public static int putBytes(byte[] tgtBytes,int tgtOffset,byte[] srcBytes,int srcOffset,int srcLength){
  System.arraycopy(srcBytes,srcOffset,tgtBytes,tgtOffset,srcLength);
  return tgtOffset + srcLength;
}

public static int putBytes ( byte [ ] tgtBytes , int tgtOffset , byte [ ] srcBytes , int srcOffset , int srcLength ) { System . arraycopy ( srcBytes , srcOffset , tgtBytes , tgtOffset , srcLength ) ; return tgtOffset + srcLength ; }
put bytes at the specified byte array position .
