How do I get distinct element from list in java

Question

Hey, I just want to remove repeated element from my list how do I do that?

Answer 1

import java.util.*;

public class SetE

{

    public static void main(String[] args)

    {

        // Set deonstration using HashSet

        Set<String> hash_Set = new HashSet<String>();

        hash_Set.add("Goat");

        hash_Set.add("For");

        hash_Set.add("Goat");

        hash_Set.add("Example");

        hash_Set.add("Set");


        System.out.print("Set output without the duplicates");

  

        System.out.println(hash_Set);

  


}

}

I think this code can help you out .

Thank you

Answer 2

You should use a Set. it doesn't contain duplicates.

If you have a List that contains duplicates, you can get the unique entries like this:

List<String> gasList = // create list with duplicates...
Set<String> uniqueGas = new HashSet<String>(gasList);
System.out.println("Unique gas count: " + uniqueGas.size());