* Returns true if this reference contains an active value, meaning one that is still considered
     * present in the cache. Active values consist of live values, which are returned by cache
     * lookups, and dead values, which have been evicted but awaiting removal. Non-active values
     * consist strictly of loading values, though during refresh a value may be both active and
     * loading.
     */
    boolean isActive();
  }

Boolean flag = BooleanConversionUtil.toBoolean("true");        // Returns true
Date date = DateConversionUtil.toDate("2023-12-25", "yyyy-MM-dd");

// Primitive conversions with default values
int primitiveInt = IntegerConversionUtil.toPrimitiveInt(value, "0");  // Default to 0 if null
```

### Collection Utilities with Java 21 Support
```java
import org.codelibs.core.collection.CollectionsUtil;

        assertEquals(1, negotiationResponse.getReceiveBufferSize());
        assertEquals(1, negotiationResponse.getTransactionBufferSize());

        // Test maximum integer values
        when(negotiationResponse.getSendBufferSize()).thenReturn(Integer.MAX_VALUE);
        when(negotiationResponse.getReceiveBufferSize()).thenReturn(Integer.MAX_VALUE);

                        buf.length(), e.getMessage());
            }
        }
    }

    /**
     * Get field values.
     * @param document Document
     * @param fieldName Field name
     * @return Field values
     */
    protected String[] getFieldValues(final Map<String, Object> document, final String fieldName) {
        final Object value = document.get(fieldName);

        assertEquals(0x78, buffer[3] & 0xFF);
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, 1, 255, 256, 65535, 65536, Integer.MAX_VALUE })
    @DisplayName("Should handle boundary values")
    void testBoundaryValues(int value) {
        // Given
        byte[] buffer = new byte[4];

        // When
        Encdec.enc_uint32le(value, buffer, 0);

  static class ExpensiveComputation implements Function<Integer, BigInteger> {
    @Override
    public BigInteger apply(Integer from) {
      BigInteger v = BigInteger.valueOf(from);
      // Math.sin is very slow for values outside 4*pi
      // Need to take absolute value to avoid inverting the value.
      for (double i = 0; i < 100; i += 20) {
        v =
            v.add(
                v.multiply(

    private static final Logger logger = LogManager.getLogger(IndexUpdateCallbackImpl.class);

    /**
     * Default constructor for index update callback implementation.
     * Creates a new instance with default values.
     */
    public IndexUpdateCallbackImpl() {
        // Default constructor
    }

    /** Atomic counter for the number of documents processed */
    protected AtomicLong documentSize = new AtomicLong(0);

 * This class uses JUnit 5 for testing.
 */
class MsrpcDfsRootEnumTest {

    /**
     * Test the constructor of MsrpcDfsRootEnum.
     * Verifies that the object is initialized with the correct default values.
     */
    @Test
    void testConstructor() {
        // Given
        String serverName = "test-server";

        // When
        MsrpcDfsRootEnum dfsRootEnum = new MsrpcDfsRootEnum(serverName);

    /** The current page number. */
    private int currentPageNumber;

    /** The ID of the synonym dictionary. */
    public String id;

    /**
     * Clears the pager's state to its default values.
     */
    public void clear() {
        allRecordCount = 0;
        allPageCount = 0;
        existPrePage = false;
        existNextPage = false;
        pageSize = getDefaultPageSize();

 * file authentication settings used by the Fess search engine.
 */
public class FileAuthenticationService {

    /**
     * Default constructor for file authentication service.
     * Creates a new instance with default values.
     */
    public FileAuthenticationService() {
        // Default constructor
    }

    /**
     * Behavior class for file authentication database operations.
     */
    @Resource