## Simple and Powerful { #simple-and-powerful }

Although the hierarchical dependency injection system is very simple to define and use, it's still very powerful.

You can define dependencies that in turn can define dependencies themselves.

        SingletonContext.getInstance();
        String pkgs = System.getProperty("java.protocol.handler.pkgs");
        if (pkgs == null) {
            System.setProperty("java.protocol.handler.pkgs", "jcifs");
        } else if (pkgs.indexOf("jcifs") == -1) {
            pkgs += "|jcifs";
            System.setProperty("java.protocol.handler.pkgs", pkgs);
        }
    }

    /**
     *

            echo -n "Creating $FESS_GROUP group..."
            addgroup --quiet --system "$FESS_GROUP"
            echo " OK"
        fi

        # Create fess user if not existing
        if ! id $FESS_USER > /dev/null 2>&1 ; then
            echo -n "Creating $FESS_USER user..."
            adduser --quiet \
                    --system \
                    --no-create-home \
                    --ingroup "$FESS_GROUP" \

        if (done) {
          System.out.println("completed");
        } else {
          if (firstUpdate) {
            firstUpdate = false;
            if (contentLength == -1) {
              System.out.println("content-length: unknown");
            } else {
              System.out.format("content-length: %d\n", contentLength);
            }
          }

          System.out.println(bytesRead);

    }

    /**
     * Gets the file system information from the response.
     *
     * @return the filesystem info
     */
    public FileSystemInformation getInfo() {
        return this.info;
    }

    /**
     * Gets the file system information from the response cast to the specified type.
     *
     * @param <T> the type of file system information to return

        int pos = 0;
        System.arraycopy(avFlagsData, 0, fullData, pos, avFlagsData.length);
        pos += avFlagsData.length;
        System.arraycopy(avTimestampData, 0, fullData, pos, avTimestampData.length);
        pos += avTimestampData.length;
        System.arraycopy(avTargetNameData, 0, fullData, pos, avTargetNameData.length);
        pos += avTargetNameData.length;

        if (platformSystemProperty == JDK9_PROPERTY) {
          if (System.getProperty("javax.net.debug") == null) {
            System.setProperty("javax.net.debug", "")
          }
        } else if (platformSystemProperty == CONSCRYPT_PROPERTY) {
          if (Security.getProviders()[0].name != "Conscrypt") {
            if (!Conscrypt.isAvailable()) {
              System.err.println("Warning: Conscrypt not available")
            }

        try {
            ResourceUtil.getResource("hoge", "xml");
            fail("2");
        } catch (final ResourceNotFoundRuntimeException e) {
            System.out.println(e);
            assertEquals("3", "hoge.xml", e.getPath());
        }
        System.out.println(ResourceUtil.getResource("."));
    }

    /**
     * @throws Exception
     */
    public void testGetResourceAsStreamNoException() throws Exception {

        if (done) {
          System.out.println("completed");
        } else {
          if (firstUpdate) {
            firstUpdate = false;
            if (contentLength == -1) {
              System.out.println("content-length: unknown");
            } else {
              System.out.format("content-length: %d\n", contentLength);
            }
          }

          System.out.println(bytesWritten);

      sessionFactory.start();
    }

    HttpUrl authorizeUrl = sessionFactory.newAuthorizeUrl(scopes, team, session -> {
      initOauthSession(session);
      System.out.printf("session granted: %s\n", session);
    });

    System.out.printf("open this URL in a browser: %s\n", authorizeUrl);
  }

  /** Set the OAuth session for this client. */
  public synchronized void initOauthSession(OAuthSession session) {