The final exam for this course is scheduled for Saturday May 6, at 7:00 PM. It will be held in our regular classroom. The exam will be six or seven pages long (compared to four pages for the two in-class tests). It is a cumulative exam, with some emphasis on material that was covered since the second test. You can expect questions that are generally similar in kind to those on the previous tests. The final exam counts for 20% of your grade for the course.
The last question on the test will be a full-page essay question on the topic of program development and how it is supported by the Java programming language. Topics related to program development include pseudocode, step-wise refinement, subroutines, object-oriented programming, design of classes and class hierarchies, state variables, and the design of event-driven GUI programs. You should be prepared to write a coherent and thoughtful essay on this topic.
Don't forget that solutions to quizzes and tests can be found on the course web page. And answers to the end-of-chapter quizzes and exercises in the textbook are also available on-line.
Here is a list of some of the most important things from earlier in the course:
algorithm machine language, high-level programming languages, and compilers the javac command for compiling a Java file on the command line the java command for running a Java program on the command line syntax and semantics public static void main(String args) literals, variables, expressions, and operators Java's primitive types System.out.print(x), System.out.println(), and System.out.println(x) TextIO methods: TextIO.getln(), TextIO.getlnInt(), TextIO.getlnDouble() Math.random(); using Math.random() to make random integers (such as rolling dice) String methods: str.length(), str.charAt(), str.equals(), str.toLowerCase() control statements: if, while, for arrays; referring to array elements as for example A[i] base type of an array elements of an array length of an array, A.length index of an element in an array using "new" to create arrays, for example: new int using for loops to process arrays basic array processing such as summing, counting, finding a max exceptions and the try..catch statement some common exceptions: NullPointerException, ArrayIndexOutOfBoundsException, IllegalArguementException, NumberFormatException how to throw an exception, and why you might want to do so programming style rules and why they are important subroutines and parameters; dummy (formal) parameters vs. actual parameters black boxes; and separation of interface from implementation the access modifiers "public" and "private" return types and the return statement; void the dual nature of classes: the static part and the non-static part scope of a variable; local variables vs. global variables named constants and the "final" modifier; why named constants are used packages; importing classes from packages classes and objects instance methods and instance variables instance variables represent "state" of objects; methods represent "behavior" getter and setter methods and why they are used; why instance variable are often private pointers, references, null assignment and equality-testing for objects constructors; calling a constructor with "new" extending a class subclasses and superclasses inheritance class hierarchies assignment rules for objects: a variable of type Foo can refer to an object belonging to a subclass of Foo
And here is a list of some of the non-GUI things covered since the second test:
polymorphism object-oriented programming class Object; every class is a direct or indirect subclass of Object the access modifier "protected" the special variable "this" using "this" to access member variables hidden by local variables the special variable "super" using "super" to call a method from the superclass abstract classes and abstract methods interfaces (i.e. the Java reserved word "interface") implementing an interface two-dimensional arrays; using nested for loops with two-dimensional arrays using a for-each loop for array processing the parameterized type ArrayList<T> ArrayList methods: list.add(item), list.get(i), list.size(), list.remove(i) using a for-each loop with an ArrayList wrapper classes for the primitive types: Integer, Double, Boolean, etc. Using ArrayList<Integer>, ArrayList<Double>, for lists of primitive type values searching and sorting arrays linear search binary search [ but not the details of the binary search algorithm ] sorting algorithms: selectionSort how to think about the efficiency of an algorithm why binary search is so much faster than linear search
We have covered a lot of GUI stuff in labs and class. Here are some things you should know:
the basic packages for GUI classes: java.awt, java.awt.event, javax.swing using the Graphics class for drawing; g.drawRect(x,y,w,h), g.fillRect(x,y,w,h), g.drawOval(x,y,w,h), g.fillOval(x,y,w,h), g.drawLine(x1,y1,x2,y2), g.drawString(str,x,y), g.setColor(c) using a subclass of JPanel for drawing; the method paintComponent(g) colors; color constants such as Color.RED and Color.BLACK; new Color(r,g,b) elements of GUI programming: components, layout, events, graphics the idea of layout and layout managers; BorderLayout, GridLayout, FlowLayout using a JPanel as a container for building complex GUI layouts the idea of events, listeners, and event-handlers representing the "state" of a program in instance variables a paintComponent method should look at state variables to decide what to draw event-handling methods can base their action on current state and can change the state repaint() should be called when the state is changed event-listeners and listener interfaces; ActionListener and MouseListener a reading knowledge of basic GUI components and their methods, including: the ActionListener interface: public void actionPerformed(ActionEvent evt) ActionEvent methods: evt.getSource(), evt.getActionCommand() the basic MouseListener method: public void mousePressed(MouseEvent evt) MouseEvent methods: evt.getX(), evt.getY() adding event listeners to components; addActionListener, addMouseListener basic components: JButton, JTextField, JLabel using getText() and setText() with buttons, textfields, and labels adding an ActionListener to a JButton: button.addActionListener(listener) adding a MouseListener to a panel: panel.addMouseListener(listener) panel.setLayout(layoutManager), panel.add(component) [ for GridLayout or FlowLayout ] panel.add(component, BorderLayout.position) [ for BorderLayout ] panel.repaint()