How to run my Haskell function in Java

Suppose I'm in math Haskell function added to HS

How to run the add function through a java program and store the output as a variable?

It may be similar to the following:

public int runHaskell(String haskellFile) {
    int output;
    //run add function from file 'math.hs' and store result to output
    return output;
}

(if necessary, I can also access the target file: math. O, the interpreter file math.hi, and the executable file main. Exe.)

Solution

Simple (but clumsy) way:

Runtime. exec()

Then you can listen to the output of the Haskell program and parse its results

Alternatively, you can write a small wrapper for JNI to call your Haskell content directly