Byte b = new Byte((byte)in.read()); conversion error

Hi
I receive with a DataInputStream with:
Byte b = new Byte((byte)in.read());
If i send bytes < 0x79 or > 0xa0 all works, otherwise I obtain, i.e:
0x80 = -84 (right)
0x81 = -3
0x82 = 26
Why???

In sender side seems ok, in dump file the bytes are ok; this is sender side (dataSend is a LinkedList):
for (Iterator iter = dataSend.iterator(); iter.hasNext();) {
Byte b = (Byte)iter.next();
bytePark = b.byteValue();
dataOut.write(bytePark);
// then I dump bytePark on file
receiver side:
BufferedReader in = new BufferedReader(
new InputStreamReader(client.getInputStream()));
Byte e = new Byte((byte)in.read());
if (e.byteValue() == (byte)0xf3) { // I need analize when receive 0xf3
// here e.byteValue() has wrong behavior

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Byte b = new Byte((byte)in.read()); conversion error

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