David Wismer

Deleting the ClassPath solved the problem!

THANKS!

Grabbed the wrong screen shot when I put the above images together. I have updated the screen shot showing the class and the error.

Yes, I can get the program to compile, just not run.

Can someone help me get past this? I am trying to run Hello World on a Windows XP machine and can not get it to run. It will compile, but not run. Here is the code:

class HelloWorldApp { public static void main(String[] args) { System.out.println("Hello World!"); // Display the string. } }

Here is the Windows CLASSPATH

C:\Program Files\Java\jdk1.6.0_17\bin

Here is the Windows Path

C:\oracle\ora81\bin;C:\oracle\product\10.2.0\db_1\bin;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\Alky for Applications\Libraries\;C:\Program Files\Common Files\Roxio Shared\DLLShared\;C:\Program Files\Common Files\Roxio Shared\10.0\DLLShared\;c:\Program Files\Microsoft SQL Server\90\Tools\binn\;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\VisualSVN\bin;C:\Program Files\Java\jdk1.6.0_17\bin

Here are screen shots of the errors that I get. I have gone to java.com and ran the test to see if Java is working and it is.

Help, almost ready to go back to .Net!

Funny! actually glad to have had this little exercise. Anytime you get a chance to problem solve you learn. Time to turn the page.

How would I edit this code so the Main sub does display the panel?

import java.awt.*; import java.awt.event.*; class Party{ public void buildInvite(){ Frame f=new Frame(); Label l=new Label("Party at Tim's"); Button b=new Button("You bet"); Button c=new Button("Shoot me"); Panel p=new Panel(); p.add(l); } }

Added a Main Sub and the code compiles and does not throw an error when ran, but also does not display anything. FYI, this is the entire code base.

import java.awt.*; import java.awt.event.*; class Party{ public static void main(String arg[]){ Frame f=new Frame(); Label l=new Label("Party at Tim's"); Button b=new Button("You bet"); Button c=new Button("Shoot me"); Panel p=new Panel(); p.add(l); } }

Not that I can see, but since I only have of a couple of hours of experience with Java I could be wrong.

import java.awt.*; import java.awt.event.*; class Party{ public void buildInvite(){ Frame f=new Frame(); Label l=new Label("Party at Tim's"); Button b=new Button("You bet"); Button c=new Button("Shoot me"); Panel p=new Panel(); p.add(l); } //more code here.... }

Found this simple Java code and was able to compile and run it. Seems like Java is working, but still unable to run the Party application in the quick dip section of Head First Java.

/** * The HelloWorldApp class implements an application that * simply prints "Hello World!" to standard output. */ class HelloWorldApp { public static void main(String[] args) { System.out.println("Hello World!"); // Display the string. } }

One step forward. Ran java Party and now getting this error.

I am trying to run the very first java app from the book Head First Java. I can get the app to compile. but when I try and run the app I get this error:

Exception in thread "main" java.lang.NoClassDefFoundError: party <wrong name: Party/class

Several lines of errors then the last line is..

Could not find the main class: party. Program will exit.

I attached a screen shot of the full error and here is the code that I am trying to compile and run.

Thanks for helping a newbie get started!


import java.awt.*; import java.awt.event.*; class Party{ public void buildInvite(){ Frame f=new Frame(); Label l=new Label("Party at Tim's"); Button b=new Button("You bet"); Button c=new Button("Shoot me"); Panel p=new Panel(); p.add(l); } //more code here.... }