In this section, we will integrate the PayPal SDK into our application. The PayPal SDK has two JAR files to be included in the project. It can be downloaded from https://github.com/paypal/rest-api-sdk-java. The details of the two JAR files that are to be included in the project are as follows:
paypal-core-1.6.0.jar: This JAR file has all the core classes for the PayPal payment
rest-api-sdk-0.9.0.jar: This JAR file consists of all the classes that are required to convert it into a REST-based access
The following screenshot shows the JAR files added to the classpath of our project:
For the integration of the PayPal ...