"Could not find the main class: processing.app.Base. Program will exit."

[processing-bugs]

Original author: scottaha...@gmail.com (June 02, 2011 22:52:43)

processing or arduino will not install on my 64 bit windows 7 machine

Original issue: http://code.google.com/p/processing/issues/detail?id=717

[processing-bugs]

This issue is a duplicate of #176

[processing-bugs]

From murray.m...@gmail.com on November 24, 2011 03:35:51
I'm in the same boat. I am running Ubuntu 11.10 64 bit, and got Processing 1.5.1 from this tarball: http://processing.googlecode.com/files/ ... -linux.tgz.

I am assuming that my problem is somehow 64-bit incompatibility related, because of the "wrong ELF class: ELFCLASS64" error. I'll try replacing the entire processing-1.5.1/java folder with a 64 bit java 1.5.1 distributable, but not tonight.

My error message went like this:
Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/mindwave/processing-1.5.1/java/lib/i386/xawt/libmawt.so: libXtst.so.6: wrong ELF class: ELFCLASS64
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1803)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1699)
at java.lang.Runtime.load0(Runtime.java:770)
at java.lang.System.load(System.java:1003)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1803)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1720)
at java.lang.Runtime.loadLibrary0(Runtime.java:823)
at java.lang.System.loadLibrary(System.java:1028)
at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:50)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.loadLibraries(Toolkit.java:1605)
at java.awt.Toolkit.(Toolkit.java:1627)
at processing.app.Base.(Base.java:445)
Could not find the main class: processing.app.Base. Program will exit.

[processing-bugs]

From mamba2...@gmail.com on November 24, 2011 07:03:17
You only need to create a symbolic link to your 64 bit jdk (assuming you've already got it installed).
In a console cd to the processing folder:-
then mv java to say java_old (or rm -rf java if you are brave)
ln -sfn /opt/jdk1.6.0_29 java

Do not bother developers with this, they've enough to do, this is not a development issue!!! I would prefer the option of expert download like Windows, but clearly most people are not ready for that.

[jecsanjuan]

hello. how do you create a symbolic link? step by step? I am just a newbie in programming and it confused me. Thank you

[benfry]

Please use the forum for question; this is for bug reports and fixes.

[jecsanjuan]

okay. thank you

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.