java compile trouble

[Hari Mohanan]

hey guys, i am a newbie in java. While compiling this code(which i wrote to test whether swing's JFrame was working or not so as to add more components) I encountered an error:

Here's the code:
Test class code

public class Test { 
	
	public static void main(String [] args) { 
		
		MarkAnalysis marks = new MarkAnalysis() ;
		marks.DoTheMagic() ;
	
	}
}

MarkAnalysis class code

 
import javax.swing.* ;
import java.awt.* ;

public class MarkAnalysis { 
	
	public void DoTheMagic() {
		
		JFrame frame = new JFrame("::Marks Analysis::") ;
		frame.setSize(800,600) ;
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE) ;
		frame.setVisible(true) ;
	}
}

The error message was :

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Mohan>javac Test.java
Test.java:5: cannot find symbol
symbol : class MarkAnalysis
location: class Test
MarkAnalysis marks = new MarkAnalysis() ;
^
Test.java:5: cannot find symbol
symbol : class MarkAnalysis
location: class Test
MarkAnalysis marks = new MarkAnalysis() ;
^
2 errors

C:\Documents and Settings\Mohan>

Please help me. I am using Windows XP.

[Ulf Dittmer]

Try compiling both in one go: "javac *.java". That will compile all Java files in the current directory.

[nimish kumar]

your Test class should import MarkAnalysis class.

[Rene Larsen]

And maybe add a package to both classes.....

[Prabhakar Reddy Bokka]

This is definitely a classpath issue.

[Campbell Ritchie]

Prabhakar Bokka wrote:This is definitely a classpath issue.

How do you know? It might not be.

Are both those classes in the same folder? What happens when you write "javac MarkAnalysis.java"? And you cannot import a class without a package name, but forget all about package names and imports at this stage.

[Hari Mohanan]

The files are in the same folder. I have tried this before while i was coding a calculator program. There was no problem then. The only change I made was install the newer version of java sdk.

[Rene Larsen]

Do you have a dot (.) in your classpath??

[Hari Mohanan]

Ulf Dittmer wrote:Try compiling both in one go: "javac *.java". That will compile all Java files in the current directory.

It worked: i compiled it together

But the trouble is at execution time now----

C:\Documents and Settings\Mohan>java Test.class
Exception in thread "main" java.lang.NoClassDefFoundError: Test/class
Caused by: java.lang.ClassNotFoundException: Test.class
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: Test.class. Program will exit.

C:\Documents and Settings\Mohan>

[Prabhakar Reddy Bokka]

Then its current directory classpath issue.

Set class path to the currnet directory.

Do you have a dot (.) in your classpath??

set classpath=.;c:\...\jdk\lib;

[Vijitha Kumara]

You don't use .class extension when running a class file. Use "Java Test" instead.

[Hari Mohanan]

Guys!!! I made a very very silly mistake!!!

The part i went wrong in was executing it as :

java Test.class

The .class part was not necessary. I just had to write java Test, and voila I got an 800*600 window!

Thanks a lot...You guys gave me the best help. I'll keep troubling you guys though, cause i am still a novice.

Thanks again.