Replace for loop with enhanced for loop (assertj#2501)

Author: DiegoKrupitza

src/main/java/org/assertj/core/api/ClassBasedNavigableIterableAssert.java

@@ -49,8 +49,7 @@ private <V> ELEMENT_ASSERT buildAssert(V value, String description, Class<?> cla
     try {
       Constructor<?>[] declaredConstructors = assertClass.getDeclaredConstructors();
       // find a matching Assert constructor for E or one of its subclass.
-      for (int i = 0; i < declaredConstructors.length; i++) {
-        Constructor<?> constructor = declaredConstructors[i];
+      for (Constructor<?> constructor : declaredConstructors) {
         if (constructor.getParameterTypes().length == 1 && constructor.getParameterTypes()[0].isAssignableFrom(clazz)) {
           @SuppressWarnings("unchecked")
           ELEMENT_ASSERT newAssert = (ELEMENT_ASSERT) constructor.newInstance(value);

src/main/java/org/assertj/core/presentation/StandardRepresentation.java

@@ -323,8 +323,8 @@ protected boolean hasCustomFormatterFor(Object object) {
    */
   // not static so that it can be overridden
   protected boolean hasAlreadyAnUnambiguousToStringOf(Object obj) {
-    for (int i = 0; i < TYPE_WITH_UNAMBIGUOUS_REPRESENTATION.length; i++) {
-      if (TYPE_WITH_UNAMBIGUOUS_REPRESENTATION[i].isInstance(obj)) return true;
+    for (Class<?> aClass : TYPE_WITH_UNAMBIGUOUS_REPRESENTATION) {
+      if (aClass.isInstance(obj)) return true;
     }
     return false;
   }