fUseSourceFoldersCheckbox.setEnabled(fJarPackage.areJavaFilesExported() && !fJarPackage.areClassFilesExported());
fUseSourceFoldersCheckbox.setEnabled(fJarPackage.areJavaFilesExported() && !fJarPackage.areGeneratedFilesExported());
	protected void updateWidgetEnablements() {		boolean saveDescription= fSaveDescriptionCheckbox.getSelection();		fDescriptionFileGroup.setEnabled(saveDescription);		fDescriptionFileBrowseButton.setEnabled(saveDescription);		fDescriptionFileText.setEnabled(saveDescription);		fDescriptionFileLabel.setEnabled(saveDescription);				boolean exportClassFiles= fJarPackage.areClassFilesExported();		fExportWarningsCheckbox.setEnabled(exportClassFiles);		fExportErrorsCheckbox.setEnabled(exportClassFiles);				boolean isAutobuilding= ResourcesPlugin.getWorkspace().isAutoBuilding();		fBuildIfNeededCheckbox.setEnabled(exportClassFiles && !isAutobuilding);				fUseSourceFoldersCheckbox.setEnabled(fJarPackage.areJavaFilesExported() && !fJarPackage.areClassFilesExported());			}