Bug 35543 Export Jar takes forever [jar creation]
The "Saving Files..." part of the Export Jar wizard takes several minutes. This could be because the jar I am rebuilding in on my classpath... I do not know since the feedback only says "Saving Files...". So, perhaps only better feedback is needed if e is recompiling my project. Version: 2.1.0 Build id: 200303202147
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarFileExportOperation.java
else {
			outputContainer= createFolderHandle(outputPath);
			if (outputContainer == null || !outputContainer.isAccessible()) {
				String msg= JarPackagerMessages.getString("JarFileExportOperation.outputContainerNotAccessible"); 
				throw new CoreException(new Status(IStatus.ERROR, JavaPlugin.getPluginId(), IJavaStatusConstants.INTERNAL_ERROR, msg, null));
			}
		}
		
		boolean hasErrors= hasCompileErrors(file);
		boolean hasWarnings= hasCompileWarnings(file);
		boolean canBeExported= canBeExported(hasErrors, hasWarnings);
		if (!canBeExported)
			return Collections.EMPTY_LIST.iterator();
		reportPossibleCompileProblems(file, hasErrors, hasWarnings, canBeExported);
		IContainer classContainer= outputContainer;
		if (pathInJar.segmentCount() > 1)
			classContainer= outputContainer.getFolder(pathInJar.removeLastSegments(1));
			
		if (fExportedClassContainers.contains(classContainer))
			return Collections.EMPTY_LIST.iterator();
			
		if (fClassFilesMapContainer == null || !fClassFilesMapContainer.equals(classContainer)) {
			fJavaNameToClassFilesMap= buildJavaToClassMap(classContainer);
			if (fJavaNameToClassFilesMap == null) {
				
				IPath location= classContainer.getLocation();
				String containerName= "";  
				if (location != null)
					containerName= location.toFile().toString();
				String msg= JarPackagerMessages.getFormattedString("JarFileExportOperation.missingSourceFileAttributeExportedAll", containerName);