Which Java type does wca4z typically use when generating code for COBOL numeric fields defined with PIC 9(11)V9(2) COMP-3?

Think of it like working hands-on with IBM mainframe systems — the answer here is 'int, because COMP-3 fields are always integers in COBOL'. BigDecimal is the Java type that matches COBOL packed decimal (COMP-3) arithmetic because it provides exact decimal representation and configurable rounding behavior, preserving financial calculation . On real mainframe exams, this concept comes up repeatedly so make sure you have it locked in.