How does wca4z typically represent a COBOL PERFORM paragraph-name statement in generated Java?
Select an answer to reveal the explanation.
Short Explanation
A PERFORM is basically COBOL saying "go do that paragraph, then come back here." Java already has a tool for exactly that, the method call, so the paragraph becomes a method and the PERFORM becomes a call to it.
Full Explanation
Watsonx Code Assistant for Z converts COBOL logic paragraph by paragraph into Java method signatures within the generated classes, so every named paragraph has a corresponding Java method. A COBOL PERFORM paragraph-name statement transfers control to that paragraph and returns to the next statement when it finishes, which is exactly the call-and-return behavior of a Java method invocation. Representing PERFORM as a method call therefore preserves the original semantics and keeps the Java readable and testable. A GOTO label is not an option in Java; goto is a reserved word the language never implements, and even in COBOL a GO TO does not return, so it would change the program's behavior. A background thread would make the paragraph run asynchronously, breaking the strict sequential order COBOL guarantees and introducing race conditions. A lambda captured in a functional interface adds indirection with no benefit, since the paragraph is simply invoked in place. On the exam, map PERFORM to a method call and a paragraph to a method. As an operational check, pick a PERFORM in the source, find the matching call in the generated Java, and confirm that the target method holds the logic of the named paragraph.