Question

This is driving me nuts. I have a working text based application. It has many many variables which now need a GUI. I’m starting with the basics. Whenever some data is sent to my log, I want it to display in my textbox.

Here is a unified entry point for data to pass where it can be manipulated.

public class Log {

    private static void consoleOut(String data) {
    System.out.println(data);
    OBD2nerConsole.update(data);
    }
      public static void level0(String data) {
    if (Status.ConsoleLevel >= 0) {
    consoleOut(data);

    }

This is my form and it has a text box and a few buttons.

public class OBD2nerConsole extends java.awt.Frame {

    public static void update(String data) {
        textField1.setText(textField1.getText() + data);
    }   

}

The prolem I am having is that I am working with a static and non-static I guess.. There is nothing displayed in the text box. I kept playing around and removed all of the errors but it is not working. I don’t really know what to do. It seems that this is the best configuration, because there are no errors, but the text box is not doing anything.

I should probly add that this is my first form EVER!

Answer 1

If you give Log a static reference to an instance of OBD2nerConsole and remove static from update(String) you should be able to update the textField1.

Listing of modified Log.java:

public class Log {
    private static Updatable console = Updatables.getUpdatable();

    private static void consoleOut(String data) {
        System.out.println(data);
        console.update(data);
    }

    public static void level0(String data) {
        if (Status.ConsoleLevel >= 0) {
            consoleOut(data);
        }
    }
}

Listing of Updatable.java:

public interface Updatable {
    void update(String);
}

Listing of modified snippet of ODB2nerConsole.java:

public class OBD2nerConsole extends java.awt.Frame implements Updatable {
    @Override
    public void update(String data) {
        textField1.setText(textField1.getText() + data);
    }
}

Listing of Updatables.java:

public class Updatables {
    public Updatable getUpdatable() {
        return new ODB2nerConsole();
    }
}