Java JVM Verison Question

[timtrust123]

Hi
I'm new to java and have been writing a new java based application. No parts of the application require version 1.5 or greater. I have used version 1.5 and the application works well on my PC. However when I try to run it on a different pc that has version 1.42_09 I get an error message "Could not find the main class".
Does this mean that 1.5.0_06 has to be installed on all PC that need to run my new application? Also , can more than one JVM exist on a single pc ??

I'm confused.. It was all going so well up to this point.

Any help appreciated
Cheers
Tim

 

[timw]

If you've compiled your application with 1.5, then you'll need a 1.5 version jvm on all machines needing to run it. You can have several versions of Java on a single PC.

Tim

 

[stefanwagner]

If you don't use 1.5 features, you may compile it with

 javac -source 1.4 -target 1.4 YourClass.java

, but the message "Could not find the main class" means, java doesn't find the class containing 'main'.

A directory/classpath problem.

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