StringIndexOutOfBoundsException on Windows 10

[jefft0]

On Windows 10 with openjdk 11, running any of the applications gives the error:

StringIndexOutOfBoundsException: begin 0, end 3, length 2

This comes from a known bug inside the library code for PApplet at this line:

javaVersion = new Float(javaVersionName.substring(0, 3));

It expects the system property "java.version" to be at least length 3, for example "11.0". But in this version of openjdk it is actually something like "11".

A solution: At the beginning of the main() method for any application that uses PApplet, add:

if (System.getProperty("java.version").length() < 3)
  System.setProperty("java.version", System.getProperty("java.version") + ".0");

More details are here: processing/processing#5275