//Input Dialog box #1  Default caption

  String name = JOptionPane.showInputDialog(this, "What's your name?");

     // display in textbox
    txtTemp.setText(name);  //put into textbox

//Input Dialog Box #2 Custom Caption

 String code = JOptionPane.showInputDialog(this, 
                                              "Enter the secret code to continue", 
                                              "Secret code needed", 
                                              JOptionPane.WARNING_MESSAGE);


    // display in textbox
    txtTemp.setText(code);


//Input dialog with a combo box for choosing

    String[] pizzas = { "Cheese", "Pepperoni", "Sausage", "Veggie"};
    
    String favoritePizza = (String) JOptionPane.showInputDialog(this, 
        "What is your favorite pizza?",
        "Favorite Pizza",
        JOptionPane.QUESTION_MESSAGE, 
        null, 
        pizzas, 
        pizzas[0]);


   
    txtTemp.setText(favoritePizza);