Class Notes

• Loop Invariants
• Logical Identities
• Binary numbers and 2's complement arithmetic

Example Programs

• HelloWorld Program
• Boom Program variables, the while loop
• Sum of consecutive integers
• Sum of Odd numbers Program
• Warmup for Stars.java No method invocations
• Stars.java: Introduction to method invocations
• Factorial Introduction to Loop Invariants
• Example of variable's scope
• Example of variable's lifetime
• Example of recursion demonstration of frames for local variables
  • Boom program again, this time using recursion
  • Factorial program again, this time using recursion
• ObjectExample Introduction to Objects
  • ObjectOne
  • ObjectOneTest
  • ObjectTwo
  • ObjectTwoTest
• Palindrome
• ExtendsAndImplements
• Review of Java
• GUI programming
• third swing example: MVC ( Model-View-Controller ) pattern for GUI's.
  • partially completed (june 12-th snapshot) Implements View and Controller
  • completed example. Implements Model ( Compared to june 12: MyModel created and small changes to other classes.)
• Traffic Light Introduces threads and the Runnable interface. (Applet)
• Summary

Homework

• Fibonacci Program To complete for homework
• Fibonacci Program Completed
• StarsOfStars: To complete for homework
• StarsOfStars: Completed
• Sum of consecutive integers now, using recursion To complete for homework
• PrintPrimes Assigned for homework
• SmallestPower Assigned for homework
• PrintInReverse
• Selection Sort.
  • FindMax is almost a sorting routine. If demonstrates how to find the maximum element in an array, and how to swap it with, say, the last element of the array. Repeating this over the length-1 elements in the array 0 through length-2 will put the second largest number in the cell just previous to the last cell of the array. And so forth, sorting the array. Complete for homework.
• Marienbad Homework
  • HandleInput.java
  • Pair.java
• Read these chapters in the class text: 1-8 and 12.
• TurtleOneStep (View w/ swing-enabled browser.)
• Make the turtle walk (use TrafficLight as a model).
  Solution as developed in class June 18 and 19, 2002 (all blemishes included!).

• How to get input.
• Collected Syntax for Java.
• JBuilder Personal 6, Borland's IDE (Integrated Development Environment) for Java is offered for free.
  Please install on your computer and use for this course.