src/share/classes/javax/swing/text/DefaultCaret.java

@@ -235,11 +235,11 @@
      * area is the bounding box of the caret (i.e.
      * the caret rectangle or <em>this</em>).
      * <p>
      * This method is thread safe, although most Swing methods
      * are not. Please see
-     * <A HREF="http://docs.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency
+     * <A HREF="https://docs.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency
      * in Swing</A> for more information.
      */
     protected final synchronized void repaint() {
         if (component != null) {
             component.repaint(x, y, width, height);