node-jvm

Overview

node-jvm - jvm in pure node.js

Example

java

public class Main {
    public static long fib(int n) {
        if (n <= 1) return n;
        return fib(n-1) + fib(n-2);
    }
    
    public static void main(String[] args) {
        if (args.length == 0) {
                System.out.print("help: java Main.class {Number}");
                return;
        }
        
        int N = Integer.parseInt(args[0]);
        long start = System.currentTimeMillis();            
        System.out.format("Fibonacci from 1 to %s:\n", N);
        for (int i = 1; i <= N; i++) {
            System.out.println(i + ": " + fib(i));
        }
        long stop = System.currentTimeMillis();
        System.out.println("time: " + (stop - start) + "ms");
        
        System.out.println("done.");
    }
}

node.js

var JVM = require("../../index");
var jvm = new JVM();
jvm.loadClassFile("./Main.class");
jvm.run([10]);

build java files

cd examples fibonacci; make

run jvm

./fibonacci.js

clean

make clean

output

Fibonacci from 1 to 10:
1: 1
2: 1
3: 2
4: 3
5: 5
6: 8
7: 13
8: 21
9: 34
10: 55
time: 18ms
done.

other examples

cd examples/

cast
dogs
fibonacci
idogs
static
switcher

Developer

Yaroslav Gaponov (yaroslav.gaponov -at - gmail.com)