java installation problem

Sir, i have re installed java in my machine ,cet the PATH in environment variable by putting the bin path.
But it is not installed yet, can you plz tell me what we have to write in PATH AND CLASSPATH after installing java...

when i try to run my first java program it is compiled successfully but show this exception:

Exception in thread "main" java.lang.NoClassDefFoundError: class name

plz fix my problem...

hi omer can u explain it once should i change the class path? if yes what i have to write there??

try setting classpath option when running java program , like this:
java -classpath=. myProgram.java

Sir, i set the PATH in environment variable as C:Program FilesJavajdk1.5.0_03bin ..don't change anything in CLASSPATH and just write the above line in PATH at the end of sequence...

after re installing java i just write this again in PATH but get the same error as mentioned above when try to compile the program.. can u plz help me ?

Hi

java path always set in PATH only not in CLASSPATH.

set the path like
PATH=C:\Program Files\Java\jdk6\bin; and save it in environment variable, than try to compile your program.

java teacher