Javax inject which jar

Package javax. This process, known as dependency injection , is beneficial to most nontrivial applications. Many types depend on other types. For example, a Stopwatch might depend on a TimeSource. The types on which a type depends are known as its dependencies.

The process of finding an instance of a dependency to use at run time is known as resolving the dependency. If no such instance can be found, the dependency is said to be unsatisfied , and the application is broken. In the absence of dependency injection, an object can resolve its dependencies in a few ways. Constructors are more concise but restrictive.

Factories decouple the client and implementation to some extent but require boilerplate code. Service locators decouple even further but reduce compile time type safety. All three approaches inhibit unit testing.

Tests that mock out and clean up after multiple dependencies quickly get out of hand. To make matters worse, a programmer must predict accurately how much flexibility will be needed in the future or else suffer the consequences. If a programmer initially elects to use a constructor but later decides that more flexibility is required, the programmer must replace every call to the constructor. If the programmer errs on the side of caution and write factories up front, it may result in a lot of unnecessary boilerplate code, adding noise, complexity, and error-proneness.

Dependency injection addresses all of these issues. In unit tests, the programmer can now construct objects directly without an injector and pass in mock dependencies. Take our short survey. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Where I can find Inject jar Ask Question.

Asked 11 years ago. Active 3 years, 4 months ago. Viewed 48k times. Adi Sembiring Adi Sembiring 5, 12 12 gold badges 56 56 silver badges 70 70 bronze badges. Add a comment.

Active Oldest Votes. Sean Patrick Floyd Sean Patrick Floyd k 60 60 gold badges silver badges bronze badges. Using javaee-api instead of javax. Alfabravo 7, 6 6 gold badges 43 43 silver badges 78 78 bronze badges.

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