Bug 7914 Cannot copy a Java project in the packages view
There is no way to copy a Java project in the packages view. You can copy a project in the Navigator. This is a functional gap.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/reorg/ReorgDestinationAction.java
import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.dialogs.ListSelectionDialog;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.ui.JavaElementContentProvider;
import org.eclipse.jdt.ui.JavaElementLabelProvider;
import org.eclipse.jdt.internal.corext.refactoring.Assert;
import org.eclipse.jdt.internal.corext.refactoring.reorg.ReorgRefactoring;
import org.eclipse.jdt.internal.corext.refactoring.reorg.ReorgUtils;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.JavaUIException;
import org.eclipse.jdt.internal.ui.actions.StructuredSelectionProvider;
import org.eclipse.jdt.internal.ui.dialogs.ElementTreeSelectionDialog;
import org.eclipse.jdt.internal.ui.dialogs.ISelectionValidator;
import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
import org.eclipse.jdt.internal.ui.javaeditor.EditorUtility;
import org.eclipse.jdt.internal.ui.packageview.PackageFilter;
import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
import org.eclipse.jdt.internal.ui.viewsupport.JavaElementSorter;
import org.eclipse.jdt.internal.ui.viewsupport.ListContentProvider;
abstract class ReorgDestinationAction extends ReorgAction {