# Dependencies { #dependencies }

**FastAPI** has a very powerful but intuitive **<abbr title="also known as components, resources, providers, services, injectables">Dependency Injection</abbr>** system.

It is designed to be very simple to use, and to make it very easy for any developer to integrate other components with **FastAPI**.

## What is "Dependency Injection" { #what-is-dependency-injection }

@GwtCompatible
@SuppressWarnings("AvoidObjectArrays")
public final class ObjectArrays {

  private ObjectArrays() {}

  /**
   * Returns a new array of the given length with the specified component type.
   *
   * @param type the component type
   * @param length the length of the new array
   */
  @GwtIncompatible // Array.newInstance(Class, int)
  @SuppressWarnings("unchecked")

At first, it didn't have an automatic API documentation web UI, but I knew I could add Swagger UI to it.

It had a dependency injection system. It required pre-registration of components, as other tools discussed above. But still, it was a great feature.

(b).height(),h=a(b).scrollTop(),i=parseInt(this.$element.parents().filter(function(){return"auto"!==a(this).css("z-index")}).first().css("z-index"),10)+10,j=this.component?this.component.parent().offset():this.$element.offset(),k=this.component?this.component.outerHeight(!0):this.$element.outerHeight(!1),l=this.component?this.component.outerWidth(!0):this.$element.outerWidth(!1),m=j.left,n=j.top;this.$widget.removeClass("timepicker-orient-top timepicker-orient-bottom timepicker-orient-right time...

    String getFullUNCPath();

    /**
     * Sets the path to the resource.
     *
     * @param path the path to set
     */
    void setPath(String path);

    /**
     * Sets the full UNC path components.
     *
     * @param domain the domain name
     * @param server the server name
     * @param fullPath the full UNC path
     */
    void setFullUNCPath(String domain, String server, String fullPath);

    /**

- 🚀 [React](https://react.dev) para el frontend.
    - 💃 Usando TypeScript, hooks, [Vite](https://vitejs.dev), y otras partes de una stack moderna de frontend.
    - 🎨 [Chakra UI](https://chakra-ui.com) para los componentes del frontend.
    - 🤖 Un cliente de frontend generado automáticamente.
    - 🧪 [Playwright](https://playwright.dev) para pruebas End-to-End.
    - 🦇 Soporte para modo oscuro.

- 🚀 [React](https://react.dev) for the frontend.
    - 💃 Using TypeScript, hooks, [Vite](https://vitejs.dev), and other parts of a modern frontend stack.
    - 🎨 [Chakra UI](https://chakra-ui.com) for the frontend components.
    - 🤖 An automatically generated frontend client.
    - 🧪 [Playwright](https://playwright.dev) for End-to-End testing.
    - 🦇 Dark mode support.

import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Indicates that annotated component should be instantiated before session execution starts
 * and discarded after session execution completes.
 * <p>
 * A {@code org.apache.maven.api.Session} object is available in the scope of this annotation.
 *

     */
    public void healthy() {}

    /**
     * Called when the all of the component services have reached a terminal state, either
     * {@linkplain State#TERMINATED terminated} or {@linkplain State#FAILED failed}.
     */
    public void stopped() {}

    /**
     * Called when a component service has {@linkplain State#FAILED failed}.
     *
     * @param service The service that failed.
     */

 * specific language governing permissions and limitations
 * under the License.
 */

/**
 * Provides a caching infrastructure for Maven requests and their results.
 * <p>
 * This package contains the core components for implementing and managing caches in Maven:
 * <ul>
 *   <li>{@link org.apache.maven.api.cache.RequestCache} - The main interface for caching request results</li>