A good answer might be:

Just one.

Here is part of the new, improved program. Notice that it has two more Panels than before. Each new Panel will need a component added to it. You will also have to set the layout manager correctly.

public class percentFat extends Frame implements ActionListener { Label title = new Label("Percent of Calories from Fat"); Label fatLabel = new Label("Enter grams of fat: "); Label calLabel = new Label("Enter total calories: "); Label perLabel = new Label("Percent calories from fat: "); TextField inFat = new TextField( 7 ); TextField inCal = new TextField( 7 ); TextField outPer = new TextField( 7 ); Button doit = new Button("Do It!"); 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 int calories ; // input from the user: total calories per serving int fatGrams ; // input from the user: grams of fat per serving double percent ; // result: percent of calories from fat percentFat() // constructor { setTitle("Calories from Fat"); setLayout( ) ; ttlPanel.add( ) ; fatPanel.add( fatLabel ); fatPanel.add( inFat ); calPanel.add( calLabel ); calPanel.add( inCal ); perPanel.add( perLabel ); perPanel.add( outPer); butPanel.add( ) ; . . . . . . . }

QUESTION 13:

Think about what should go into each blank before clicking it.