Part of https://github.com/Payment-Components/demo-sepa#more-features-are-included-in-the-paid-version-like

SepaTestResolveTransactionPacs008.java

import gr.datamation.sepa.core.messages.eba.pacs.FIToFICustomerCreditTransfer;

import java.util.List;

public class SepaTestResolveTransactionPacs008 {

    public static void main(String... args) {
        execute();
    }

    public static void execute() {
        //You have to initiate the messageObject object using the suitable constructor.
        //In order to parse and validate a pacs.008 you need to use FIToFICustomerCreditTransfer
        //FIToFICustomerCreditTransfer > matches the xml element <FIToFICstmrCdtTrf>
        FIToFICustomerCreditTransfer messageObject = new FIToFICustomerCreditTransfer();

        try {
            //Use parseAndValidateString() to fill the messageObject the content of the messageObject and validate it
            //validation fills the messageObject variable errors object with any issue found during validation
            messageObject.parseAndValidateString(validPacs008String);

            if (messageObject.hasValidationErrors()) {
                messageObject.printValidationErrors();
            } else {
                System.out.println(messageObject.toString());
            }

            /*
            In addition to the getElement methods, the `resolveTransaction()` or `resolveTransactions()` methods can be used to greatly simplify the parsing of messages.
            The following uses a FIToFICustomerCreditTransfer (`pacs.008.001.02`) message as an example. These methods return vectors of vectors of LeafInfo objects.
            LeafInfo objects have 3 fields: fieldPath, fieldCd, value
             */
            System.out.println("--------------------------------------------");
            List<List<String[]>> transactions = messageObject.resolveTransactions();
            for (List<String[]> transaction : transactions) {
                for (String[] leaf : transaction) {
                    System.out.println("Path: " + leaf[0] + " | Field: " + leaf[1] + " | Value: " + leaf[2]);
                    System.out.println("--------------------------------------------");
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            System.err.println("Message cannot be parsed");
        }
    }

    private static final String validPacs008String = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
            "<Document xmlns=\"urn:iso:std:iso:20022:tech:xsd:pacs.008.001.02\">\n" +
            "    <FIToFICstmrCdtTrf>\n" +
            "        <GrpHdr>\n" +
            "            <MsgId>PSCXMILBGRAA20101115114110891</MsgId>\n" +
            "            <CreDtTm>2013-11-07T11:41:10</CreDtTm>\n" +
            "            <NbOfTxs>1</NbOfTxs>\n" +
            "            <TtlIntrBkSttlmAmt Ccy=\"EUR\">20.00</TtlIntrBkSttlmAmt>\n" +
            "            <IntrBkSttlmDt>2013-11-07</IntrBkSttlmDt>\n" +
            "            <SttlmInf>\n" +
            "                <SttlmMtd>CLRG</SttlmMtd>\n" +
            "                <ClrSys>\n" +
            "                    <Prtry>ST2</Prtry>\n" +
            "                </ClrSys>\n" +
            "            </SttlmInf>\n" +
            "            <InstdAgt>\n" +
            "                <FinInstnId>\n" +
            "                    <BIC>BCYPCY2N</BIC>\n" +
            "                </FinInstnId>\n" +
            "            </InstdAgt>\n" +
            "        </GrpHdr>\n" +
            "        <CdtTrfTxInf>\n" +
            "            <PmtId>\n" +
            "                <InstrId>DEUTDE0920000891</InstrId>\n" +
            "                <EndToEndId>NOTPROVIDED</EndToEndId>\n" +
            "                <TxId>DEUTDEFF011OS10222891</TxId>\n" +
            "            </PmtId>\n" +
            "            <PmtTpInf>\n" +
            "                <SvcLvl>\n" +
            "                    <Cd>SEPA</Cd>\n" +
            "                </SvcLvl>\n" +
            "            </PmtTpInf>\n" +
            "            <IntrBkSttlmAmt Ccy=\"EUR\">20.00</IntrBkSttlmAmt>\n" +
            "            <ChrgBr>SLEV</ChrgBr>\n" +
            "            <InstgAgt>\n" +
            "                <FinInstnId>\n" +
            "                    <BIC>DEUTDEFFXXX</BIC>\n" +
            "                </FinInstnId>\n" +
            "            </InstgAgt>\n" +
            "            <Dbtr>\n" +
            "                <Nm>Debtor name</Nm>\n" +
            "                <PstlAdr>\n" +
            "                    <Ctry>DE</Ctry>\n" +
            "                    <AdrLine>Indirizzo 1 Dbtr</AdrLine>\n" +
            "                    <AdrLine>Indirizzo 2 Dbtr</AdrLine>\n" +
            "                </PstlAdr>\n" +
            "                <Id>\n" +
            "                    <OrgId>\n" +
            "                        <Othr>\n" +
            "                            <Id>PT50078101120112001285102</Id>\n" +
            "                            <SchmeNm>\n" +
            "                                <Cd>BANK</Cd>\n" +
            "                            </SchmeNm>\n" +
            "                        </Othr>\n" +
            "                    </OrgId>\n" +
            "                </Id>\n" +
            "            </Dbtr>\n" +
            "            <DbtrAcct>\n" +
            "                <Id>\n" +
            "                    <IBAN>DE73340302860352858328</IBAN>\n" +
            "                </Id>\n" +
            "            </DbtrAcct>\n" +
            "            <DbtrAgt>\n" +
            "                <FinInstnId>\n" +
            "                    <BIC>DEUTDEFFXXX</BIC>\n" +
            "                </FinInstnId>\n" +
            "            </DbtrAgt>\n" +
            "            <CdtrAgt>\n" +
            "                <FinInstnId>\n" +
            "                    <BIC>BCYPCY2N</BIC>\n" +
            "                </FinInstnId>\n" +
            "            </CdtrAgt>\n" +
            "            <Cdtr>\n" +
            "                <Nm>CREDITOR NAME</Nm>\n" +
            "                <PstlAdr>\n" +
            "                    <Ctry>GR</Ctry>\n" +
            "                    <AdrLine>ADDRESS 1@#$/\\</AdrLine>\n" +
            "                    <AdrLine>ATHENS</AdrLine>\n" +
            "                </PstlAdr>\n" +
            "                <Id>\n" +
            "                    <OrgId>\n" +
            "                        <Othr>\n" +
            "                            <Id>PT60078101120112001285102</Id>\n" +
            "                            <SchmeNm>\n" +
            "                                <Cd>BANK</Cd>\n" +
            "                            </SchmeNm>\n" +
            "                        </Othr>\n" +
            "                    </OrgId>\n" +
            "                </Id>\n" +
            "            </Cdtr>\n" +
            "            <CdtrAcct>\n" +
            "                <Id>\n" +
            "                    <IBAN>GR2703801380000000000089777</IBAN>\n" +
            "                </Id>\n" +
            "            </CdtrAcct>\n" +
            "            <RmtInf>\n" +
            "                <Ustrd>Rem. Info</Ustrd>\n" +
            "            </RmtInf>\n" +
            "        </CdtTrfTxInf>\n" +
            "    </FIToFICstmrCdtTrf>\n" +
            "</Document>";

}