private static final void copyBytes ( byte [ ] src , int srcoff , byte [ ] tgt , int tgtoff , int length ) { if ( length < 64 ) { for ( int i = srcoff , n = tgtoff ; -- length >= 0 ; ++ i , ++ n ) { tgt [ n ] = src [ i ] ; } } else { System . arraycopy ( src , srcoff , tgt , tgtoff , length ) ; } }
Copies the contents of src byte array from offset srcoff to the target of tgt byte array at the offset tgtoff .