Update a variable on GUI

[keo]

I am trying to figure out how to update a GUI change (change a string label). I've tried things like revalidate(), repaint(), removeAll() from google suggestions but still can't apply it properly.

Below is a simplfied version of my program. Some of it may be wrong in this example but: Everything seems to work, when the button is pressed, I can confirm that the String has been changed as well as the button has really been pressed with my real code.

//import everything
public class RunGUI extends JFrame{
    public static JFrame frame = new JFrame("Window name");
    public static JPanel myPanel = new JPanel();

    public static void setUpGUI() {
//setup frame: make visible, size etc.
        frame.add(myPanel);
        Panel1.setUpPanel1;
    }
}

//This class is a subclass used to edit myPanel from above class 
//import everything
public class Panel1 extends RunGUI{
    private static String name = "Bob";

    public static void setUpPanel1() { 
        JButton btn1 = new JButton("Name Bob to Jim");
        btn1.addActionListener((ActionListener) new ButtonListener());
        myPanel.add(btn1);
        JLabel nameLabel = new JLabel(name);
        myPanel.add(nameLabel);
        }

class ButtonListener extends RunGUI implements ActionListener {
  public void actionPerformed(ActionEvent e) {
    if (e.getActionCommand().equals("Name Bob to Jim")) {
        name = "Jim";
    }
}

I've attempted to "update" inside the ButtonListener class>actionPerformed()>if statement section. With things like repaint, revalidate the frame and panel1.

Help please!
Thanks in advance

[sunde887]

JLabel has a helpful method called setText, which changes the text to it's argument

JLabel someLabel = new JLabel("Hello");
someLabel.setText("Goodbye");

[keo]

Thank you! I was able to change a label as well as an image.. Hopefully it'll suit the rest of my java project =]!

[sunde887]

You're welcome, glad to have helped. Please mark your thread solved with the thread tools at the top.