delete duplicates in java arraylist

Question

Thanks Marko. I rewrite the code. try to make it simple. this time it can really compile. but it can only delete duplicate items sit next to each other. for example, if i put in

Answer 1

To answer the question "delete duplicates in java arraylist":

Just put all elements into a Set and you're done.

-or-

Iterate your original list and add the elements to a List, but before adding them, check with List#contains() if the element is already there.

EDIT: Try this:

String[] original = input.split(" ");
List finalList = new ArrayList();

for (String s : original) {
    if (!finalList.contains(s)) {
        finalList.add(s);
    }
}

System.out.println("\nHere is the set list:");
displayList(finalList);
System.out.println("\n");