I have written a jar file using netbeans and uploaded it to my old 1072. When I check the version in netbeans i get jdk 12 When I check the java version on my computer it states the following but i can't seem to update it to version 12 java - version gives me: java version "1.8.0_251" Java...

Found my problem... was using the wrong JDK. Thanks to your guides for helping me fix it.

I am followint the guidelines for compiling my program in java, but keep getting the error message that package com.phidget22 does not exist - my app, as well as phidgets22.jar are located in the same folder - When I use the command 'java -classpath .:phidget22.jar Train.java' I get an error message...