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Introduction to Computer Science II COSC 1320/6305 Lecture 4: Defining Classes II (Chapter 5)
5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
5.1 Static Methods and Static Variables 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
From Fahrenheit to Celsius Java Program ,[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved. CLASS Participation A! (pp. 260)
Static Methods ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Pitfall: Invoking a Nonstatic Method Within a Static Method ,[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Tip: You Can Put a main in any Class ,[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Another Class with a main Added (Part 1 of 4) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Another Class with a main Added (Part 2 of 4) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Another Class with a main Added (Part 3 of 4) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Another Class with a main Added (Part 4 of 4) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Temperature.java 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Invocation Counter Java Program ,[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved. CLASS Participation B! (pp. 264)
Static Variables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Static Variables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
InvocationCounter.java 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Static Variables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
The Math Class ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Some Methods in the Class Math (Part 1 of 5) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Some Methods in the Class Math (Part 2 of 5) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Some Methods in the Class Math (Part 3 of 5) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Some Methods in the Class Math (Part 4 of 5) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Some Methods in the Class Math (Part 5 of 5) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Random Numbers ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved. public static double random() double num = Math . random() ;
Wrapper Classes ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Wrapper Classes ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Wrapper Classes ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Automatic Boxing and Unboxing ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Constants and Static Methods in Wrapper Classes ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Constants and Static Methods in Wrapper Classes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
String Processor Java Program ,[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved. CLASS Participation C! (pp. 277)
Some Methods in the Class Character (Part 1 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Some Methods in the Class Character (Part 2 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Some Methods in the Class Character (Part 3 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
5.2 References and Class Parameters 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Toy Class References Java Program ,[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved. CLASS Participation D! (pp. 281)
ToyClass.java 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Variables and Memory ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Variables and Memory ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Variables and Memory ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
References ,[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
References ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
References ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Class Type Variables Store a Reference (Part 1 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Class Type Variables Store a Reference (Part 2 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Assignment Operator with Class Type Variables (Part 1 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Assignment Operator with Class Type Variables (Part 2 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Assignment Operator with Class Type Variables (Part 3 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Class Parameters ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Class Parameters 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Class Parameters 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Class Parameters ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Parameters of a Class Type 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Memory Picture for Display 5.14 (Part 1 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Memory Picture for Display 5.14 (Part 2 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Memory Picture for Display 5.14 (Part 3 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Differences Between Primitive & Class Type Parameters ,[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Comparing Parameters of a Class Type and a Primitive Type (Part 1 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Comparing Parameters of a Class Type and a Primitive Type (Part 2 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
A Toy Class to Use in Display 5.16 (Part 1 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
A Toy Class to Use in Display 5.16 (Part 2 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Pitfall: Use of = and == with Variables of a Class Type ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
The Constant null ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Pitfall: null Pointer Exception ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
The new Operator and Anonymous Objects ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Another Approach to Keyboard Input Using Double.parseDouble (Part 1 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Another Approach to Keyboard Input Using Double . parseDouble (Part 2 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Another Approach to Keyboard Input Using Double.parseDouble (Part 3 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
5.3 Using and Misusing References 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Using and Misusing References ,[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Designing A Person Class: Instance Variables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Designing a Person Class: Constructor ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
A Person Class Constructor ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Designing a Person Class : the Class Invariant ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Designing a Person Class: the Class Invariant ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Designing a Person Class: the equals and datesMatch Methods ,[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Designing a Person Class: the equals Method ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Designing a Person Class: the matchDate Method ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Designing a Person Class: the toString Method ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Copy Constructors ,[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Copy Constructor for a Class with Primitive Type Instance Variables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Copy Constructor for a Class with Class Type Instance Variables ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Copy Constructor for a Class with Class Type Instance Variables ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Copy Constructor for a Class with Class Type Instance Variables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Pitfall: Privacy Leaks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Mutable and Immutable Classes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Mutable and Immutable Classes ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Mutable and Immutable Classes ,[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Deep Copy Versus Shallow Copy ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
5.4 Packages and javadoc 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Packages and import Statements ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
import Statements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
The package Statement ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
The Package java.lang ,[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Package Names and Directories ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
A Package Name 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Pitfall: Subdirectories Are Not Automatically Imported ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
The Default Package ,[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Pitfall: Not Including the Current Directory in Your Class Path ,[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Specifying a Class Path When You Compile ,[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Name Clashes ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Introduction to javadoc ,[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Commenting Classes for javadoc ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Commenting Classes for javadoc ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
@ Tags ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Running javadoc ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
Options for javadoc 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.

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Lecture 4 classes ii

  • 1. Introduction to Computer Science II COSC 1320/6305 Lecture 4: Defining Classes II (Chapter 5)
  • 2. 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 3. 5.1 Static Methods and Static Variables 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8. Another Class with a main Added (Part 1 of 4) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 9. Another Class with a main Added (Part 2 of 4) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 10. Another Class with a main Added (Part 3 of 4) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 11. Another Class with a main Added (Part 4 of 4) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 12. Temperature.java 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 13.
  • 14.
  • 15.
  • 16. InvocationCounter.java 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 17.
  • 18.
  • 19. Some Methods in the Class Math (Part 1 of 5) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 20. Some Methods in the Class Math (Part 2 of 5) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 21. Some Methods in the Class Math (Part 3 of 5) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 22. Some Methods in the Class Math (Part 4 of 5) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 23. Some Methods in the Class Math (Part 5 of 5) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 24.
  • 25.
  • 26.
  • 27.
  • 28.
  • 29.
  • 30.
  • 31.
  • 32. Some Methods in the Class Character (Part 1 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 33. Some Methods in the Class Character (Part 2 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 34. Some Methods in the Class Character (Part 3 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 35. 5.2 References and Class Parameters 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 36.
  • 37. ToyClass.java 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 38.
  • 39.
  • 40.
  • 41.
  • 42.
  • 43.
  • 44. Class Type Variables Store a Reference (Part 1 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 45. Class Type Variables Store a Reference (Part 2 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 46. Assignment Operator with Class Type Variables (Part 1 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 47. Assignment Operator with Class Type Variables (Part 2 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 48. Assignment Operator with Class Type Variables (Part 3 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 49.
  • 50. Class Parameters 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 51. Class Parameters 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 52.
  • 53. Parameters of a Class Type 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 54. Memory Picture for Display 5.14 (Part 1 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 55. Memory Picture for Display 5.14 (Part 2 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 56. Memory Picture for Display 5.14 (Part 3 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 57.
  • 58. Comparing Parameters of a Class Type and a Primitive Type (Part 1 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 59. Comparing Parameters of a Class Type and a Primitive Type (Part 2 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 60. A Toy Class to Use in Display 5.16 (Part 1 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 61. A Toy Class to Use in Display 5.16 (Part 2 of 2) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 62.
  • 63.
  • 64.
  • 65.
  • 66. Another Approach to Keyboard Input Using Double.parseDouble (Part 1 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 67. Another Approach to Keyboard Input Using Double . parseDouble (Part 2 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 68. Another Approach to Keyboard Input Using Double.parseDouble (Part 3 of 3) 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 69. 5.3 Using and Misusing References 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 70.
  • 71.
  • 72.
  • 73.
  • 74.
  • 75.
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  • 81.
  • 82.
  • 83.
  • 84.
  • 85.
  • 86.
  • 87.
  • 88.
  • 89.
  • 90. 5.4 Packages and javadoc 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 91.
  • 92.
  • 93.
  • 94.
  • 95.
  • 96. A Package Name 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.
  • 97.
  • 98.
  • 99.
  • 100.
  • 101.
  • 102.
  • 103.
  • 104.
  • 105.
  • 106.
  • 107. Options for javadoc 5- Copyright © 2010 Pearson Addison-Wesley. All rights reserved.