Thanks Danpost ive done that now whats next??
// add world instance field
Text timerText = new Text();
// in the constructor (or a method it calls)
addObject(timerText, 100, 15); //wherever
timerText.setText("Time left: " + (timer/60));
// insert after 'timer--;' in the 'act' method (or a method it calls)
if (timer%60==0) timerText.setText("Time left: " + (timer/60));