Examples of program structures

This section demonstrates several types of program structures and interaction between COBOL Java™, and z/OS Batch Runtime.

Figure 1 shows an overview of a COBOL program that interacts with a Java program. In this example, the program flow starts in COBOL and then flows to a Java program and to another COBOL program. OOCOBOL methods are not used; however, the programs use both COBOL JNI and user JNI.

Figure 1. Example: COBOL program calling Java and unmodified COBOL

Example of a COBOL program calling Java and unmodified COBOL

In Figure 2, a Java program flows to a COBOL program. In this example, the Java program uses an OOCOBOL factory wrapper to call COBOL.

Figure 2. Example: Java program using OOCOBOL to call COBOL

Example of a Java program using OOCOBOL to call COBOL