Final Study Guide

1. The final will be given on Tuesday, December 4 from 7:10 to 10pm in room 14-301.
2. You should bring a scantron form and your Android phone and cable if you have not turned them in already.
3. You should bring a pencil and eraser.
4. Dr. Janzen will have office hours in his office or 14-256 on Tuesday, December 4 from 3pm to 5pm.
5. You may not use any study aids during the exam. For instance, books, notes, friends, phones, computers will not be allowed.
6. The exam will contain multiple choice, fill-in-the-blank, short answer, and programming questions.
7. Although the exam is comprehensive, it will focus on topics from the last half of the course, primarily Java and Android
8. You may be asked questions regarding:
• material presented during lecture and lab - be sure to review notes linked from the course schedule
• reading assignments
• the course project including topics such as (but not limited to) process, organization, domain, technology
• the functionality of Android phones (e.g. touch, magnetometer, accelerometer, internet, GPS, wifi, internet)
• capabilities and limitations of Scratch
• capabilities and limitations of App Inventor
• Java programming fundamentals
• answer questions about programming and Java basics (e.g. what is a data type?, what is the difference between if and while?)
• be able to write short programs that use class, if/else, for, while, primitive data types, built-in operators (+,-,*,/,%,++,==,!=,&&,||), functions/methods
• you are encouraged to carefully review labs 4 through 9
• you may also find value in doing sample problems at codingbat.com
• sample problems are also provided below
• program testing fundamentals
• be able to write JUnit tests (e.g. use assertEquals and assertTrue as in this example)
• Android programming fundamentals
• answer questions about Android programming concepts (e.g. what is an Activity?, what is an Intent?, what is a layout?, what is a view?, what are possible values for layout_width in an xml layout file?)
• be able to write short programs similar to the HelloWorld, Rock/Paper/Scissors, and TicTacToe programs in the labs
• be able to write methods similar to Intents and Shared Preferences
• Below are some sample final exam programming questions. Some exam questions will likely come from this list. For each of the Java questions, be able to write a set of JUnit tests and the method or class as appropriate.
  • Write an onCreate method in an Activity class that retrieves a TextView with id 'text1' from a layout file name 'finalexam1.xml', and sets the text displayed to be "I got an A".
  • Write an onCreate method in an Activity class that retrieves a Button with id 'button1' from a layout file name 'finalexam2.xml', and registers a click listener that starts another activity named 'Game.class'. Use an anonymous inner class.
  • Write an xml layout file that declares a LinearLayout with a Button with id 'button1' followed by a TextView with id 'text1'.
  • Write the code that would go in onPause() and onResume() to save then restore the contents of an EditText with id 'joke1' using SharedPreferences.
  • Write a method that accepts a number x and computes x² + 3.
  • Write a method that accepts a number x and computes 4x³ + 3x² + 9
  • Write a method that accepts A, B, and C, and x, and computes Ax² + Bx + C
  • Write a method that returns the length of the longer of two input strings.
  • Write a method that returns the smallest of three given numbers.
  • Write a method that returns the largest of three given numbers.
  • Write a method that returns the "middle" of three given numbers.
  • An etude has a title, a composer, and a difficulty. Design a class for etudes, and give three examples.
  • Write a method named 'notTooDifficult', that accepts an etude and a difficulty and returns 'true' when the etude is easier than the given difficulty.
  • A phone has a maker, a year of construction, and a quality. Design a class for phones, and give three examples.
  • Write a method named 'oldPhone', that accepts a phone and a year of construction and returns true when the phone was built in or before the given year.
  • A singer has a height, a weight, a name, and a famousness ranking. Design a class for singers, and give three examples.
  • Write a method named 'shortNameSinger', that accepts a singer and returns true if the singer's name is shorter than 10 characters.
  • Write a method that returns true exactly when an array of ints contains a 6.
  • Write a method that returns true exactly when an array of strings contains "boo".
  • Write a method that returns true exactly when an array of booleans contains a false.
  • Write a method that returns true exactly when an array of ints contains an int greater than 12.
  • Write a method that returns true exactly when an array of strings contains a string longer than 4 characters.
  • Write a method that returns true exactly when it is given a number for which x⁹ + 3x + 2 = 0
  • Write a method that accepts an array of ints and an int 'n' and returns true exactly when 'n' occurs in the array.
  • Write a method that accepts an array of ints and an int 'x' and returns the index of the first occurrence of the int 'x' in the array.
  • Write a method that accepts an array of strings and a string 's' and returns the index of the first occurrence of the string 's' in the array.
  • Write a method that accepts an array of numbers and returns their sum.
  • Write a method that accepts an array of numbers and returns their product.
  • Write a method that accepts an array of non-negative numbers and a size of the array, and returns the largest number in the array. If called with an empty array, the result should be zero.
  • Write a method named 'putAtEnd' that accepts an array of ints, the number of elements currently in the array, and a single int, and adds the single int at the end of the array.
  • Write a method named 'append' that accepts two arrays of ints and appends them together.
  • Write a method named 'reverse' that accepts an array of ints and returns the reversed list.
  • Write a method named 'countPizza' that accepts an array of strings and returns the number of times that 'pizza' occurs in it.
  • Write a method named 'countBiggerThan9' that accepts an array of ints and returns the number of elements that are strictly larger than 9.
  • Write a method named count-falses that accepts an array of booleans and returns the number of booleans that are false.
  • Write a method that accepts an array of numbers and computes their mean.