java 8 list eliminate duplicates code example

Example 1: java remove duplicates

import java.util.*;

public class RemoveDuplicatesFromArrayList {

    public static void main(String[] args) {
        List numbers = Arrays.asList(1,2,2,2,3,5);

        System.out.println(numbers);

        Set hashSet = new LinkedHashSet(numbers);
        ArrayList removedDuplicates = new ArrayList(hashSet);

        System.out.println(removedDuplicates);
    }
}

Example 2: compare two lists and remove duplicates java

listA.removeAll(new HashSet(listB));