GRAPHICAL USER INTERFACE (GUI) AND OBJECT-ORIENTED DESIGN (OOD) - Java Programming: From Problem Analysis to Program Design - page 346

lengthTF = new JTextField(10);
widthTF = new JTextField(10);
areaTF = new JTextField(10);
perimeterTF = new JTextField(10);

Container pane = getContentPane();
pane.setLayout( new GridLayout(4, 2));

pane.add(lengthL);
pane.add(lengthTF);
pane.add(widthL);
pane.add(widthTF);
pane.add(areaL);
pane.add(areaTF);
pane.add(perimeterL);
pane.add(perimeterTF);

setSize(WIDTH, HEIGHT);
setVisible( true );
setDefaultCloseOperation(EXIT_ON_CLOSE);

}

public static void main(String[] args)
{

RectangleProgramThree rectObject =
new RectangleProgramThree();

}

}

Sample Run: (Figure 6-7 shows the sample run.)

FIGURE 6-7 Sample run for RectangleProgramThree

To complete the design of the user interface, we will discuss how to create buttons.