CMPT 166 Spring 2011 HW Assignments

HW1 (due Tue 18 Jan) (10pts)

1. Compare and contrast the JDK and the JRE. [2]
2. Compare and contrast compiled vs. interpreted languages. [1]
3. What do comments look like in Java? [1]
4. Write a minimal "Hello, World!" program in Java. [3]
5. Describe the eight primitive types in Java, and say something about their differences. [2]
6. What is the difference between an expression and a statement? [1]

HW2 (due Thu 27 Jan) (10pts)

1. The controlling expression for a switch statement includes all of the following types except: [1]
   1. char
   2. byte
   3. int
   4. double
2. A compound statement is enclosed between: [1]
   1. [ ]
   2. { }
   3. ( )
   4. < >
3. The looping mechanism that always executes at least once is the _____________ statement. [1]
   1. if ... else
   2. do ... while
   3. while
   4. for
4. A variable whose meaning is confined to an object of a class is called an [1]
   1. instance variable
   2. local variable
   3. global variable
   4. none of the above
5. A variable whose meaning is confined to a method definition is called an [1]
   1. instance variable
   2. local variable
   3. global variable
   4. none of the above
6. A method's signature is composed of what elements of its definition? [1]
7. Write an if-else statement to compute the amount of shipping due on an online sale. If the cost of the purchase is less than $20, the shipping cost is $5.99. If the cost of the purchase over $20 and at most $65, the shipping cost is $10.99. If the cost of the purchase is over $65, the shipping cost is $15.99. [4]

HW3 (due Thu 17 Feb) (20pts)

1. A programming style that uses a signal and response approach to programming is called: [1]
   1. Object Oriented Programming
   2. Structured Programming
   3. Event-driven Programming
   4. Bottom-up Programming
2. A button component should have a registered _____________ associated with it. [1]
   1. pixel
   2. JFrame
   3. listener
   4. none of the above
3. The _____________ manager places components into five regions. [1]
   1. BorderLayout
   2. FlowLayout
   3. GridLayout
   4. AbsoluteLayout
4. A _____________ is an object that is a simple container class that groups other objects. [1]
   1. JPanel
   2. JMenu
   3. JButton
   4. JTextArea
5. Explain the model-view-controller pattern when applied to a typical GUI. [3]
6. Name and describe all the classes involved with writing a serializable object out to a file named "output.txt". [3]

HW4 (due Thu 24 Mar) (20pts)

1. The method paint() has one parameter of type: [1]
   1. Shape
   2. Graphics
   3. Image
   4. String
2. Any change to graphics being displayed on the screen requires a call to the ____________ method to update the graphics. [1]
   1. paint()
   2. repaint()
   3. update()
   4. all of the above
3. The programming statements used to accomplish a thread's task should be included in the method: [1]
   1. start()
   2. init()
   3. run()
   4. none of the above
4. When a server executes the accept() method it: [2]
   1. Blocks and waits for a connection
   2. Checks for a connection and if there is none it exits
   3. Blocks but in a new thread
   4. Any of the above, depending on the input parameters to accept()
5. In a Swing program, the only thread that should change the GUI is the ______________ : [2]
   1. main() thread
   2. SwingWorker thread
   3. GUI thread
   4. event dispatch thread
6. What is a socket? [3]
7. Compare and contrast TCP and UDP. [4]
8. Describe how you would use multithreading to design a TCP server that can handle multiple clients. [5]

HW5 (due Thu 7 Apr) (20pts)

1. What is an Android Activity? Is it the same as an application? Discuss the relationship between an Activity and an app. [5]
2. Name and describe the three states of an Activity's lifecycle. [6]
3. Describe how to design an Android application which is internationalization-ready (i.e., its text can be easily translated). [5]
4. Name and describe two Creational design patterns from the "Gang of Four" (GoF) book. [4]