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

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

@@ -246,11 +246,11 @@
             options == null || options.length == 0 ||
             defaultOption < 0 || defaultOption >= options.length)
             throw new IllegalArgumentException();
 
         for (int i = 0; i < options.length; i++) {
-            if (options[i] == null || options[i].length() == 0)
+            if (options[i] == null || options[i].isEmpty())
                 throw new IllegalArgumentException();
         }
 
         this.messageType = messageType;
         this.options = options;

@@ -292,11 +292,11 @@
      *                  {@code optionType}.
      */
     public ConfirmationCallback(String prompt, int messageType,
                 int optionType, int defaultOption) {
 
-        if (prompt == null || prompt.length() == 0 ||
+        if (prompt == null || prompt.isEmpty() ||
             messageType < INFORMATION || messageType > ERROR ||
             optionType < YES_NO_OPTION || optionType > OK_CANCEL_OPTION)
             throw new IllegalArgumentException();
 
         switch (optionType) {

@@ -355,18 +355,18 @@
      *                  {@code options}.
      */
     public ConfirmationCallback(String prompt, int messageType,
                 String[] options, int defaultOption) {
 
-        if (prompt == null || prompt.length() == 0 ||
+        if (prompt == null || prompt.isEmpty() ||
             messageType < INFORMATION || messageType > ERROR ||
             options == null || options.length == 0 ||
             defaultOption < 0 || defaultOption >= options.length)
             throw new IllegalArgumentException();
 
         for (int i = 0; i < options.length; i++) {
-            if (options[i] == null || options[i].length() == 0)
+            if (options[i] == null || options[i].isEmpty())
                 throw new IllegalArgumentException();
         }
 
         this.prompt = prompt;
         this.messageType = messageType;