Java Stream API for Bulk Data Operations on Collections; Java Time API; Collection API improvements; Concurrency API improvements; Java IO improvements; Miscellaneous Core API improvements; Let’s have a brief look on these Java 8 features. I will provide some code snippets for better understanding, so if you want to run programs in Java 8, you will have to setup Java 8 environment by following steps.
Particularly offensive to me is the fact that Stream does not implement Iterable (despite actually having method iterator) and cannot be used in a for-each, only with a forEach(). I recommend casting Streams into Iterables with (Iterable<T>)stream::iterator.
Java uses the concept of stream to make I/O operation fast. The java.io package contains all the classes required for input and output operations. We can perform file handling in java by Java I/O API. Stream. A stream is a sequence of data.In Java a stream is composed of bytes.