Creating a window is easy. You just have to create a
JFrame frame = new JFrame();
You may wish to give your window a title. You can so do by passing a string when creating the
JFrame, or by calling
JFrame frame = new JFrame("Super Awesome Window Title!"); //OR frame.setTitle("Super Awesome Window Title!");
The window will be as small as possible when it has been created. To make it bigger, you can set its size explicitly:
Or you can have the frame size itself based on the size of its contents with the
pack() methods are mutually exclusive, so use one or the other.
Note that the application will not quit when the window has been closed. You can quit the application after the window has been closed by telling the
JFrame to do that.
Alternatively, you can tell the window to do something else when it is closed.
WindowConstants.DISPOSE_ON_CLOSE //Get rid of the window WindowConstants.EXIT_ON_CLOSE //Quit the application WindowConstants.DO_NOTHING_ON_CLOSE //Don't even close the window WindowConstants.HIDE_ON_CLOSE //Hides the window - This is the default action
An optional step is to create a content pane for your window. This is not needed, but if you want to do so, create a
JPanel and call
JPanel pane = new JPanel(); frame.setContentPane(pane);
After creating it, you will want to create your components, then show the window. Showing the window is done as such.
For those of you who like to copy and paste, here's some example code.
JFrame frame = new JFrame("Super Awesome Window Title!"); //Create the JFrame and give it a title frame.setSize(512, 256); //512 x 256px size frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); //Quit the application when the JFrame is closed JPanel pane = new JPanel(); //Create the content pane frame.setContentPane(pane); //Set the content pane frame.setVisible(true); //Show the window