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- public class Decorator implements ActionListener
- {
- JFrame fDecorator; // Declare Decorator frame
- JLabel lSize, lType, lTotal, lPrice, lx, lEquals; // Declare Labels
- JTextField tLength, tWidth, tSize, tTotal; // Declare JTextFields
- JComboBox<String> cbFlooring; //Declare JComboBox
- JButton bCalculate1, bCalculate2, bHelp; // Declare JButtons
- static double priceTotal, floorPrice, floorSize; // Declare double variables
- Decorator()
- {
- String[] type_floor = new String[] // Create an array called Type_Floor
- {" Select ","Wood £0.24", "Ceramic £0.37", "Stone £0.86", "Lino £1.24", "Marble £1.76",
- "Laminate £2.10", "Bamboo £2.34", "Carpet £3.78"}; // Add array names for JComboBox
- fDecorator = new JFrame("Flooring Decorator"); // Add the Frame
- fDecorator.setResizable(false); // Disallow user resizing of frame
- fDecorator.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
- lSize = new JLabel("Input Size of your room (Meters): "); // Add size of floor Label
- lType = new JLabel("Type of flooring: "); // Add type of flooring Label
- lTotal = new JLabel("Total Price = "); // Add Total price of flooring Label
- lx = new JLabel("x"); // Add x Label
- lEquals = new JLabel("="); // Add equals Label
- lPrice = new JLabel ("Price of floor per square Meter"); // Adds Price Label
- bCalculate1 = new JButton("Calculate"); // Add calculate Button
- bCalculate2 = new JButton("Calculate"); // Add calculate Button
- bHelp = new JButton("Help"); // Add Help Button
- tLength = new JTextField(5); // Add user editable Text Field
- tWidth = new JTextField(5); // Add second user editable Text Field
- tSize = new JTextField(5); // Add total size of room Text Field
- tTotal = new JTextField(5); // Add total price Text Field
- tTotal.setEditable(false); // Disallow editing of tTotal
- tSize.setEditable(false); // Disallow editing of tSize
- cbFlooring = new JComboBox<>(type_floor); // Add ComboBox, and type cast Array
- fDecorator.setLayout(new FlowLayout()); // Set the layout of Decorator to FlowLayout
- fDecorator.add(lSize); // Add Size Label
- fDecorator.add(tLength); // Add Entry1 TextField
- fDecorator.add(lx); // Add x Label
- fDecorator.add(tWidth); // Add Entry2 TextField
- fDecorator.add(lEquals); // Add Equals Label
- fDecorator.add(tSize); // Add Size TextField
- fDecorator.add(bCalculate1); // Add Calculator1 Button
- fDecorator.add(lPrice); // Add Price Label
- fDecorator.add(cbFlooring); // Add Flooring ComboBox
- fDecorator.add(bCalculate2); // Add Calculator2 Button
- fDecorator.add(lTotal); // Add Total Label
- fDecorator.add(tTotal); // Add Total TextField
- fDecorator.add(bHelp); // Add Help Button
- bCalculate1.addActionListener(this); // Adds an action listener to Calculate button
- bCalculate2.addActionListener(this); // Adds an action listener to Calculate2 button
- bHelp.addActionListener(this); // Adds an action listener to Help button
- cbFlooring.addActionListener(this); // Adds action listener to ComboBox
- Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
- fDecorator.setLocation(dim.width/3-fDecorator.getSize().width/3, dim.height/3-fDecorator.getSize().height/3);
- fDecorator.setSize(420, 130); // Set frame size too 400 by 200
- fDecorator.setVisible(true); // Set frame to visible
- }
- @Override
- public void actionPerformed(ActionEvent e) // Action Listener
- {
- try // Handle exceptions with code inside this block
- {
- JComboBox<String> selectionBox = (JComboBox<String>) e.getSource(); // Declare parameterised ComboBox selectionBox
- String selectedFloor = (String) selectionBox.getSelectedItem(); // Declare selectedFloor as string inside ComboBox
- if(selectedFloor.equals("Wood £0.24")) // If selected Equals Wood
- floorPrice = 0.24; // Assign floorPrice value 0.24
- else if(selectedFloor.equals("Ceramic £0.37")) // If selected Equals Ceramic
- floorPrice = 0.37; // Assign floorPrice value 0.37
- else if(selectedFloor.equals("Stone £0.86")) // If selected Equals Stone
- floorPrice = 0.86; // Assign floorPrice value 0.86
- else if(selectedFloor.equals("Lino £1.24")) // If selected Equals Lino
- floorPrice = 1.24; // Assign floorPrice value 1.24
- else if(selectedFloor.equals("Marble £1.76")) // If selected Equals Marble
- floorPrice = 1.76; // Assign floorPrice value 1.76
- else if(selectedFloor.equals("Laminate £2.10")) // If selected Equals Laminate
- floorPrice = 2.10; // Assign floorPrice value 2.10
- else if(selectedFloor.equals("Bamboo £2.34")) // If selected Equals Bamboo
- floorPrice = 2.34; // Assign floorPrice value 2.34
- else if(selectedFloor.equals("Carpet £3.78")) // If selected Equals Carpet
- floorPrice = 3.78; // Assign floorPrice value 3.78
- }
- catch(Exception a) // Handle exception using this
- {
- // Does nothing if an exception is encountered, prevents program from crashing and handles exception
- }
- try // Handle exception with code inside this block
- {
- char[] len1 = tLength.getText().toCharArray(); // Declares a char variable that gets the text from tEntry1
- char[] len2 = tWidth.getText().toCharArray(); // Declares a char variable that gets the text from tEntry2
- for(int loop1 = 0; loop1 < len1.length; loop1++) // For loop that searches through the TextFields
- {
- if(len1[loop1] == '-' || len2[loop1] == '-') // If the loop finds a - sign
- JOptionPane.showMessageDialog(null,"No Negative numbers please!"); // Displays an error message
- }
- if (tLength.getText() != null && tWidth.getText() != null) // if TextFields have inputs
- {
- double length = Double.parseDouble(tLength.getText()); // Gets string from TextField and converts to double
- double width = Double.parseDouble(tWidth.getText()); // Gets string from TextField and converts to double
- if(e.getSource() == bCalculate1) // When Calculate button is clicked
- {
- tSize.setText(Double.toString(length * width)); // Times input 1 and 2 to find surface area
- }
- }
- }
- catch(Exception ab) // Handle exception using this
- {
- JOptionPane.showMessageDialog(null,"No Text Please!");// Does nothing if an exception is encountered, prevents program from crashing
- }
- try // Handle exception with code inside this block
- {
- if(e.getSource() == bCalculate2) // If Calculate2 button is pressed
- {
- floorSize = Double.parseDouble(tSize.getText()); // Get text value from tSize and assign value too floorSize
- priceTotal = floorPrice * floorSize; // Assign value to priceTotal
- tTotal.setText(""+priceTotal); // Set tTotal TextField
- }
- }
- catch(Exception abc) // Handle exceptions using this
- {
- System.out.println("Exception occured!!!!");// If an exception is encountered, prevents program from crashing and handles exception
- }
- if(e.getSource() == bHelp)
- {
- JFrame fHelp = new JFrame("Help Screen"); // Declare JFrame fHelp
- JLabel lWelcomeHelp = new JLabel("<html>Welcome to the help screen!<br> This screen will guide you though using my decorator application!<br> Firslty input the length and width into the text fields, then press calculate.<br> This will generate the size of the floor you're going to be decorating.<br>After that select which floor you would like to use,<br>the price for each type of flooring is displayed next to it.<br> After deciding on a floor press the second calculate button to price up your new floor!<html>", SwingConstants.CENTER);
- // Declare JLabel WelcomeHelp
- fHelp.setLayout(new FlowLayout()); // Set fHelp frame layout as FlowLayout
- fHelp.add(lWelcomeHelp); // Add WelcomeHelp JLabel to fHelp frame
- fHelp.setSize(600, 250); // Set size of frame
- fHelp.setVisible(true); // Make frame visible
- }
- }
- }
- DecimalFormat dc = new DecimalFormat("0.00");
- String formattedText = dc.format(yourDouble);
- DecimalFormat df = new DecimalFormat("#.00");
- tSize.setText(Double.toString(df.format(Length * Width)));
- double length = Double.parseDouble(tLength.getText());
- double width = Double.parseDouble(tWidth.getText());
- int numberOfDigitsAfterDecimal = 2;
- Double yourDoubleResult = length * width;
- Double resultToBeShown = new BigDecimal(yourDoubleResult).setScale(numberOfDigitsAfterDecimal, BigDecimal.ROUND_HALF_UP).doubleValue();
- System.out.println(resultToBeShown.toString());
- if(e.getSource() == bCalculate) {
- tSize.setText(resultToBeShown.toString());
- }
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