Help with Eclipse

[jweston]

I've helped our team often with this error. The problem is the plugin hasn't set up the necessary environment variables to tell the project where WPILib jars are.

To fix:
1. Go into Eclipse > Preferences.
2. Go into Java >Build Path >Classpath Variables.
3. Click New.
4. Enter Name: wpilib.
5. Click File... and navigate to <user directory>/wpilib/java/current/lib/WPILib.jar
6. Click OK.
7. Repeat steps 3-6 for:
Name: networktables, <user directory>/wpilib/java/current/lib/NetworkTables.jar
Name: wpilib.sources, <user directory>/wpilib/java/current/lib/WPILib-sources.jar
Name: networktables.sources, <user directory>/wpilib/java/current/lib/NetworkTables-sources.jar

I'm assuming you've installed the WPILib Eclipse plugin. If you haven't, please do so by:
1. Go to menu item Help > Install New Software...
2. Click Add...
3. Enter http://first.wpi.edu/FRC/roborio/release/eclipse/ for Location and click OK.
4. Check the checkbox next to WPILib Robot Development and click Next at the bottom until you finish.

[Peter Johnson]

The easiest solution (after you have the plugins installed) is just to create a new (temporary) Java robot project. You only have to do this once (per computer) and you can delete the temporary project afterwards. Creating the project will prompt you for the team number and set up the necessary wpilib etc Java classpath variables.

[Jayd009]

Originally Posted by jweston

I've helped our team often with this error. The problem is the plugin hasn't set up the necessary environment variables to tell the project where WPILib jars are.

To fix:
1. Go into Eclipse > Preferences.
2. Go into Java >Build Path >Classpath Variables.
3. Click New.
4. Enter Name: wpilib.
5. Click File... and navigate to <user directory>/wpilib/java/current/lib/WPILib.jar
6. Click OK.
7. Repeat steps 3-6 for:
Name: networktables, <user directory>/wpilib/java/current/lib/NetworkTables.jar
Name: wpilib.sources, <user directory>/wpilib/java/current/lib/WPILib-sources.jar
Name: networktables.sources, <user directory>/wpilib/java/current/lib/NetworkTables-sources.jar

I'm assuming you've installed the WPILib Eclipse plugin. If you haven't, please do so by:
1. Go to menu item Help > Install New Software...
2. Click Add...
3. Enter http://first.wpi.edu/FRC/roborio/release/eclipse/ for Location and click OK.
4. Check the checkbox next to WPILib Robot Development and click Next at the bottom until you finish.

That worked perfectly. I'm no longer having the error on any of the computers. Thank you for your help!