WritableRasterNative This class exists to wrap a native DataBuffer object. The standard WritableRaster object assumes that a DataBuffer of a given type (e.g., DataBuffer.TYPE_INT) implies a certain subclass (e.g., DataBufferInt). But this is not always the case. DataBufferNative, for example, may allow access to integer-based data, but it is not DataBufferInt (which is a final class and cannot be subclassed). So this class exists simply to allow the WritableRaster functionality for this new kind of DataBuffer object.