jocl-demos org.eclipse.ui.externaltools.ExternalToolBuilder full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/org.eclipse.jdt.core.javabuilder (2).launch org.eclipse.ui.externaltools.ExternalToolBuilder LaunchConfigHandle <project>/.externalToolBuilders/jocl-demos builder.launch org.eclipse.jdt.core.javanature