After researching, I discovered a few methods for running `java` files within a `node.js` application. One option is to spawn a child process: (where the java code is contained with dependencies in an executable `jar`).
var exec = require('child_process').exec, child;
child = exec('java -jar file.jar arg1 arg2',
function (error, stdout, stderr){
console.log('stdout: ' + stdout);
console.log('stderr: ' + stderr);
if(error !== null){
console.log('exec error: ' + error);
}
});
Another approach involves using the `java-npm` module (link), which acts as a bridge to `JNI`, allowing for the creation of `objects`, manipulation of `attributes`, and execution of `methods`.
In a production setting, where I need my `node.js` (`Express`) server to interact with a `java` program (specifically one that saves images to the local directory), I am seeking advice on the best way to achieve this based on industry standards. Additionally, passing a large number of `arguments` to the main class via the command line can be cumbersome. Would it be better for the `java` program to read these arguments from an input file instead?