[EASY] Playing with JFrame interfaces

[Andreas]

Hi,

I'm new to Java, and I'm trying to make a basic app.

I need to do the following.

I have SendMessage.java and View.java.

A button in View.java hides View.java, and now im trying to put a piece of code that shows a new JFrame i made called Confirm.java.

Here is what my files look like (not all code just the essential):

SendMessage.java

public class SendMessage {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        View showView = new View();
        showView.setVisible(true);
        
        Confirm showConfirm = new Confirm();
        showConfirm.setVisible(false);
    }
}

View.java

public class View extends javax.swing.JFrame {

    /**
     * Creates new form View
     */
    public View() {
        initComponents();
    }
    

    @SuppressWarnings("unchecked")
 

    private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        setVisible(false);
        // I guess I need to put something here! <---------------------------------------------
        System.out.println(jTextField1.getText());
        System.out.println();
        System.out.println(jTextField2.getText());
        System.out.println();
        System.out.println(jTextArea2.getText());
    }

Confirm.java doesn't have anything yet.

I'm sure its an easy one.

Thanks for all your help!

Andreas

[Fubarable]

um,... what is your question exactly?

[doWhile]

Crossposted: Using JFrame interfaces

[Andreas]

um,... what is your question exactly?

Well, if you look at my View.java file line 15 i hide the first view. Now i want to show the view called Confirm.java in line 16.

I tired putting showConfirm.setVisible(true); but that doesnt work.

[Fubarable]

If you need to have one object have access to another, then the first object needs a reference to the second. You have one of two options here:

1. Create the Confirm object inside of View so the reference is readily available, or
2. Pass a reference to the Confirm object into View from the main method by either passing the confirm object's reference into View's constructor or in a separate setConfirm(Confirm confirm) method.

Having said this, it's a very ugly program design to have windows popping into and out of view. Most will either show a dialog on top of a main window or swap views on a stable main window. For my money for a confirm dialog, I'd use a dialog such as a JOptionPane or a JDialog and keep the main window in view.

Also, please read the link that doWhile provides to you in your cross-post. It's not fair to us for you to cross-post without notifying us.