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

rev 52979 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: TBD

*** 65,75 ****
       *
       * @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)
              throw new IllegalArgumentException();
  
          this.prompt = prompt;
          this.echoOn = echoOn;
      }
--- 65,75 ----
       *
       * @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.isEmpty())
              throw new IllegalArgumentException();
  
          this.prompt = prompt;
          this.echoOn = echoOn;
      }