Comparator<Integer> com=new Comparator<Integer> () { // if we want to sort list with our own logic than we use comparator , comaprable.

Using generics results in more robust code and avoids ClassCastExceptions in your Java programs. This in-depth tutorial introduces you to generics and their types and methods.

The use of the Java Streams API to find duplicates. The use of the frequency method in Java’s Collections class. Brute-force Java duplicate finder A brute-force approach to solve this problem involves ...

Remove duplicates with Java’s Stream API The fastest and most efficient way to remove items from a List in Java is to use the distinct method of the Stream API. The following code snippet starts with ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.