A good answer might be:

Notice that some Panels contain only one component.

Now the Panels must be added to the Frame. Here is the part of the program that does that:

public class percentFat extends Frame implements ActionListener { . . . . . . . Panel ttlPanel = new Panel(); // title Panel fatPanel = new Panel(); // fat input components Panel calPanel = new Panel(); // calorie input components Panel perPanel = new Panel(); // percent fat output components Panel butPanel = new Panel(); // do it button . . . . . . . percentFat() // constructor { setTitle("Calories from Fat"); setLayout( new GridLayout(5, 1) ); // choose the layout manager ttlPanel.add( title ); fatPanel.add( fatLabel ); fatPanel.add( inFat ); calPanel.add( calLabel ); calPanel.add( inCal ); perPanel.add( perLabel ); perPanel.add( outPer); butPanel.add( doit ); add( ) ; add( ) ; add( ) ; add( ) ; add( ) ; . . . . . . . } . . . . . . . }

Remember that with GridLayout the components must be added in raster order.

QUESTION 14:

When adding these Panels, why can we say just "add" without using dot notation (as was needed in the previous group of statements)?