public static void allElementsOfType(Collection collection, Class clazz, String message) {
Validate.notNull(collection);
Validate.notNull(clazz);
for (Iterator it = collection.iterator(); it.hasNext(); ) {
if (clazz.isInstance(it.next()) == false) {
throw new IllegalArgumentException(message);
}
}
}
public static void allElementsOfType(Collection collection, Class clazz) {
Validate.notNull(collection);
Validate.notNull(clazz);
int i = 0;
for (Iterator it = collection.iterator(); it.hasNext(); i++) {
if (clazz.isInstance(it.next()) == false) {
throw new IllegalArgumentException(
"The validated collection contains an element not of type "
+ clazz.getName()
+ " at index: "
+ i);
}
}
}