Java Stream

Java Stream is a sequence of elements that supports various operations to perform operations on the data. It is introduced in Java 8 and is used to perform bulk operations on collections of data, such as filtering, mapping, sorting, and reducing. Streams are designed to work with functional programming concepts, such as lambda expressions and method references. They provide a concise and easy-to-read syntax for performing complex operations on collections of data. Streams can be created from various sources such as arrays, lists, and collections, and can also be created dynamically using stream builder. Once a stream is created, operations can be performed on it to transform, filter, or aggregate the data. The two types of operations that can be performed on a stream are intermediate and terminal operations. Intermediate operations return a new stream and allow further operations to be performed on the data. Terminal operations are the final step in the stream pipeline and return a non-stream result, such as a value or a collection. Java Stream provides several built-in methods for performing common operations on collections, such as filter(), map(), flatMap(), reduce(), and collect(). It also supports parallel processing, allowing operations to be performed on multiple elements concurrently to improve performance. Overall, Java Stream provides a powerful and flexible way to work with collections of data, allowing developers to write more concise, readable, and efficient code.