Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

Method references in Java are part of the broader set of features introduced and enhanced in Java 8 and beyond. They are a concise way to refer to methods of classes or objects.

The Object class is the parent class of all the classes in java by default. In other words, it is the topmost class of java. The Object class is beneficial if you want to refer any object whose type ...

Use a HashSet to automatically dedupe the List. Write your own Java algorithm to remove duplicates from a List. Optimize your own algorithms with standard Java classes. Remove duplicates with Java’s ...

Another approach to find duplicates in a Java list is to use the frequency method of the Collections class. This example prints out the number of times each unique element in the List occurs, which is ...