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    <p>As others have already answered, you can simply use <code>@Inject Injector</code> because Guice defines the binding itself.</p> <p>Normally you only need one <code>Injector</code> in your app, and a static variable is an even easier way to store and access a singleton than injecting it. In our web app, we use <a href="http://code.google.com/p/stripes-guicer/" rel="nofollow noreferrer">stripes-guicer</a> and get the <code>Injector</code> from its static method <code>GuiceInjectorFactory.getInjector()</code> when we need it (in our Hibernate interceptor, for example).</p> <p>I'm a little baffled by the advice that "you shouldn't use Injector directly." How else would I get an instance injected except by calling <code>injector.getInstance()</code> or <code>injector.injectMembers()</code>? There is no way. Yes, you can define Provider methods, but they will never be called unless somewhere, something uses an Injector. Yes, there are modules that use the <code>Injector</code> for you like the <a href="https://github.com/google/guice/wiki/ServletModule" rel="nofollow noreferrer">ServletModule</a>; you have to create the <code>Injector</code> yourself, but you can leave it to the <code>ServletModule</code> after that.</p> <p>So in some circumstances, you can avoid using the <code>Injector</code> directly, but that doesn't mean you "shouldn't" use it. If you're using Guice alone without any optional modules, then you "should" be using an <code>Injector</code> all over the place because there's no other way to trigger injection. (I think developers who spend all day writing code inside frameworks sometimes forget that some people actually instantiate their own objects.)</p>
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    1. POHow to inject Injector?
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    1. USDavid Noha
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    1. COI am not convinced you have understood the rationale behind Guice. It explictly aims to avoid using static fields and state, and you should only very rarely make a direct reference to the Injector itself. You get instances injected by declaring dependencies with @Inject, rather than calling `getInstance()` on the injector.
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    2. COMy only point (which I made rather verbosely) is that you have to start somewhere; it's a chicken-and-egg problem. You can't *only* decorate methods with @Inject and expect anything to happen. Something, somewhere, must call injector.getInstance() or injector.injectMembers() to start it all off.
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      1. USDavid Noha
 

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