Processing generated image by La Térmica, Malaga
How to install Processing 3 in Ubuntu 14.04
06/12/2015 by J. Pérez de Lama
It took me a little while to find out, so here is a little straight forward tutorial
(1) Check if you have Java (prerequisite) either search for openjdk-7-jre in the software center, or type in a terminal to install it:
sudo apt-get install openjdk-7-jre
(2) Download Processing (in my case it’s Linux-64 bit) into the Downloads folder from https://processing.org/download/?processing
The file name for Linux64-bit is: processing-3.0.1-linux64.tgz
* You need to pay attention in future Processing versions to type the right file name in the terminal commands below. Here the name of the decompressed file becomes processing-3.0.1
(3) Decompress (extract) tgz file in the Downloads folder by double clicking on it.
Now open a terminal and go on:
(4) Relocate Processing into the System Folder. First change permissions:
sudo su -c «chown -R root:root Downloads/processing-3.0.1»
(5) Then move from Downloads to /opt folder:
sudo su -c «mv Downloads/processing-3.0.1 /opt/processing»
(6) Add Processing to Ubuntu Path
sudo su -c «ln -s /opt/processing/processing /usr/local/bin/processing»
(7) To run Processing type in terminal:
processing
Thanks to: https://www.youtube.com/watch?v=aO3aDJTVooU
Arquitectura contable 
Hola. Seguí todos los pasos pero al ejecutar me pone el siguiente mensaje de error. ¿Saben que puede ser?
Exception in thread «main» java.lang.UnsupportedClassVersionError: processing/app/Base : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:643)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
Could not find the main class: processing.app.Base. Program will exit.
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Hmmm… No soy muy experto a este nivel… Comprueba el primer paso: si tienes instalada la versión necesaria de Java… Suerte! O igual reinstalarla si ya la tuvieras…
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He estado un rato intentando la instalación sin resultado, hasta que he cambiado las comillas por las que vienen encima de la tecla del número 2 y he cambiado Downloads por Descargas
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