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Join Date: Jul 2005
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Newbie Poster
Hey guys here are my Environmental Variable settings same problem as most of you compiles fine but same error at runtime
CLASSPATH C:\j2dk\lib\comm.jar;C:\j2dk\lib\tools.jar;
also tried %classpath%;C:\j2dk\lib\comm.jar;C:\j2dk\lib\tools.jar;
PATH C:\j2dk\bin
tried moving .class file to C:\j2dk\bin but still no joy at runtime
Thank you in advance
Brian
CLASSPATH C:\j2dk\lib\comm.jar;C:\j2dk\lib\tools.jar;
also tried %classpath%;C:\j2dk\lib\comm.jar;C:\j2dk\lib\tools.jar;
PATH C:\j2dk\bin
tried moving .class file to C:\j2dk\bin but still no joy at runtime
Thank you in advance
Brian
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Join Date: Jun 2005
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Newbie Poster
Try this (I have no idea why it works):
For Classpath: type a period, and only a period. Really - it works!
For Classpath: type a period, and only a period. Really - it works!
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Join Date: Nov 2004
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Posting Whiz in Training
hi
i had this error i think twice. once the footpath wasnt set properly and the other time i compiled a class with no main.
so check for these two,
:mrgreen:
i had this error i think twice. once the footpath wasnt set properly and the other time i compiled a class with no main.
so check for these two,
:mrgreen: •
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Join Date: Nov 2004
Location: Netherlands
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you should NEVER EVER put classes or jars from the JDK installation in your classpath.
It's not needed and can cause problems.
You SHOULD put the current directory ('.') in there or else pass it as a classpath to the java compiler and runtime always.
If you still get a NoClassDefFoundError you're missing something on your classpath, which will pretty much always be a library you need for some import or other.
It's not needed and can cause problems.
You SHOULD put the current directory ('.') in there or else pass it as a classpath to the java compiler and runtime always.
If you still get a NoClassDefFoundError you're missing something on your classpath, which will pretty much always be a library you need for some import or other.
42 Private messages asking for help will be ignored
In the frozen land of Nador they were forced to eat Steve's iMinstrels, and there was much rejoicing.
In the frozen land of Nador they were forced to eat Steve's iMinstrels, and there was much rejoicing.
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Join Date: Jun 2004
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Originally Posted by jwenting
you should NEVER EVER put classes or jars from the JDK installation in your classpath.
It's not needed and can cause problems.
You SHOULD put the current directory ('.') in there or else pass it as a classpath to the java compiler and runtime always.
If you still get a NoClassDefFoundError you're missing something on your classpath, which will pretty much always be a library you need for some import or other.
You should have said something earlier before I led these people on for 40 posts!!!
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Join Date: Jul 2005
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Newbie Poster
To remove all doubt on this issue I said I'd post the following link I found.
http://www.cs.ucsb.edu/~teliot/Path_and_Classpath.htm
It gives a retard proof(well it did work for me) guide to how to properly configure the environmental variables when installing java.
enjoy.
http://www.cs.ucsb.edu/~teliot/Path_and_Classpath.htm
It gives a retard proof(well it did work for me) guide to how to properly configure the environmental variables when installing java.
enjoy.
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Join Date: Nov 2004
Location: Netherlands
Posts: 5,700
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It also has some serious errors...
1) you don't need to restart your computer when you're running XP, NT, or Win2K.
2) you should set JAVA_HOME and refer to that in your path instead of the full installation directory. Many applications expect JAVA_HOME to be set and it also makes upgrading a lot easier
3) of course the actual directory to set depends on the exact JDK version you're using and where you install it.
But apart from that it's a nice checklist
1) you don't need to restart your computer when you're running XP, NT, or Win2K.
2) you should set JAVA_HOME and refer to that in your path instead of the full installation directory. Many applications expect JAVA_HOME to be set and it also makes upgrading a lot easier
3) of course the actual directory to set depends on the exact JDK version you're using and where you install it.
But apart from that it's a nice checklist
42 Private messages asking for help will be ignored
In the frozen land of Nador they were forced to eat Steve's iMinstrels, and there was much rejoicing.
In the frozen land of Nador they were forced to eat Steve's iMinstrels, and there was much rejoicing.
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Join Date: Jul 2005
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Newbie Poster
Hi,
Just try to set the classpath in the path of the folder where u r trying to compile.
Just try by setting the classpath in the command prompt
C:\xyz\234>set classpath =%classpath%;.;
and then execute the class again there
C:\xyz\234>java brian
Just try to set the classpath in the path of the folder where u r trying to compile.
Just try by setting the classpath in the command prompt
C:\xyz\234>set classpath =%classpath%;.;
and then execute the class again there
C:\xyz\234>java brian
techy :)
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Join Date: Oct 2005
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Newbie Poster
Assuming you are using J2SDK you the class files for lang etc., are in the tools.jar file. You therefore need to add this file to your CLASSPATH.
E.g.,
.;c:\j2sdk1.4.1_02\bin;c:\j2sdk1.4.1_02\lib;c:\j2sdk1.4.1_02\lib\tools.jar
Simply replace j2sdk1.4.1_02 with whichever SDK you are using. Search for the tools.jar file if you are unsure where to look.
E.g.,
.;c:\j2sdk1.4.1_02\bin;c:\j2sdk1.4.1_02\lib;c:\j2sdk1.4.1_02\lib\tools.jar
Simply replace j2sdk1.4.1_02 with whichever SDK you are using. Search for the tools.jar file if you are unsure where to look.
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