The SAP Java Connector (SAP JCo) is a toolkit that allows a Java application to communicate with any SAP System. It combines an easy to use API with unprecedented flexibility and performance. The package supports both, Java to SAP System as well as SAP System to Java calls.

Purpose

SAP Java Connector (SAP JCo) is a middleware component that enables the development of SAP-compatible components and applications in Java. SAP JCo supports communication with the SAP Server in both directions: inbound calls (Java calls ABAP) and outbound calls (ABAP calls Java).

SAP JCo can be implemented with Desktop applications and with Web server applications.

SAP JCo is used as an integrated component in the following applications:

• SAP Business Connector, for communication with external Java applications
• SAP Web Application Server, for connecting the integrated J2EE server with the ABAP environment.

SAP JCo can also be implemented as a standalone component, for example to establish communication with the SAP system for individual online (web) applications.

Implementation

SAP provides SAP Java Connector in a number of different versions:

• as a standalone software component that can be installed independently of the SAP system. You can access the installation files at service.sap.com/connectors.
  
  For client applications in a standalone scenario, you can also use SAP Java Resource Adapter (SAP JRA) instead of SAP JCo. SAP JRA offers a number of benefits (see SAP JRA for Client Applications).
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  SAP JCo is automatically installed when you use SAP Business Connector or SAP Web Application Server for Java.

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