ArrayList contains case sensitivity

Question

I am currently using the contains method belonging to the ArrayList class for making a search. Is there a way to make this search case insensitive in java? I found that in C

Answer 1

Another solution:

public class IgnorecaseList extends ArrayList{

    @Override
    public boolean contains(Object o) {
        return indexOf(o) >= 0;
    } 

    @Override
    public int indexOf(Object o) {
        if(o instanceof String){
            for (int i = 0; i < this.size(); i++) {
                if(((String)o).equalsIgnoreCase(get(i))){
                    return i;
                }
            }
        }
        return -1;
    }
}

contains() method uses indexOf... In this sollution you can also know in where position is the string. list.add("a") -> list.indexOf("A") == 0 or list.indexOf("a") == 0 ..

You should also consider using a Set instead of List.