If you don't already have Shift4 account you can create it here.
Best way to use this library is via Maven.
To do this you will need to add this configuration to your pom.xml:
<dependency>
<groupId>com.shift4</groupId>
<artifactId>shift4-java</artifactId>
<version>2.7.0</version>
</dependency>If you don't want to use Maven then you can download the latest release.
Shift4Gateway gateway = new Shift4Gateway("sk_test_[YOUR_SECRET_KEY]");
ChargeRequest request = new ChargeRequest()
.amount(499)
.currency("EUR")
.card(new CardRequest()
.number("4242424242424242")
.expMonth("11")
.expYear("2022"));
try {
Charge charge = gateway.createCharge(request);
// do something with charge object - see https://dev.shift4.com/docs/api#charge-object
String chargeId = charge.getId();
} catch (Shift4Exception e) {
// handle error response - see https://dev.shift4.com/docs/api#error-object
ErrorType errorType = e.getType();
ErrorCode errorCode = e.getCode();
String errorMessage = e.getMessage();
}For further information, please refer to our official documentation at https://dev.shift4.com/docs.