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Thread: Class Extends JFrame and implements Runnable - Where to put the code

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    Default Class Extends JFrame and implements Runnable - Where to put the code

    Hi

    I am after some advice. I have a class that extends JFrame and also implements runnable.

    Basically it is a frame which has a JLabel used for progress message and an OK JButton.

    It also performs some command line tasks using the Runtime.exec() command which is why it implements runnable.

    This is a module which is set up and called from another Java program using:

    Thread t1 = new Thread(new ClassName());
    t1.start();

    Now, for the JFrame e.g. setSize() and setLayout() etc, do these go in the Run() method or in the Constructer?

    Should everything to do with the JFrame e.g. adding JLabel and JButton go in the constructer and the Runtime.exec() go in the Run() method?

    Just a bit confused where I could be putting what code?


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    Default Re: Class Extends JFrame and implements Runnable - Where to put the code

    Normally Threads are used when you want to do two things at the same time. For example one could be to support the GUI and the other to do a task in the background. Is that the reason you are using a Thread?

    The constructor would setup the GUI and the run() method would do the background task.
    There is a possibility of a conflict with Swing classes and it is recommended that the initial code be run on the EDT to prevent conflicts. There are programs posted here that do it both ways: on the EDT or not.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Class Extends JFrame and implements Runnable - Where to put the code

    Yeah basically there is already a GUI open which is handling RMI requests from other clients.

    Whilst this is running this other JFrame is to perform another task whilst still being able to process the RMI requests which look things up in a database and also insert rows etc.

    so the Constructor would contain all the GUI / JFrame commands and the run() method would handle the Runtime.exec() task.

    Sounds good to me

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