The Eclipse Plug-in Development Environment (PDE) is a set of tools built on top of the Eclipse IDE platform that enables developers to create, develop, test, debug, build, and deploy Eclipse plug-ins ...
at org.eclipse.jem.workbench.utility.JavaModelListener.isInClasspath(JavaModelListener.java:367) at org.eclipse.jem.workbench.utility.JavaModelListener.isInClasspath ...