fixed Javadoc problems
diff --git a/org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/launcher/AbstractJavaMainTab.java b/org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/launcher/AbstractJavaMainTab.java
index 0142476..7aef556 100644
--- a/org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/launcher/AbstractJavaMainTab.java
+++ b/org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/launcher/AbstractJavaMainTab.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2005, 2011 IBM Corporation and others.
+ * Copyright (c) 2005, 2013 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -83,7 +83,7 @@
 	
 	/**
 	 * chooses a project for the type of java launch config that it is
-	 * @return
+	 * @return the selected project or <code>null</code> if none
 	 */
 	private IJavaProject chooseJavaProject() {
 		ILabelProvider labelProvider= new JavaElementLabelProvider(JavaElementLabelProvider.SHOW_DEFAULT);
diff --git a/org.eclipse.jdt.launching/launching/org/eclipse/jdt/launching/ILibraryLocationResolver.java b/org.eclipse.jdt.launching/launching/org/eclipse/jdt/launching/ILibraryLocationResolver.java
index b74818e..5dc75cf 100644
--- a/org.eclipse.jdt.launching/launching/org/eclipse/jdt/launching/ILibraryLocationResolver.java
+++ b/org.eclipse.jdt.launching/launching/org/eclipse/jdt/launching/ILibraryLocationResolver.java
@@ -36,7 +36,7 @@
 	 * For example, if the source for <code>java.lang.Object</code> source is found at <code>src/java/lang/Object.java</code> in the zip file, the package root 
 	 * would be <code>src</code>.
 	 * 
-	 * @param the path to the library
+	 * @param libraryPath the path to the library
 	 * @return the {@link IPath} to the root of the source or the empty path, never <code>null</code>
 	 */
 	public IPath getPackageRoot(IPath libraryPath);