src/java.base/share/classes/javax/security/auth/callback/PasswordCallback.java

rev 51919 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: dfuchs, alanb

@@ -65,11 +65,11 @@
      *
      * @exception IllegalArgumentException if {@code prompt} is null or
      *                  if {@code prompt} has a length of 0.
      */
     public PasswordCallback(String prompt, boolean echoOn) {
-        if (prompt == null || prompt.length() == 0)
+        if (prompt == null || prompt.isEmpty())
             throw new IllegalArgumentException();
 
         this.prompt = prompt;
         this.echoOn = echoOn;
     }