Check ArrayList for instance of object

Question

I have a java method that should check through an ArrayList and check if it contains an instance of a given class. I need to pass the method the type of class to check for a

Answer 1

You can iterator over your list and test each element

Class zz = String.class;
for (Object obj : list) {
    if (zz.isInstance(obj)) {
        System.out.println("Yes it is a string");
    }
}

Note that isInstance also captures subclasses. Otherwise see Bela`s answer.