StreamsExample.java

package com.company;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class StreamsExample {
    public static void main(String[] args) {
        List<String> stringList =
                Arrays.asList("11","2", "3", "2", "2", "6", "11", "3");

        findUniqueUsingForLoopSequential(stringList);
        System.out.println("\n");
        
        stringList.stream().distinct().forEach(distinctString -> System.out.println("Sequentially using Stream is "+distinctString));
        System.out.println("\n");
        
        stringList.parallelStream().distinct().forEach(distinctString -> System.out.println("Parallel using Stream is "+distinctString));
    }

    private static void findUniqueUsingForLoopSequential(List<String> stringList) {
        List<String> uniqueStringList = new ArrayList<>();
        for (String str : stringList){
            if(!uniqueStringList.contains(str)) {
                uniqueStringList.add(str);
                System.out.println("Sequentially using for loop : Unique String in the list is "+str);
            }
        }


    }
}