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“Java Platform, Standard Edition 8 (Java SE 8)” is released on 18th March 2014. Along with the Java SE 8 platform, the product that implements the platform, “Java SE Development Kit 8 (JDK 8)” and “Java SE Runtime Environment 8 (JRE 8)” is also released and available for download.

Java SE 8 was released in early 2014. In java 8, most talked about feature was lambda expressions. It has many other important features as well such as default methods, stream API and new date/time API.

The following list is a highlight of important features, there are other minor enhancements, security features, bug fixes are available as part of Java 8.

1. Lambda Expressions
2. Pipelines and Streams
3. Date and Time API
4. Default Methods
5. Type Annotations
6. Nashorn JavaScript Engine

Lambda Expressions

In Java programming language, a Lambda expression (or function) is just an anonymous function, i.e., a function with no name and without being bound to an identifier.

Lambda expressions give the ability to pass functionality as a method argument. Lambda expression helps us reduce the code clutter in using a single method class.

The basic syntax of a lambda expression is:

either (parameters) -> expression or (parameters) -> { statements; } or () -> expression

Pipelines and Streams

Another major change introduced Java 8 Streams API, which provides a mechanism for processing a set of data in various ways that can include filtering, transformation, or any other way that may be useful to an application.

Pipelines and streams enrich the Java collections framework. Pipeline and streams will make our task easier in accessing the elements from collections and applying operations on it.

Date and Time API

Pre Java 8, date and time-related operations are a little bit cumbersome. JSR 310: Date and Time API give us a brand new package java.time package. This will help in handling date and time operations in an easier way.

Dates

Date the class has even become obsolete. The new classes intended to replace Date class are LocalDate, LocalTime and LocalDateTime.

1.      The LocalDate class represents a date. There is no representation of a time or time-zone.

2.      The LocalTime class represents a time. There is no representation of a date or time-zone.

3.      The LocalDateTime class represents a date-time. There is no representation of a time-zone.

Default Methods

Default methods give the ability to add default implementation for methods in an interface. This is a rocking feature of Java 8. When we implement an interface, if we did not provide an implementation for a method, then the default method will be used in that place.

Type Annotations

Before Java 8 Java annotations can be applied to type declarations. From this Java 8 release onwards, annotations can be applied to type use. Annotations can be applied wherever a type is used like in new instance creates, exception throws clause etc. This will help to enforce stronger type checks.

Nashorn JavaScript Engine

Nashorn is a brand new JavaScript engine provided along with the Java 8 release. Using this we can develop standalone JavaScript applications in Java. Pre Java 8, we got JDK with a JavaScript engine based on Rhino. It is developed from scratch. It will provide better compatibility with ECMA normalized JavaScript specification and better performance than Rhino.

The above list of Java 8 features is just a highlight if you want to learn more than Skillyfy is a way to go, it is the rewound IT Training Institute in Delhi, here you can explore a lot about Java and its Application.

Drop me your questions on this Java 8 tutorial in comments section.

Happy Learning!!