diff -r 37fe99dfd9e9 -r f5a6e2ed8c7d jdk/src/share/classes/javax/swing/ButtonGroup.java
--- a/jdk/src/share/classes/javax/swing/ButtonGroup.java	Wed Jun 18 17:31:01 2014 +0400
+++ b/jdk/src/share/classes/javax/swing/ButtonGroup.java	Wed Jun 18 17:34:05 2014 +0400
@@ -167,9 +167,11 @@
     }
 
     /**
-     * Returns whether a <code>ButtonModel</code> is selected.
-     * @return <code>true</code> if the button is selected,
-     *   otherwise returns <code>false</code>
+     * Returns whether a {@code ButtonModel} is selected.
+     *
+     * @param m an isntance of {@code ButtonModel}
+     * @return {@code true} if the button is selected,
+     *   otherwise returns {@code false}
      */
     public boolean isSelected(ButtonModel m) {
         return (m == selection);