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When I try to run my compiled Java program, I got the following error: Exception in thread “main” java.lang.NoClassDefFoundError:*** What is wrong and how can I fix this?

April 26, 2017compiled Error exception GOT Java main program run Try

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When I try to run my compiled Java program, I got the following error: Exception in thread “main” java.lang.NoClassDefFoundError:*** What is wrong and how can I fix this?

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This is a common error when the CLASSPATH environment variable is not set correctly. Setting it is similar to setting the PATH variable. Go to the Systems program in your Control Panel. Select the Advanced tab and then click on the Environment Variables button. Edit the CLASSPATH variable in Systems variables. Be sure to include the Java library path (e.g. c:\j2sdk\lib where j2sdk is the directory you installed Java2SDK) and the current path (.): .;c:\j2sdk\lib). You are good to go now!