Learn converting between an array of primitives and array of wrapper objects – using iteration, java streams, or apache commons library
A quick tutorial with examples covers various ways to iterate and list files from or directory and list subdirectories of a directory or folder in Java
Learn different techniques to merge or concatenate multiple collections together in Java with the help of practical examples
Examples of initializing mutable and immutable Java ArrayList in the same line using factory method, Stream, Collections, and Arrays
Examples of removing the duplicate elements from a Java List, by using Java Streams API or by using Java Set implementation
Hands on tutorial to write Java Streams Custom Collector and use it on Streams to collect Stream elements.