IT Blog, Java Development,

Java 8 Gives You 5 Chances for Better Coding

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QArea Expert
QArea Expert Marketing Manager
April 1, 2014
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java8Java 8 presents a full pack of language level, JVM and compiler features which are really exciting. Among these are 5 must-use features for every developer.

Here are they.

1. Lambda expressions

For developers, the most important feature in Java 8 is the new Lambda expressions’ support. It’s recommended, at minimum, you get familiar with Lambda’s syntax, particularly at the point where it relates to collection and array operations as Lambdas are tightly integrated in core language libraries. This feature is very likely to help you see more in both your company’s and third party’s code.

2. JavaScript implementation

The new release has introduced an absolutely new JavaScript JVM engine – Nashorn. The engine makes the unique use of several newly introduced Java 7 features like invokeDynamic to boost JVM-level speed of JavaScript execution. Thus, the next time when you try to integrate JS in your backend, rather than setting up the node.js instance, you are to simply use your JVM for code execution. The added bonus is that now you are able to get seamless interoperability between the Java and JavaScript in-process code without having to implement different IPC/RPC methods for bridging the gap.

5. Concurrent accumulators

Updating the numeric counters accessed over multiple threads is among the most common concurrent programming scenarios. To address it, Java 8 offers a framework level solution – the newly introduced concurrent accumulator classes which enable the efficient increase and decrease of a counter’s value in a thread-secure manner. This case is really not the matter of preference and taste as using the new classes in code is actually a no-brainer.

3. Parallel operations

Lambda expressions added to arrays operations have introduced a key principle in the internal iteration language. It can be viewed as some extension of iterators in which an iterator actually extracts each next item from the collection to operate on. This design pattern has opened an exciting possibility to enable operations performed on long arrays like mapping, filtering and sorting to be performed by the framework in parallel.

4. New date and time APIs

The complexity of native Java library’s current API has caused pain for many Java developers for years. Joda time used to fill this vacuum, but now Java 8 has implemented its newly designed date and time API from the scratch. A good news for developers is that these new APIs are designed with utter simplicity in mind and clear operations to perform on manipulated values both in machine and human readable time formats.

Check these features in Java 8 and use them to raise your code quality.

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