Why do java not work?

[Niels Koomans]

Exception in thread "main" java.lang.NoClassDefFoundError: showversion
Caused by: java.lang.ClassNotFoundException: showversion
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: showversion. Program will exit.

I get this error everytime i want to check te version of java, i use java JDK + JRE 1.6.0_45 so i can i build Android with it!

How can i fix this?

[Luuk]

Try:

java -version

or, if you are actually running some code:

java -showversion somecode.class

[Niels Koomans]

I tried that but i still get the error, i use cygwin ( latest version) on windows 8.1 and i want to build Android KitKat

[Nepomuk]

You're on Windows 8.1 and still use Java 1.6? That's an odd combination; you should update to 1.7 if possible.

Also, please tell us the command you're using and which results in the above error. It's no good if we have to guess.

[Niels Koomans]

I use the command 'make' to make a android build, but for that i need java 1.6 jdk + jre, it doesn't support java 1.7 JDK + JRE.

[itsraghz]

Hi,

You yourself have an answer. If you are specifically looking for a different version of JRE, directly download it from http://oracle.com.

However, as far as any software is concerned (not just Java), whatever you are able do to with version x, should definitely be doable with version x+1.

[Nepomuk]

I'm guessing you're following these instructions, right? Have you initialized the build and chosen a target? And I also assume you've followed all steps under Initializing the Build Environment, right?