How to find duplicates in a Java List The most common approaches to removing duplicates from a List in Java include the following: A brute force comparison using nested loops. The use of a HashSet to ...

Here I am writing a way to implement Hashset. HashSet creates hashtable to store the data. As it implements Set interface so it doesnt contains duplicate elements. It also extends AbstractSet class.

Use a method in the Java Streams API to remove duplicates from a List. Use a HashSet to automatically dedupe the List. Write your own Java algorithm to remove duplicates from a List. Optimize your own ...