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

From what you're saying it sounds like when you run your assignment you are not setting your classpath correctly so that it includes the compiled class file of the SetListType. You should be able to fix this by setting the -classpath option when running your main method to point to this and any other classes your assignment relies on.