Bug 6238 jar packager: ide freezes on page flip, no progress shown
i selected org.eclipse.jdt.ui org.eclipse.jdt.ui.tests.refactoring (couple thousands of files) and opened the jar packager or flipping the page the whole ide froze. and there was no progress report shown. it took more or less 2 minutes - of total freeze - to flip to the other wizard page. i suggest performing it in another thread and showing progress
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarPackageWizardPage.java
private JarPackage fJarPackage;
	private IStructuredSelection fInitialSelection;
	private CheckboxTreeAndListGroup fInputGroup;
	
	private Text	fSourceNameField;	
	private Button	fSourceBrowseButton;
	private Button	fExportClassFilesCheckbox;
	private Button	fExportJavaFilesCheckbox;	
	
	private Combo	fDestinationNamesCombo;
	private Button	fDestinationBrowseButton;