Graphical User Interfaces - Building Java Programs: A Back to Basics Approach - page 827

Table 14.5 Useful Methods of Dimension Objects

public Dimension(int width, int height)
Constructs a Dimension representing the given size
public int getWidth()
Returns the width represented by this Dimension
public int getHeight()
Returns the height represented by this Dimension

Dimension class, such as how to construct it. Table 14.5 lists the methods with
which you should be familiar.
The new version of the SimpleFrame program that follows creates a frame and
sets several of the properties listed in Table 14.4. In this version, we give the frame a
color, set its location and size on the screen, and place text in its title bar. We also set
the “default close operation” of the frame, telling it to shut down our Java program
when the frame is closed:

1 // Sets several properties of a window frame.
2
3 import java.awt.*; // for Dimension
4 import javax.swing.*; // for GUI components
5
6 public class SimpleFrame2 {
7 public static void main(String[] args) {
8 JFrame frame = new JFrame();
9 frame.setForeground(Color.WHITE);
10 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
11 frame.setLocation( new Point(10, 50));
12 frame.setSize( new Dimension(300, 120));
13 frame.setTitle("A frame");
14 frame.setVisible( true );
15 }
16 }

When the program is run, the following window appears:

When the window is closed, the program exits.