Example code:

import javatools
importJava "java.lang.System"

# initialize new JVM
defaultJVM = newJVM()

let currtime = System_static.currentTimeMillis()
echo "Current time in milliseconds is: ", $currtime

In order to use nimrod-java binding you need to create build script, which will scan JAR files during compilation. This gives you compile time safety when interacting with Java classes.

Save the following to build.nim (for example):

import jnigen, jnifindjava, os
var builder: PBuilder = jnigen.makeBuilder("build/jnigen")
builder.addJAR(findJava() & "/jre/lib/rt.jar",
  prefixes=["java/lang"])
builder.generate()

discard execShellCmd("nimrod c " & builder.compileFlags() & " yourcode")

And use these commands to build and run your code:

nimrod c --path:pathToNimrodJava -d:useLibzipSrc -r build
./yourcode