如何将JTextfield的Text设置为带数组的方法

Question

I have a class called ShoutBox, and there it has this array and this method:

   String messages[] = new String[10];
    //declare 10 arrays
    messages[0] = "Miley";
    messages[1] = "Katy";
    messages[2] = "Gaga";
    messages[3] = "Beyonce";
    messages[4] = "Taylor";
    messages[5] = "Missy";
    messages[6] = "Nicki";
    messages[7] = "Adele";
    messages[8] = "Rihanna";
    messages[9] = "Selena";

    String x = new ShoutBox().shoutOutCannedMessage(messages);
    System.out.println(x);

    public String shoutOutCannedMessage(String[] messages) {
    for (int i = 0; i < messages.length; i++) {
        System.out.println(i+". "+messages[i]); 
    }

    System.out.print("Select a message: ");
    int n = scan.nextInt();
    String message = messages[n];
    return message;
    }

And then I have a another class for GUI, how to I make that result appear in a JTextField when an action is perform?

    private void shoutOutMessageActionPerformed(java.awt.event.ActionEvent     evt) {                                                
  JTextArea.setText(????); 
}

Thanks!

Answer 1

Assuming that you want to show the next phrase in the array in response to an event and not show all phrases all at once:

• Give your class an int index counter field, such as private int shoutIndex and initialize it to 0.
• On any pertinent event (such as in an ActionListener), increment that index, eg, shoutIndex++
• Then make sure that the index is not larger than the length of the array using the remainder operator: shoutIndex %= messages.length
• Then get the corresponding item from the array using the index, messages[shoutIndex] , and use it to set the text of the JTextField.