public void startApp() Form form = new Form("Calculator");
display.setCurrent(form);
To run this on DCT4 you need use Sun Java CDC1.1 and J2ME Wireless Toolkit 2.5.2. nokia dct4 calculator
public class CalculatorMIDlet extends MIDlet { private Display display; private TextField tfNumber1, tfNumber2, tfResult; private String num1 = "", num2 = "", operator = ""; private boolean isNumber1 = true; public void startApp() Form form = new Form("Calculator");
double n1 = Double.parseDouble(num1); double n2 = Double.parseDouble(num2); double res = 0; private TextField tfNumber1