Main.java Source code

Introduction

Here is the source code for Main.java

Source

import static javax.script.ScriptContext.ENGINE_SCOPE;
import static javax.script.ScriptContext.GLOBAL_SCOPE;

import javax.script.Bindings;
import javax.script.ScriptContext;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import javax.script.SimpleScriptContext;

public class Main {
    public static void main(String[] args) throws ScriptException {
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByName("JavaScript");

        manager.put("n1", 1);
        String script = "var sum = n1 + n2;print(msg + " + "' n1=' + n1 + ', n2=' + n2 + " + "', sum=' + sum);";

        engine.put("n2", 2);
        engine.put("msg", "a string");
        engine.eval(script);

        Bindings bindings = engine.createBindings();
        bindings.put("n2", 3);
        bindings.put("msg", "another string");
        engine.eval(script, bindings);

        ScriptContext ctx = new SimpleScriptContext();
        Bindings ctxGlobalBindings = engine.createBindings();
        ctx.setBindings(ctxGlobalBindings, GLOBAL_SCOPE);
        ctx.setAttribute("n1", 4, GLOBAL_SCOPE);
        ctx.setAttribute("n2", 5, ENGINE_SCOPE);
        ctx.setAttribute("msg", "ScriptContext:", ENGINE_SCOPE);
        engine.eval(script, ctx);

        engine.eval(script);
    }
}