import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; ScriptEngineManager factory = new ScriptEngineManager(); ScriptEngine engine = factory.getEngineByName("groovy"); removeSpecialChars = ".replace('a','')"; text = "Dia"; result = engine.eval("\"" + text + "\"" + removeSpecialChars); System.out.println(result);