@Override public int read() throws IOException {
  int num=read(oneBuf,0,1);
  return num == -1 ? -1 : ((int)oneBuf[0]) & BYTE_MASK;
}

@ Override public int read ( ) throws IOException { int num = read ( oneBuf , 0 , 1 ) ; return num == - 1 ? - 1 : ( ( int ) oneBuf [ 0 ] ) & BYTE_MASK ; }
reads a byte from the current tar archive entry . this method simply calls read ( byte [ ] , int , int ) .
