import javax.script.ScriptContext;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;

public class VulcanRhino {
    public static void eval(String script) {
        try {
            engine.eval(script);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    public static void defVars(Object... args) {
        engine.getBindings(ScriptContext.ENGINE_SCOPE).clear();
        for (int i = 0; i < args.length; i += 2) {
            String name = (String)args[i];
            Object value = args[i + 1];
            engine.put(name, value);
        }
    }
    static ScriptEngine engine = new ScriptEngineManager().getEngineByName("javascript");
}