Java: Error message ClassNotFoundException .

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Issue
Solution

Issue

I have installed the latest version of Java (7.21), but it is not working. Upon launching program requiring Java to run, the following error message is displayed:

"ClassNotFoundException ; testJava2_1.TestVMapplet.class".

Solution

Uninstall Java: Read: http://ccm.net/faq/1560-remove-previous-versions-of-java-with-javara
Restart your PC
Run CCleaner as administrator and launch a cleaning procedure.
Download and install Java (Offline): http://www.java.com/en/download/manual.jsp

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