introduction to computer science pdf

... is Computer Science? You might be surprised to learn that computer science is not the study of computers A famous computer scientist named Edsgar Dijkstra once quipped that computers are to computer ... computers are to computer science what telescopes are to astronomy The computer is an important tool in computer science, but it is not itself the object of study Since a computer can carry out ... turned a couple computer programming classes into a lucrative career option Computers are so commonplace in the business world today that the ability to understand and program computers might

Ngày tải lên: 25/03/2017, 17:07

... a variable referring to the receiver of the message Trang 22   this – Chaining Constructors • “this” can be used to simplify constructor code by allowing one constructor to call another • We ... variables of the class type • To create instances of the class using constructors • To send messages to instances of the class by invoking class instance methods • To know the class public interface ...  Chapter 7 Classes and Methods III: Static Methods and Variables Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang

Ngày tải lên: 11/01/2020, 18:40

... Chapter Iteration Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter ... do-while statements • demonstrate the use of loop invariants to verify the correctness of loops • show the use of loops in data entry and computer animation     while Loop • Repeated executes body

Ngày tải lên: 11/01/2020, 18:43

... Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter Preview In this chapter we will: • show how to organize ... provided to programmers along with the Java compiler (e.g Math or MouseEvent) – Java expects to find these classes in separate directories or folders • The classes stored in each directory form ... java.lang.Math.sqrt(3); • Using an import statement // to allow unqualified references to // all package classes import package.name.*; // to allow unqualified references to // a particular package class import

Ngày tải lên: 11/01/2020, 18:45

... Chapter 14 Recursion Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, , E Reingold Chapter ... technique is to divide a problem into smaller subproblems • These subproblems may also be divided into smaller subproblems • When the subproblems are small enough to solve directly the process stops ... chapter we will: • introduce recursion as a programming technique • show how recursion can be used to simplify the design of complex algorithms • present several well known recursive algorithms (e.g

Ngày tải lên: 11/01/2020, 18:46

... Trang 1Chapter 11 Java AWT Part |: Mouse Events (Optional) Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang ... show how a program can respond to mouse events (e.g clicks and mouse movements) demonstrate how to implement a listener Interface show how mouse events can be used to build highly interactive ... the event Listener classes send messages to an event manager requesting to be notified when a particular message occurs Event managers send messages to listeners notifying them when a particular

Ngày tải lên: 11/01/2020, 18:47

... Chapter Classes and Methods II Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter ... initialized to default values if no initializers are found – integers and doubles are initialized to – characters are initialized to the null character (ASCII code 0) – booleans are initialized to false ... Reads and stores the hour and minute data String toString() Returns string version of time suitable for printing void setHour(int h) Sets hour to h void setMinute(int m) Sets minute to m int getHour()

Ngày tải lên: 11/01/2020, 19:00

... public class TwoButtons extends Frame { Button redButton, blueButton; public TwoButttons() { super(“Two Buttons Frame”); redButton = new Button(“Red” ); blueButton = new Button(“Blue”); Trang ... possible to use inheritance to allow TwoButtons to become a frame tn Its own right ¢ Note that the UML diagram will show TwoButtons as a subclass of Frame ¢ You will need to use super ( )to set ... Trang 4Can use pack( ) to set size to accommodate preferred sizes of components) Trang 5f = new Frame(“Two Buttons Frame”); redButton = new Button(“Red” ); blueButton = new Button(“Blue”); Trang

Ngày tải lên: 11/01/2020, 19:02

... Trang 1   Chapter 2 Classes and Methods I Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) byS.N Kamin, D Mickunas, E Reingold Trang ... source listings to make things more readable • comments – lines beginning with two slashes // – single or multiple lines enclosed by /* */ – that allow the programmer to insert notes to help other ... predefined collections of programs providing services to many programmers (e.g CSLib.* package used throughout the text) • class heading – needs to be included at the beginning of every program –

Ngày tải lên: 11/01/2020, 19:06

... your application will need • If you guess too low, you will still run out of space • You do not need to use all the elements in an array (but total computer memory is finite) Trang 16   Trang ...  Expressions as Subscripts • Array subscripts do not have to be constants • Array subscripts do need to be integer expressions that evaluate to valid subscript values for the current array allocation ... pointer to the array, not a new array (arrays are passed by reference) • This means that if the method makes changes to the array, these changes are still in effect when the method returns to its

Ngày tải lên: 11/01/2020, 19:27

... Trang 1 Chapter 1 What is Programming? Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by Trang 2 Chapter Preview In this chapter ... * program — a set of directions telling a computer exactly what to do * programming languages — languages for specifying sequences of directions to a computer ¢ algorithm — a sequence of language ... Is pervasive — easy to create multiple objects of the same type — easy to create similar objects without having to rewrite the overlapping code ¢ OOP makes programs easier to understand and more

Ngày tải lên: 11/01/2020, 19:29

... It is legal to assign a char to an int variable int i = ‘a’; // assigns 97 to i • It is legal to assign an int to an char variable char c = 97; // assigns ‘a’ to c • It is possible to perform ... type int is not infinitely large and it is possible to compute a value incorrectly because the value is too large to be stored in an int variable storage location • Unlike the real numbers in mathematics ... Chapter Fundamental Data Types of Java Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold     Chapter

Ngày tải lên: 11/01/2020, 20:03

... Row Totals double [] yearTotals = new double[ROWS]; for (y = 0; y < ROWS; y++) { // compute total for year y yearTotals[y] = 0.0; for (s =0; s < COLS; s++) yearTotals[y] = yearTotals[y] ... Trang 1   Chapter 9 Nested Loops and Two-Dimensional Arrays Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang ... double[COLS]; Trang 15   Computer Graphics • Computer graphics is the study of methods of representing and manipulating images • A two-dimensional array can be used to represent the image to be displayed

Ngày tải lên: 11/01/2020, 20:21

... Trang 1Chapter 15Text Processing and File Input/Output Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang ... Java provides constructors for each class • The StringBuffer class also contains a ToString method to allow easier output Trang 5Sequential Files• Files are stored are stored on disks • In this ... end of line • PrintWriter is a wrapper class provided to convert several data type values to printable forms Trang 14Writing to a File• To make a file available for printing PrintWriter pr =

Ngày tải lên: 11/01/2020, 20:25

... 1Chapter 10Classes and Methods IV: Static Methods and Variables Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang ... it as a message to an object • The class method f in the class C is invoked using the notation f.C( … ) • It has no receiver and cannot refer to instance variables • It can refer to and manipulate ... variable, not one instance per object • Created by adding the modifier static to the variables declaration • Allows variables to be modified once for all class objects • Can be accessed by class methods

Ngày tải lên: 11/01/2020, 20:29

... Trang 1   Chapter 4 Decision Making Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang ... selector variables in Java switch statements Trang 4   Trang 5   Relational Operators < < less than > > greater than <= less than or equal to >= greater than or equal to = ... at 9:00 today”); out.println(“Math meets at 10:00 today”); break; case TUESDAY: case THURSDAY: out.println(“English meets at 9:00 today”); out.println(“Chemistry meets at 10:00 today”);

Ngày tải lên: 11/01/2020, 20:31

... figure below, use to dimension the sketch. Pick to modify the dimensions. Pick it as reference. Pick it as reference. Pick it as reference. 1 ME-430 Introduction to Computer Aided Design ... Click . 18 Click Apply button to change the color of part. Click Close button. Click to save the part. 3 Type in ARM_BRACK for the name ... placement surface. 16 Click to add a new color. To open Color Editor, pick . Pick . 13 ADDING THE ROUNDS Click the Round Tool icon . Enter 5 for the radius...

Ngày tải lên: 27/10/2013, 17:15

... only when you deploy to a private assembly that is stored together with the application. For shared assemblies that are available to all applications on the computer, you need to register the assembly ... solution to this dilemma is to stop using the computer s central Registry, to let all files carry information about themselves as part of the file, including version information, and to separate ... in forcing the client to restart the connection. You write the following code segment to connect to the database to solve the problem: Public Sub DBCon(ConStr As String) ' Connect to the database Try '...

Ngày tải lên: 11/12/2013, 14:15

... Introduction to Semiconductors & Diodes EE106 Analogue Electronics Supplementary Notes F. O’Malley April 2005 Silicon Energy Band Diagram • When an electron jumps to the conduction ... connected to the n region, and the positive terminal is connected to the p region n-Type Semiconductors • n-type material is formed by adding pentavalent (5 valence electrons) impurity atoms – ... in Semiconductors - Doping • In an intrinsic semiconductor, there are relatively few free electrons – pure semi-conductive materials are neither good conductors nor good insulators • Intrinsic...

Ngày tải lên: 13/12/2013, 23:15

... second to last equation to get the second to last unknown. This is repeated until the entire system is solved. An Introduction to Linear Algebra Barry M. Wise and Neal B. Gallagher Eigenvector Research, ... way to calculate X + . x y p Figure 2. The Projection of the vector y onto the vector x. We may also be interested in the projection of a point y onto a subspace. For instance, we may want to ... is the zero matrix to within machine precision. Vector Spaces and Subspaces Before continuing on it is useful to introduce the concept of a vector space. The most important vector spaces are denoted...

Ngày tải lên: 17/01/2014, 04:20