public void actionPerformed(ActionEvent event) {
if (displayNutri.isSelected()
&& codeText.getText() != null) { // for Display Nutritional Info Button
try {
intValue2 = Integer.valueOf(codeText1.getText()); // Get the text value of Item Code
} catch (NumberFormatException e) {
display = "Enter Correct Item Code"; // Display Error Message for Wrong Input
displayLabel.setForeground(Color.magenta);
displayLabel.setText(display);
codeText1.setText(null);
return;
}
FoodItem item =
DisplayNutritionalInfo(intValue2); // Call to the Method to Display Nutritional Info
if (item != null) {
calories =
item.GetCalories(); // Get the nutrional Info of the Item Code from the FoodItem
sugar = item.GetSugarContents();
fats = item.GetFatContents();
display =
"Calorific Value = "
+ calories
+ " Sugar Contents = "
+ sugar
+ "gms"
+ " Fat Contents = "
+ fats
+ "gms";
displayLabel.setForeground(Color.magenta);
displayLabel.setText(display);
} else {
display = "Enter Correct item Code"; // Display Error Message for Wrong Input
displayLabel.setForeground(Color.magenta);
displayLabel.setText(display);
codeText.setText(null);
}
}
if (querySuggest.isSelected()
&& calorieText.getText() != null) { // for Display Query Suggestion Button
try {
intValue2 =
Integer.valueOf(calorieText.getText()); // Get the text value of Maximum Calorie Limit
} catch (NumberFormatException e) {
display = "Enter Correct Calorie Limit"; // Display Error Message for Wrong Input
displayLabel.setForeground(Color.magenta);
displayLabel.setText(display);
calorieText.setText(null);
return;
}
if (intValue2 < 0) {
display =
"Enter Correct Calorie Limit"; // Display Error Message for Wrong (negative) Input
displayLabel.setForeground(Color.magenta);
displayLabel.setText(display);
calorieText.setText(null);
} else {
Hashtable itemList = DisplaySuggestion();
Enumeration e = itemList.elements();
String finalStr = "";
for (int i = 0;
e.hasMoreElements();
i++) { // Get the list of Food items below the entered Calorie Limit
VendingMachine.FoodStock stock = (VendingMachine.FoodStock) e.nextElement();
FoodItem item = stock.item;
if (item.GetCalories() <= intValue2) {
flag = 1;
if (!finalStr.equals("")) {
finalStr = finalStr + " , " + item.getDescription();
} else {
finalStr = item.getDescription();
}
}
}
if (flag == 1) {
display = finalStr; // Display the list of Food items below the entered Calorie Limit
displayLabel.setForeground(Color.magenta);
displayLabel.setText(display);
flag = 0;
} else {
display =
"No items in the Machine below Calorie Limit "
+ intValue2; // No Items below the entered Calorie Limit
displayLabel.setForeground(Color.magenta);
displayLabel.setText(display);
}
}
}
}
