According to this function:

public boolean verify(Sha256Hash sigHash, ECDSASignature signature) {
        return ECKey.verify(sigHash.getBytes(), signature, getPubKey());
    }

I do not understand which must be the content of the variable sighash.

Here is my function where the creation of signature happend:

public ECDSASignature scriptSig(Receiver r) {
        System.out.println("First step :\n");
        System.out
                .println("CREATION OF SCRIPTSIG-----OR----- OUTPUT TRANSACTION");

        r = super.getReceiver();

        Wallet rwallet = r.getReceiverWalletList().get(0);

        BigInteger R = rwallet.getClientKey().getPrivKey();
        System.out
                .println("*******************************************************");
        System.out.println(R);

        BigInteger S = new BigInteger(r.getReceiverWalletList().get(0).getClientKey().getPubKey()); // i
                                                                                // had
                                                                                // .getPubkeyHash()
        System.out
                .println("*******************************************************");
        System.out.println(S);


        // constructs a signature with the given components
        ECDSASignature receiverSig = new ECDSASignature(R, S);

        return receiverSig;
    }

and here i am trying to verify my signature:

sha256hash = new Sha256Hash(receiver.getReceiverWalletList()
                        .get(0).getClientKey().getPrivKeyBytes());
            redeemerSignature = scriptSig(receiver);


.....


if (receiver.getReceiverWalletList().get(0).getClientKey()
                        .verify(sha256hash, redeemerSignature))
                    System.out.println("The transaction finished SUCCESSFULLY");

                else
                    System.out
                            .println("The transaction finished UNSUCCESSFULLY");

I think i my problem is the right input in sha256hash = new Sha256Hash(...) instance.

Any help?