Computer Science 523
Advanced Programming

Summer 2014, The College of Saint Rose

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Class examples will be linked below. Please report any missing examples.

Java Overview/Review

• Hello - the obligitory first example
• Seuss - more options on System.out.print and System.out.println
• HelloYou - keyboard input (with Scanner), variables, String type, String concatenation
• Rectangle - int variables, Scanner's nextInt method, mathematical expressions
• MilesPerGallon - double variables, Scanner's nextDouble method
• RunsScored - named constant, int vs.double math, reading multiple items from a Scanner after a single prompt
• OlderThanJava - Java's if statement
• OlderYoungerThanJava - Java's if-else statement
• NoInterestLoan - JOptionPane dialog boxes, Integer.parseInt
• ShouldWeSki - a nested conditional
• NameAndTown - the if-else-if construct, String's length method
• BooleanDemo - more boolean operators, including && and ||, boolean variables
• MassPikeTolls - System.exit(1), error dialogs, String equals method
• CSOfficesIfElse - motivational example for switch statements
• CSOfficesSwitch - use of switch statements
• LittlePrimes - a switch with multiple cases executing the same code
• Payroll - DecimalFormat objects for custom floating point output format, multiple variable declarations on one line
• PerfectSquares - the while statement, the ++ operator
• MassPikeTollsBetter - better error checking using while loops
• Checkout - the do-while statement, the += shorthand notation
• Sum1To10 - the for statement
• Countdown - counting down with a for loop
• Sum2ToNBy2 - the for statement counting by 2's
• GeometricFractionalSum - a counting loop with a second variable changing on each iteration
• RandomDemo - examples of how to generate various types of random numbers in Java
• GuessingGame - a random number for a children's guess the number game
• MonteCarloPi - using random numbers to approximate Pi, Math.sqrt

File I/O

• HelloWorldFile - opening a file for output with a PrintWriter
• CircleAreas - read in numbers from a keyboard, print circle radii to a file
• AddNumbersFromFile - read in a fixed number of numbers from a file, add them up, a file Scanner
• AddNumbersFromFileSentinel - read in numbers from a file, add them up, ending with a sentinel value
• AddNumbersFromFileAll - read in numbers from a file until no more numbers are available (end of file), Scanner's hasNextInt method
• WordCount - count the number of words in an input file, Scanner's hasNext method
• Shout - read in a file, print its contents to another file but with all words upcased, Scanner's hasNextLine and String's toUpperCase method.

Methods

• BaaBaaBad - motivating example for methods
• BaaBaaBetter - defining a static method
• BaaBaa2Methods - 2 methods
• NumberInfo - a method that takes a parameter
• HoursWorked - passing a String to a method, and using a Scanner to break it into components
• HoursWorked2 - same example, but pass in the Scanner as a parameter
• SumOfSquares - a method that takes two parameters
• Sum1ToN - a method that returns a value
• Sum1ToNBetter - a better version of the previous method
• Distance - a method that computes the distance between two points in the plane
• GradingBreakdown - a longer program that reads lots of inputs, just screaming out for a method to help organize
• GradingBreakdownBetter - the same program with a method introduced to organize the code better

Classes

• RatiosNoClass - a motivating example without classes
• Ratios - a first look at a custom class
• PurchaseTracker - a custom class and a class variable
• DoublePair - a general purpose class that holds a pair of double values
• ObjectPair - a general purpose class that holds a pair of Object values
• GenericPair - a generic pair class using Java generics (type parameters)

Collections

• PurchaseTrackerAll - the ArrayList
• Spells - another ArrayList, the Association
• CourseGrades - ArrayLists in a custom class
• SpellsArray - a first array example
• GradeRangeCounter - arrays of primitive types, initialized arrays
• Matrix2D - a two-dimensional matrix class with some basic methods

Java Applets with Swing

• HelloWorldApplet - a "hello, world" type of program to demonstrate a very simple JApplet, using a JLabel
• ManyJLabels - attempt to add multiple components
• ManyJLabelsContentPane - multiple labels in a content pane
• ButtonClickCounter - the JButton, defining, adding, and implementing an event handler, JLabel's setText method
• ButtonClickCounterPanels - the JPanel, setSize for a window, setFont
• Voting - multiple JButtons, getFont
• VotingMany - arrays of Swing components
• VotingManyLayout - GridLayout
• PrimeFactors - the JTextField, basic exception handling, setText of a JTextField
• TicTacToe - using a 2D array of JButtons, enabling and disabling a component
• FiveGuys - lots more Swing components, layout, and listeners

Recursion

• Sum1ToNRec - a recursive method to compute a mathematical formula
• Powers - a more advanced recursive method example, BigInteger
• RatioListApplet - a recursive data structure

Inheritance

• The examples for this topic are those in Gaddis Chapter 11

Linked Lists

• SimpleLinkedList - a generic singly linked list with an iterator
• ListInterfaceDemo - a programming demonstrating some API classes that implement java.util.List

Searching and Sorting

• BinSearch - binary search on ints and Comparables