Java 2 SDK downloaded fine, but wont work

Hi - I'm new to Java and downloaded jsdk1.4.2 yesterday. However, if i try and launch jave.exe or javac.exe both command prompt windows open, but only for about 2-3 seconds before closing, before my being able to use them? Does anyone know why this is happening?
Cheers George

Try here.
http://java.sun.com/docs/books/tutorial/getStarted/cupojava/win32.html
You have to use java.exe and javac.exe from a command prompt. It sounds like you are trying to run them by double-clicking on them.

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