static

in datasketches-memory-java8/src/main/java/org/apache/datasketches/memory/internal/AllocateDirectWritableMap.java [67:93]

• 21 lines of code
• 2 McCabe index (conditional complexity)

  static {
    try { //The FileChannelImpl methods map0 and unmap0 still exist in 16
      FILE_CHANNEL_IMPL_MAP0_METHOD = FileChannelImpl.class
          .getDeclaredMethod("map0", int.class, long.class, long.class); //JDK14 add boolean.class
      FILE_CHANNEL_IMPL_MAP0_METHOD.setAccessible(true);

      FILE_CHANNEL_IMPL_UNMAP0_METHOD = FileChannelImpl.class
          .getDeclaredMethod("unmap0", long.class, long.class); //OK through jDK16
      FILE_CHANNEL_IMPL_UNMAP0_METHOD.setAccessible(true);


      //The MappedByteBuffer methods load0, isLoaded0 and force0 are removed in 15
      MAPPED_BYTE_BUFFER_LOAD0_METHOD = MappedByteBuffer.class
          .getDeclaredMethod("load0", long.class, long.class); //JDK15 removed
      MAPPED_BYTE_BUFFER_LOAD0_METHOD.setAccessible(true);

      MAPPED_BYTE_BUFFER_ISLOADED0_METHOD = MappedByteBuffer.class
          .getDeclaredMethod("isLoaded0", long.class, long.class, int.class); //JDK15 removed
      MAPPED_BYTE_BUFFER_ISLOADED0_METHOD.setAccessible(true);

      MAPPED_BYTE_BUFFER_FORCE0_METHOD = MappedByteBuffer.class
          .getDeclaredMethod("force0", FileDescriptor.class, long.class, long.class); //JDK15 removed
      MAPPED_BYTE_BUFFER_FORCE0_METHOD.setAccessible(true);
    } catch (final SecurityException | NoSuchMethodException e) {
      throw new RuntimeException("Could not reflect static methods: " + e);
    }
  }