How can I replace iWay, as a SAP adapter, from a homegrown Java application?
I have sapjco3.jar and libsapjco3.so with me.
Can I get any documentation on this?
The SAP Java Connector is closed source and available for free, but only for SAP customers and partners.
If you have a SAP Service Marketplace account, you can get the JCo SDK from here: https://service.sap.com/connectors.
The downloadable SDK archive also contains the JavaDoc and some examples.