src/share/classes/javax/swing/tree/DefaultMutableTreeNode.java

@@ -34,11 +34,11 @@
 /**
  * A <code>DefaultMutableTreeNode</code> is a general-purpose node in a tree data
  * structure.
  * For examples of using default mutable tree nodes, see
  * <a
- href="http://docs.oracle.com/javase/tutorial/uiswing/components/tree.html">How to Use Trees</a>
+ href="https://docs.oracle.com/javase/tutorial/uiswing/components/tree.html">How to Use Trees</a>
  * in <em>The Java Tutorial.</em>
  *
  * <p>
  *
  * A tree node may have at most one parent and 0 or more children.