CSC307 Lecture 07

Introduction to Software Engineering
Clean Coding
(202307)

Transcript

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   CSC 307
   Introduction to Software Engineering
   Lecture 07:
   Clean Coding
   Dr. Javier Gonzalez-Sanchez
   javiergs@calpoly.edu
   www.javiergs.com
   Building 14 -227
   Office Hours: By appointment
   

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   § Modeling or Design
   § Construction or Coding
   Activities
   

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   Java API + Tutorials
   

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   Key Ideas
   DRY
   KIS
   Readable
   (comments, names, spaces,…)
   

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   Whiteboard
   

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   Relationships
   Association Directed
   Association
   Reflexive
   Association
   Multiplicity
   Aggregation Composition Generalization Realization
   

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   GUI in Java
   Swing and AWT Libraries
   

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   import javax.swing.*;
   public class Example extends JFrame{
   public static void main(String[] args) {
   Example frame = new Example();
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setSize(500,500);
   frame.setVisible(true);
   }
   }
   Method main()
   

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   import javax.swing.*;
   public class Example extends JFrame{
   public Example() {
   super("Hello World Swing");
   GridLayout layout = new GridLayout(3,2);
   setLayout(layout);
   JLabel label = new JLabel("Hello World");
   add(label);
   JButton button = new JButton("Click Me");
   add(button);
   JTextField text = new JTextField("Text", 10);
   add(text);
   JCheckBox check = new JCheckBox("Option");
   add(check);
   }
   public static void main(String[] args) {
   Example frame = new Example();
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setSize(500,500);
   frame.setVisible(true); }
   }
   Layouts
   

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    import javax.swing.*;
    public class Example extends JFrame{
    public Example() {
    super("Hello World Swing");
    BorderLayout layout = new BorderLayout();
    setLayout(layout);
    JLabel label = new JLabel("Hello World");
    add(label, BorderLayout.CENTER);
    JButton button = new JButton("Click Me");
    add(button , BorderLayout.SOUTH);
    JTextField text = new JTextField("Text", 10);
    add(text , BorderLayout.NORTH);
    JCheckBox check = new JCheckBox("Option");
    add(check , BorderLayout.EAST);
    }
    public static void main(String[] args) {
    Example frame = new Example();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(500,500);
    frame.setVisible(true); }
    }
    Layouts
    

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    JPanel
    2
    

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    Pseudo Calculator
    

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    More About GUI
    Drawing in a Panel
    

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    Extending JPanel
    

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    Extending JPanel
    

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    Connecting the Dots
    

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    Step 1
    

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    Step 2
    

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    Step 3. Undo
    

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    Step 4. Erase
    

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    Let’s Do This
    Events and Listeners
    

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    Release 1. GUI
    

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    Release 2. Action Listeners
    

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    Release 3. Draw Area
    

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    Release 4. Mouse Listeners
    

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    § public void mousePressed (MouseEvent e) {}
    § public void mouseClicked(MouseEvent e) { }
    § public void mouseReleased(MouseEvent e) { }
    § public void mouseEntered(MouseEvent e) { }
    § public void mouseExited(MouseEvent e) { }
    § public void mouseDragged(MouseEvent me) { }
    § public void mouseMoved(MouseEvent e) { }
    MouseListener
    

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    § public void mouseDragged(MouseEvent me) { }
    § public void mouseMoved(MouseEvent e) { }
    MouseMotionListener
    

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    Release 5. Draw + Mouse
    

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    One Last Thing
    Drag and Drop
    

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    Demo
    

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    Main.java
    

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    Workspace.java (part 1 / 2)
    

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    Workspace.java (part 2 / 2)
    

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    City.java (part 1 / 2)
    

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    City.java (part 2 /2)
    

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    Let’s Work
    

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    Questions
    

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    Office Hours
    Tuesday and Thursday 3 - 5 pm
    But an appointment required
    Sent me an email – javiergs@calpoly.edu
    

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    CSC 307 Introduction to Software Engineering
    Javier Gonzalez-Sanchez, Ph.D.
    javiergs@calpoly.edu
    Summer 2023
    Copyright. These slides can only be used as study material for the class CSC308 at Cal Poly.
    They cannot be distributed or used for another purpose.
    

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