Bug 13269 Incorrect operation order in jarpackager
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarFileExportOperation.java
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.ui.jarpackager.IJarDescriptionWriter;
import org.eclipse.jdt.ui.jarpackager.IJarExportRunnable;
import org.eclipse.jdt.ui.jarpackager.JarPackageData;
import org.eclipse.jdt.ui.jarpackager.JarWriter;
import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.JavaStatusConstants;
import org.eclipse.jdt.internal.ui.util.BusyIndicatorRunnableContext;
/**
 * Operation for exporting a resource and its children to a new  JAR file.
 */
public class JarFileExportOperation implements IJarExportRunnable {
	private static class MessageMultiStatus extends MultiStatus {
		MessageMultiStatus(String pluginId, int code, String message, Throwable exception) {
			super(pluginId, code, message, exception);
		}
		/*
		 * allows to change the message
		 */
		protected void setMessage(String message) {
			super.setMessage(message);
		}
	}
	private static final String COMPILER_SOURCE_FILE_ATTR = "org.eclipse.jdt.core.compiler.debug.sourceFile"; 
	private JarWriter fJarWriter;
	private JarPackageData fJarPackage;
	private JarPackageData[] fJarPackages;