introduction to computer science

... 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

... Java // code to read and display GIF image from file import java.awt.*; Import CSLib.*; … DrawingBox g = new DrawingBox(); … Toolkit tools = Toolkit.getDefaultToolkit(): Image mouse = tools.getImage(“C:/KMR/images/mouse.gif”); ... Trang 1   Chapter 6 Iteration Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang ... –1 to terminate”); // read first score score = in.readInt(); while ( score != -1 ) { i++; // insert code to process score // read next score score = in.readInt(); } Trang 14   Reading to

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 Trang 2   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 ... toString() { String result = toString(); return (result + “:” + second); } • To make a call toString in the superclass instead public void toString() { String result = super.toString(); return (result

Ngày tải lên: 11/01/2020, 18:45

... Trang 1Chapter 14Recursion Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by Trang 2Chapter PreviewIn this chapter we ... method would be added to IntList public int length() { Trang 28Converting List to String• This method would be added to IntList public String toString() { String myValue = Integer.toString(value); ... would be added to IntList public IntList nth(int n) { Trang 30Adding Element to End of List• This method would be added to IntList public void addToEndM(int n) { Trang 32Adding Element to List in

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

... Trang 1   Chapter 5 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 Trang ... initialized to default values if no initializers are found – integers and doubles are initialized to 0 – characters are initialized to the null character (ASCII code 0) – booleans are initialized to ... 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

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 1Chapter 1 What is Programming? Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) by S.N Kamin, D Mickunas, E Reingold Trang ... 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 ... 128; 0; 05 +0 Trang 20Running Your Own Java Use an interpreter to execute the compiled program (e.g Java) Return to the editor to correct any errors (or bugs) and start the cycle again Trang

Ngày tải lên: 11/01/2020, 19:29

... Trang 1   Chapter 3 Fundamental Data Types of Java Lecture Slides to Accompany An Introduction to Computer Science Using Java (2nd Edition) byS.N Kamin, D Mickunas, E Reingold Trang ... 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 ... is legal to assign a n int to an char variable char c = 97; // assigns ‘a’ to c • It is possible to perform arithmetic on char variables char ch = ‘a’; ch = ch + 1; // assigns ‘b’ to ch

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

... 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

... 1 ME-430 INTRODUCTION TO COMPUTER AIDED DESIGN TORSIONAL ANALYSIS Using Pro/MECHANICA Pro/ENGINEER Wildfire 2.0 Dr. Herli Surjanhata The U-Joint shown in the figure below is made of steel. A torsion ... done to bring the failure index to below 1.0 in the entire model. Save the results windows as u_joint. Click . 21 Set the Display type to Graph. Set the Quantity to ... surface where torsion will be applied. Step 6: Create a cylindrical coordinate system on the top of the U-Joint. Click on . 30 Change the Type to Capping Surface....

Ngày tải lên: 19/01/2014, 05:20

... My fears are confirmed. I yell at Richard to bid his friend stop. For some reason, he has to go upstairs to turn off the machine (although it appears to be fully portable and self-contained) ... opportunity to reconsider his or her own dream theory and, into the bargain, to learn about the fascinating discoveries of modern sleep science. xii Why did the analysis of dream content fail to become ... chosen to highlight two important points about the doctrine of brain—mind isomorphism. One is that it is just as fruitful to map from the brain to the mind as it is to map from the mind to the...

Ngày tải lên: 24/01/2014, 08:20

... can only touch on, and we have had to be content to quote results in various places as signposts to further study. Nevertheless, our aim has been to provide as much insight as possible into contemporary ... can be used, together with Hubble’s law, to obtain the distance to a galaxy, provided that the galaxy is far enough away for the contribution of random velocities to the redshift to be unimportant. ... because this is too much to be attributed to nucleosynthesis in stars. The steady-state theory is of historical interest, because it is a properly worked out example of an alternative to the big- bang...

Ngày tải lên: 17/03/2014, 13:34

... momentum to knock a proton out of its place in the atom. Even an electron (with its small mass) was too light to do so. Any radiation capable of knocking a proton out of an atom had to consist ... related to the atomic weight. 20 HIGHLIGHTS TO PLASMA a one centimeter length, one could arrange about one hundred million atoms in a row. It would be too tedious and lengthy to go into all the ... the atomic number is just the numb er of protons. Today’s accepted structure of the atom is that the atom is like a small cotton ball composed of protons and neutrons and spinning around this...

Ngày tải lên: 17/03/2014, 14:59

... (1985 Amendment to SDWA). 16. Water Pollution 11 Introduction to Environmental Science 12:008/159:008 Spring 2002 Valdez 16. Water Pollution 4 Introduction to Environmental Science 12:008/159:008 Spring ... light to the bottom Causes algae to bloom Nutrients DO falls BOD rises Less photosynthesis and more decay of organic material Kills benthic plants Blocks light to the bottom Sediment Eutrophication ... problems due to their ability to mimic Hormones, or disrupt metabolic pathways. 16. Water Pollution 5 Introduction to Environmental Science 12:008/159:008 Spring 2002 Surface Water • Photosynthetic...

Ngày tải lên: 29/03/2014, 21:20