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Java 9: Building Robust Modular Applications
book

Java 9: Building Robust Modular Applications

by Dr. Edward Lavieri, Peter Verhas, Jason Lee
April 2018
Intermediate to advanced content levelIntermediate to advanced
910 pages
33h 21m
English
Packt Publishing
Content preview from Java 9: Building Robust Modular Applications

Local-Variable Type Inference

As we have seen countless times in this book alone, when you declare a variable in Java, you have to declare the type twice, once on the left-hand and once on the right-hand side, plus a variable name:

    AtomicInteger atomicInt = new AtomicInteger(42); 

The problem here is that this code is verbose and repetitive. The Local-Variable Type Inference effort hopes to fix that, enabling something like this:

    var atomicInt = new AtomicInteger(42); 

This code is more concise, making it more readable. Notice the addition of the val keyword. Typically, the compiler knows that a line of code, for example, is a variable declaration when it sees <type> <name> = .... Since the effort would remove the need for a type on the ...

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Publisher Resources

ISBN: 9781788832823Supplemental ContentOtherPurchase LinkErrata Page