Librairie JAVA requetage avec gestion des parentheses

package test;

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;

public class Test {
    public static void main(String[] args) throws ScriptException {
        ScriptEngine js = new ScriptEngineManager().getEngineByName("js");
        boolean toto = true, tata = true, titi = true;
        String script = "toto=" + toto + "; "
                      + "tata=" + tata + "; "
                      + "titi=" + titi + "; "
                      + "((toto && tata) || (titi && ! tata));";
        boolean result = (boolean) js.eval(script);
        System.out.println(result);
    }
}