Java 8, the latest release from the Java Community has excited a lot of people around the programming community with its exceptional features and functional programming capabilities. It is definitely a revolutionary release of the world’s no.1 development platform. But what is new in Java 8 and how it affect the way you code?
The Java Development Kit (JDK) 8 is bundled with some really useful and stirring features at the JVM and the language level. It includes features for productivity, ease of use, improved polyglot programming, security and improved performance. Here let’s check out the unique features in Java 8 that will change how you code.
Lambda Expressions: The most dominant feature of Java 8 is the new support for Lambda expressions. This addition to the language brings Java to the forefront of functional programming, right there with other functional JVM-based languages. This feature replaces Anonymous classes and allows you to write code in a much more user friendly and expressive style. It assists in enhancing the integration of third party libraries.
Stream Collection Types: Java 8 introduces Streams API, which is a type of iterator, to bring parallelism to Collections as well as to arrays and other sources. It is possible to use streams to perform functional operations like filer or map/reduce over collections which can be streamed as individual elements using Stream objects. Streams can run sequential or parallel as desired. Java 8 Streams API supports many parallel operations to process the data, while completely abstracting out the low level multithreading logic and letting the developer fully concentrate on the data and the operations to be performed on the data.
New date/time API: Date and time handling in Java is a somewhat tricky part when you are new to the language. Java 8 implemented its own new date / time API from scratch which seems to be very consistent. The new API brings ease-of-use and accuracy long provided by the popular Joda time API into the core Java library. They were designed with simplicity, and clear operations to operate on manipulated values in both human readable and machine time formats.
Functional Interface: The new functional interface in Java 8 contains some default methods which need not be implemented and can run directly from the interface. This helps with existing code – changing interfaces need not make all the classes implementing it implement new methods. This is similar to Traits in Scala and functional interfaces will be compatible with lambdas.
Default Methods: Java 8 introduces Default Methods, a new feature which lets the developer add new methods to the interfaces without disturbing the current implementations of these interfaces.
Apart from the above list, what do you think is the most exciting feature of Java 8?