Java ScriptEngine cannot find module referenced by Javascript file

I am using Java 7, and I have the following code that uses the jsondiffpatch Javascript library:

logger.debug("CURRENT PATH=" + Paths.get("").toAbsolutePath()); ScriptEngine engine = new ScriptEngineManager().getEngineByName("JavaScript"); reader = new FileReader("webclient/common/js/jsondiffpatch.min.js"); engine.eval(reader);

If you look at line 48 of jsondiffpatch.js (the uncompressed version of jsondiffpatch.min.js), you can see it references another module:

var packageInfoModuleName = '../package.json';

When executing the Java code, the "engine.eval(reader)" line can't find package.json and throws the following exception:

javax.script.ScriptException: Error: Cannot find module '../package.json' in <Unknown source> at line number 1 at com.sun.script.javascript.RhinoScriptEngine.eval(RhinoScriptEngine.java:224) ~[na:1.7.0_51] at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:249) ~[na:1.7.0_51] at nms.server.domain.AuditManager$ConfigAuditProcessor.run(AuditManager.java:465) ~[nms.jar:na] Caused by: sun.org.mozilla.javascript.internal.JavaScriptException: Error: Cannot find module '../package.json' (<Unknown source>#1) at sun.org.mozilla.javascript.internal.Interpreter.interpretLoop(Interpreter.java:1066) ~[na:1.7.0_51] at sun.org.mozilla.javascript.internal.Interpreter.interpret(Interpreter.java:849) ~[na:1.7.0_51] at sun.org.mozilla.javascript.internal.InterpretedFunction.call(InterpretedFunction.java:162) ~[na:1.7.0_51] at sun.org.mozilla.javascript.internal.ContextFactory.doTopCall(ContextFactory.java:430) ~[na:1.7.0_51] at com.sun.script.javascript.RhinoScriptEngine$1.superDoTopCall(RhinoScriptEngine.java:116) ~[na:1.7.0_51] at com.sun.script.javascript.RhinoScriptEngine$1.doTopCall(RhinoScriptEngine.java:109) ~[na:1.7.0_51] at sun.org.mozilla.javascript.internal.ScriptRuntime.doTopCall(ScriptRuntime.java:3160) ~[na:1.7.0_51] at sun.org.mozilla.javascript.internal.InterpretedFunction.exec(InterpretedFunction.java:173) ~[na:1.7.0_51] at sun.org.mozilla.javascript.internal.Context.evaluateReader(Context.java:1169) ~[na:1.7.0_51] at com.sun.script.javascript.RhinoScriptEngine.eval(RhinoScriptEngine.java:214) ~[na:1.7.0_51]

The jsondiffpatch.min.js file is located in the webclient/common/js directory, and the package.json file is located in the webclient/common directory.

The "logger.debug" line printed out the following for the current working directory:

CURRENT PATH=/usr/local/project/version/Software

So I tried copying the package.json file to the /usr/local/project/version directory, and I still got the same exception.

Why can't the ScriptEngine find the package.json file?