# Package org.firebirdsql.util

- Interface Summary
  Interface | Description
  --- | ---
  Base64Decoder | Interface for accessing Java version specific base64 decoder.

- Class Summary
  Class | Description
  --- | ---
  Base64DecoderImpl | Java 8 and higher implementation of `Base64Decoder`.
  ByteArrayHelper | Helper methods for byte arrays.
  ExceptionHelper | Helpers for exception handling
  FirebirdSupportInfo | Helper class that reports if a Firebird version supports a specific feature.
  IOUtils | Utility methods for stream and byte array conversions.
  NumericHelper | Helper for numeric values.
  ReflectionHelper | Class containing static helper methods for reflective access.
  SQLExceptionChainBuilder<E extends java.sql.SQLException> | Helper class for building `SQLException` chains.

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