Question

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I am looking forward to call some javascript method from a java class
can anyone give a complete example of how to call a js using java file???

HI,

i have a javascript file script.js and a class file callScript.java
i want to make a call to encrypt() residing in script.js

how to do it using Rhino? i am using java5

NOTE : would be better if i get some code snippet.

Answer 1

String javaScriptExpression = "sayHello(name);";
Reader javaScriptFile = new StringReader(
    "function sayHello(name) {\n"
        + "    println('Hello, '+name+'!');\n" + "}");

ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory
    .getEngineByName("JavaScript");
ScriptContext context = engine.getContext();
context.setAttribute("name", "JavaScript",
    ScriptContext.ENGINE_SCOPE);

engine.eval(javaScriptFile);
engine.eval(javaScriptExpression);

In this example. create a Reader object by just reading .js file by BufferedReader.
Hope this will help you.