SAP Java Connector 
Purpose
The SAP Java Connectorsapurl_link_0005_0003_0017 (SAP JCo) is a middleware component that enables the development of SAP-compatible components and applications in Java. The SAP JCo supports communication with the SAP Server in both directions: inbound calls (Java calls ABAP) and outbound calls (ABAP calls Java).
The SAP JCo can be implemented with Desktop applications and with Web server applications.
The 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.
Implementation Considerations
The SAP Java Connector is a standalone software component that can be installed independently of the SAP system. You can access the installation files at service.sap.com/connectors. The SAP JCo is automatically installed when you use the SAP Business Connector or the SAP Web Application Server for Java.
Further Information
· SAP JCo Application Scenarios
· SAP JCo Installation
· SAP JCo Programming