2.3.4 MathLinkException

MathLinkException is the exception class that is thrown by many of the methods in MathLink and KernelLink. The J/Link API uses exceptions to indicate errors, rather than function return values like the MathLink C API. In C, you write code that checks the return values like this:

    // C code

    if (!MLPutInteger(link, 42)) {

        // was error; print message and clean up.

    }

In J/Link, you wrap MathLink calls in a try block and catch MathLinkException.