redesign):
for (unit u: units) u.accumulate();
runs more than 30% slower than the old code:
for (int i = 0; i < units.size(); i++) units.elementAt(i).accumulate();
I expected the opposite.
Is there any information available that helps?
The following additional information I got from Mr. Shankar Unni:
I got some fairly anomalous results comparing ArrayList and Vector: for the
1.5-style loops, ArrayList was faster then Vector, but for a loop with get()
calls, Vector was faster. Vector was even faster than that using
elementAt(), which was a surprise:
For a million summing iterations over a 100-element array:
vector elementAt loop took 3446 ms.
vector get loop took 3796 ms.
vector iterator loop took 5469 ms.
arraylist get loop took 4136 ms.
arraylist iterator loop took 4668 ms.

If your topic doesn't change, please stay in your original post.

Problems with a java bean in Weblogic 5.1

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          I have been given a .class and a .jar file for a java bean (not an EJB). I
          placed the .class file into e:\temp\WEB-INF\classes and added the following
          line to my weblogic.properties file:
          weblogic.httpd.webApp.testApp=e:/temp/
          I have also updated the web.xml file in the WEB-INF directory as follows:
          <?xml version="1.0" encoding="UTF-8"?>
          <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web
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          "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
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          <servlet>
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          <jsp-file>test.jsp</jsp-file>
          </servlet>
          <servlet-mapping>
          <servlet-name>EdIface</servlet-name>
          <url-pattern>EdIface</url-pattern>
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          </web-app>
          When I try to access my http:\\server:port\testApp\test I get an "Error
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          .jar file? Where should I put the .jar file?
          I appreciate any advice!


Bump

Problem Running a java applet from an HTML page

I can run my applet at the command prompt with:
appletviewer coffee.html
But when I try and open the Coffee.html by opening
the page in Internet Explorer I get the following message:
Can't find Database driver class: java.lang.ClassNotFoundException: sun.jdbc.odbc.JdbcOdbcDriver
Code: createcoffees.java
import java.applet.*;
import java.sql.*;
public class CreateCoffees extends Applet{
     public void init() {
          Statement stmt;
          Connection con;
          try {Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
          } catch(java.lang.ClassNotFoundException e) {
               System.err.print("ClassNotFoundException: ");
               System.err.println(e.getMessage());
          try {con = DriverManager.getConnection("jdbc:odbc:hq","afm", "afm");
               stmt = con.createStatement();
                      stmt.executeQuery("SELECT * FROM RM");
               stmt.close();
               con.close();
          } catch(SQLException ex) {
               System.err.println("SQLException: " + ex.getMessage());
}

Is your jdbc-odbc driver properly loaded? Its very clear that its a class not found exception which is thrown by this:
try {Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
} catch(java.lang.ClassNotFoundException e) {
System.err.print("ClassNotFoundException: ");
System.err.println(e.getMessage());

A problem with my Java Scrabble game

Hello
I am making a Java Scrabble game for a school assignment and I have a problem with the following:
The number of players is input by the user (2 to 4) and i need to create a number of arrays based on the number of players. These arrays must have 7 playing pieces at all times until the "bag" of pieces has less pieces than those required to replace the ones a certain player just used (in wich case the bag would give that player all of it's remaining pieces and, from this point on, the player arrays would not necessarily need to have 7 pieces).
this is my procedure to take a piece from the bag:
     public Piece takePiece()
          if (this.pieceCounter > 0) {
               Arrays.sort(this.pieces, 0, this.pieceCounter);
               int i = this.generator.nextInt(this.pieceCounter);
               Piece p = this.pieces;
               this.pieceCounter--;
               this.pieces[i] = this.pieces[this.pieceCounter];
               return p;
          else
               return null;
this is my Piece class:
public class Piece implements Comparable {
     private int scorePiece;
     private char letterPiece;
     public Piece(char letterPiece, int scorePiece)
          this.scorePiece = scorePiece;
          this.letterPiece = letterPiece;
     public int scorePiece()
          return scorePiece;
     public String letterPiece()
          return letterPiece();
     public String toString()
          return letterPiece+ " " + scorePiece;
     public int compareTo(Object a)
          Piece piece= (Piece) a;
          return (int) letterPiece - (int) piece.letterPiece;
}Thanks in advance for your help

Ok, if i create a Players class and do this in Main class:
     if(nPlayers >= 2 && nPlayers <= 4)
          Players arrayPlayers[];
          arrayPlayers= new Players [nPlayers ];
          for(int i=0 ; i < nPlayers ; i++)
                   arrayPlayers[i] = new Players ();
          }My Players Class should contain something like this:
         // Array of 7 that contains Pieces...
     Piece[] pieces= new Piece[7];how can i get pieces from takePiece(); (Class Bag) and put them in the pieces arrays until takePiece(); returns null?

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