Check if DataInputStream has content

Question

Is there a way to ask a DataInputStream, if it has content to read? .readByte() will just hang it, waiting for a byte to be read :( Or do I always have to send a Dummy-Byte, to make sure it always sees something?

Answer 1

dis.available();

Returns: an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking.

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also check answers here. You might get even more informations. "available" of DataInputStream from Socket