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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

Lookup, a NetBeans fundamental

What's a Lookup? It is a general registry permitting clients to find instances of services (implementation of a given interface). To put it another way, it is a mechanism by which we can publish various artifacts, and other parts of the system can look up these artifacts by a key (either a Class or a Lookup.Template, which we'll not discuss here), with no coupling between the modules.

This is often used, as we'll see, to look up the implementations of a service interface. Do you recall earlier when I mentioned that often we see APIs defined in one module and implementations in another? This is where that comes in especially handy. Suppose you're developing an API to retrieve photos from an online service (which ...

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Publisher Resources

ISBN: 9781788832823Supplemental ContentOtherPurchase LinkErrata Page