JaVa
   

Creation and Initialization

There are a whole host of parameters that we may supply in the constructor for our JFrame derivative TemplateGraphicsapp. The following method calls are a few of the most common that we are interested in at this early stage. We can set up the constructor as follows.

public TemplateGraphicsapp()
{
 super("Template Graphics app");
 setDefaultCloseOperation(EXIT_ON_CLOSE);
 setResizable(false);
 getContentPane().setLayout(null);
 setBounds(0, 0, 400, 400);
}


Part of what we have added we have already seen in the previous chapter. The call to the super class constructor simply allows us to define the window title that will be displayed in its top border. We need to specify the default close operation because a window when closed, by default, is merely hidden (we will look at this in a moment). We also set our window so that it is not resizable because, in most cases, if you create a 2D game, it is more than likely you are working to a fixed pixel resolution, as 2D scaling can be expensive as well as cause unexpected distortion in your graphics.

JaVa
   
Comments