int index = k & mask;
          if (tables[i][index] == null) {
            tables[i][index] = o;
            break;
          }
        }
      }
    }
  }

  enum Impl {
    EXHAUSTIVE {
      int maxRunBeforeFallback(int tableSize) {
        return 12 * IntMath.log2(tableSize, RoundingMode.UNNECESSARY);
      }

      @Override

 * @see <a
 *      href="https://en.wikipedia.org/wiki/Octet_%28computing%29">https://en.wikipedia.org/wiki/Octet_(computing)</a>
 */
public class FileSizeFormat {
    public enum ScaleUnit {
        BYTE {
            @Override
            public long bytes() {
                return 1L;
            }

            @Override
            public String symbol() {

        @Override
        public Lock get() {
          return new ReentrantLock();
        }
      };

  @Param({"2", "8", "64", "1024", "65536"})
  int numStripes;

  @Param Impl impl;

  enum Impl {
    EAGER {
      @Override
      Striped<Lock> get(int stripes) {
        return Striped.lock(stripes);
      }
    },
    LAZY_SMALL {
      @Override
      Striped<Lock> get(int stripes) {

        @Override
        public Lock get() {
          return new ReentrantLock();
        }
      };

  @Param({"2", "8", "64", "1024", "65536"})
  int numStripes;

  @Param Impl impl;

  enum Impl {
    EAGER {
      @Override
      Striped<Lock> get(int stripes) {
        return Striped.lock(stripes);
      }
    },
    LAZY_SMALL {
      @Override
      Striped<Lock> get(int stripes) {

 */
@Deprecated(since = "4.0.0")
public interface SettingsProblem {

    /**
     * The different severity levels for a problem, in decreasing order.
     */
    enum Severity {
        FATAL, //
        ERROR, //
        WARNING //
    }

    /**
     * Gets the hint about the source of the problem. While the syntax of this hint is unspecified and depends on the

import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

class Graph {
    private enum DfsState {
        VISITING,
        VISITED
    }

    final Map<String, Vertex> vertices = new LinkedHashMap<>();

    public Vertex getVertex(String id) {
        return vertices.get(id);
    }

namespace tensorflow {

// Abstract interface to a Tensor handle in either tracing or immediate
// execution mode.
class AbstractTensorHandle : public core::RefCounted {
 protected:
  enum AbstractTensorHandleKind { kGraph, kMlir, kEager, kTfrt, kCustomDevice };
  explicit AbstractTensorHandle(AbstractTensorHandleKind kind) : kind_(kind) {}
  ~AbstractTensorHandle() override {}

 public:

        : SetTestSuiteBuilder.using(keySetGenerator);
  }

  /**
   * To avoid infinite recursion, test suites with these marker features won't have derived suites
   * created for them.
   */
  enum NoRecurse implements Feature<@Nullable Void> {
    SUBMAP,
    DESCENDING;

    @Override
    public Set<Feature<? super @Nullable Void>> getImpliedFeatures() {
      return emptySet();
    }
  }

<img src="/img/tutorial/path-operation-configuration/image01.png">

### Tags com Enums

Se você tem uma grande aplicação, você pode acabar acumulando **várias tags**, e você gostaria de ter certeza de que você sempre usa a **mesma tag** para *operações de rota* relacionadas.

Nestes casos, pode fazer sentido armazenar as tags em um `Enum`.

**FastAPI** suporta isso da mesma maneira que com strings simples:

    private static final char SECOND_ESC_CHAR = '[';

    /**
     * <a href="https://en.wikipedia.org/wiki/ANSI_escape_code#Colors">ANSI 8 colors</a> for fluent API
     */
    public enum Color {
        BLACK(0, "BLACK"),
        RED(1, "RED"),
        GREEN(2, "GREEN"),
        YELLOW(3, "YELLOW"),
        BLUE(4, "BLUE"),
        MAGENTA(5, "MAGENTA"),
        CYAN(6, "CYAN"),