How does wca4z typically handle the COBOL ON SIZE ERROR clause in generated Java?

Think of it like working hands-on with IBM mainframe systems — the answer here is 'By ignoring size errors since Java numeric types do not overflow'. wca4z maps COBOL ON SIZE ERROR handlers to Java ArithmeticException throws when an arithmetic operation produces a result exceeding the defined field precision, preserving the original error-handling . On real mainframe exams, this concept comes up repeatedly so make sure you have it locked in.