Using the Processing
libraries: CLASSPATH
In order to use the Processing libraries from Java, your Java
tools need to be able to find the Processing libraries (the
.jar files).
The Java tools read the CLASSPATH environment
variable, which contains a list of folders and .jar files in which
to search for class definitions.
Mac / Linux
On Mac, the default installation location for Processing is
/Applications. In this case, you want to set your
CLASSPATH with the following command:
export CLASSPATH=.:/Applications/Processing.app/Contents/app/*Note that the CLASSPATH value is a list of file
paths separated by colons, starting with . so that the
Java tools find the classes in your current directory.
To check your CLASSPATH value:
echo $CLASSPATHOn Linux (or Mac with a different installation location), adjust the command accordingly.
The environment variable will disappear when you close your
console window. In order to set your CLASSPATH
automatically when you open a new console window, include the
export CLASSPATH command in your .zshrc
(or .bashrc) file in your home directory.
Windows
On Windows, you still want to include the path to your Processing
installation .jar files in your CLASSPATH,
but the syntax is slightly different:
set CLASSPATH=.;C:\Users\drkessner\path\to\processing-4.x.x\core\library\*Note that file paths are separated by semicolons, rather than colons.
To check your CLASSPATH value:
echo %CLASSPATH%To set the CLASSPATH automatically for all new
console windows, you can add or edit the CLASSPATH
environment variable in the system settings.