Recitation 02/02/07 Defining Classes and Methods. Chapter 4
|
|
- Blaise Harmon
- 5 years ago
- Views:
Transcription
1 Recitation 02/02/07 Defining Classes and Methods 1
2 Miscellany Project 2 due last night Exam 1 (Ch 1-4) Thursday, Feb. 8, 8:30-9:30pm PHYS 112 Sample Exam posted Project 3 due Feb :00pm check newsgroup! 2
3 Methods Two kinds of methods: Methods that return a single value nextint() Methods that perform some action other than returning a single value void methods println( m@ ) 3
4 void Method Definitions example public void writeouput() { System.out.println( Name: + name); System.out.println( Age: + age); } Such methods are called void methods. 4
5 Methods That Return a Value example public int fivefactorial(); { int factorial = 5*4*3*2*1; return factorial; } As before, the method definition consists of the method heading and the method body. The return type replaces void. 5
6 Accessor and Mutator Methods Appropriate access to an instance variable declared private is provided by an accessor method which is declared public. Typically, accessor methods begin with the word get, as in getname. Only provide when access is needed 6
7 Accessor and Mutator Methods, cont. Appropriate changes to an instance variable declared private are provided by an mutator method which is declared public. Typically, mutator methods begin with the word set, as in setname. Only provide when needed 7
8 Allocating Memory for a Reference and an Object A declaration such as SpeciesFourthTry s; creates a variable s that can hold a memory address (compile time) A statement such as s = new SpeciesFourthTry(); allocates memory for an object of type SpeciesFourthTry. (runtime) 8
9 == with Variables of a Class Type 9
10 == with Variables of a Class Type, cont. When used with variables of a class type, == tests if the variables are aliases of each other, not if they reference objects with identical data. To test for equality of objects in the intuitive sense, define and use an appropriate equals method. 10
11 == with Variables of a Class Type class Species 11
12 == with Variables of a Class Type class SpeciesEqualsDemo 12
13 Method equals The definition of method equals depends on the circumstances. In some cases, two objects may be equal when the values of only one particular instance variable match. In other cases, two objects may be equal only when the values of all instance variables match. Always name the method equals. 13
14 Boolean-Valued Methods A method that returns a value of type boolean is called a boolean-valued method. Method equals produces and returns a value of type boolean. The invocation of a boolean-valued method can be used as the condition of an if-else statement, a while statement, etc. 14
15 Boolean-Valued Methods, cont. The value returned by a boolean-valued method can be stored in a variable boolean areequal = s1.equals(s2); Any method that returns a boolean value can be used in the same way. 15
16 Class Parameters Recall When the assignment operator is used with objects of a class type, a memory address is copied, creating an alias. When the assignment operator is used with a primitive type, a copy of the primitive type is created. 16
17 Class Parameters, cont. When a parameter in a method invocation is a primitive type, the corresponding formal parameter is a copy of the primitive type. 17
18 Class Parameters, cont. When a parameter in a method invocation is a reference to a class type (i.e. a named object), the corresponding formal parameter is a copy of that reference (i.e. an identically valued reference to the same memory location). 18
19 Class Parameters, cont. Example if (s1.equals(s2)) public boolean equals (Species otherobject) causes otherobject to become an alias of s2, referring to the same memory location, which is equivalent to otherobject = s2; 19
20 Class Parameters, cont. Any changes made to the object named otherobject will be done to the object named s2, and vice versa, because they are the same object. If otherobject is a formal parameter of a method, the otherobject name exists only as long as the method is active. 20
21 Comparing Class Parameters and Primitive-Type Parameters A method cannot change the value of a variable of a primitive type passed into the method. A method can change the value(s) of the instance variable(s) of a class type passed into the method. 21
22 The Graphics Class An object of the class Graphics represents an area of the screen. The class Graphics also has methods that allow it do draw figures and text in the area of the screen it represents. 22
23 23
24 The Graphics Class, cont. A Graphics object has instance variables that specify an area of the screen In examples seen previously, the Graphics object represented the area corresponding to the inside of an applet. 24
25 The Graphics Class, cont. When an applet is run, a suitable Graphics object is created automatically and is used as an argument to the applet s paint method when the paint method is (automatically) invoked. The applet library code does all this for us. To add this library code to an applet definition, use extends JApplet 25
26 26
27 27
28 Programming Example 28
29 The init Method An init method can be defined when an applet is written. The method init (like the method paint) is called automatically when the applet is run. The paint method is used only for things like drawing. All other actions in an applet (adding labels, buttons, etc.) either occur or start in the init method. 29
30 Adding Labels to an Applet A label is another way to add text to an applet. 30
31 Adding Labels to an Applet, cont. class LabelDemo 31
32 The Content Pane Think of the content pane as inside of the applet. Container contentpane = getcontentpane(); When components are added to an applet, they are added to its content pane. Think: adding picture to picture frame The content pane is an object of type Container. 32
33 The Content Pane, cont. A named content pane can do things such as setting color contentpane.setbackground(color.white); or specifying how the components are arranged contentpane.setlayout (new FlowLayout()); 33
34 The Content Pane, cont. or adding labels JLabel label1 = new JLabel( Hello ); contentpane.add(label1); 34
35 Exam 1 Information Time/Location Thursday, Feb 8, 8:30-9:30pm, Physics 112 Material Covered Chapters 1-4 Format Multiple Choice Programming Old exam on course website 35
36 Exam 1 Information Topics Encapsulation, Polymorphism, information hiding Accessor/Mutator methods Objects, Classes public/private modifiers Java naming conventions Primitive types vs. class types 36
37 Exam 1 Information Topics, cont Defining classes and methods (including the main method) Void methods vs. methods that return a value Looping structures (while, do-while, for) If-else, switch Primitive types vs. class types (and memory representation) Scanner class for input, System.out for output 37
38 Exam 1 Information Topics, cont Arithmetic expressions Boolean variables String methods == vs. equals methods Basic graphics methods 38
39 Questions 39
Defining Classes and Methods
Defining Classes and Methods Chapter 4 Chapter 4 1 Basic Terminology Objects can represent almost anything. A class defines a kind of object. It specifies the kinds of data an object of the class can have.
More informationObjectives. Defining Classes and Methods. Objectives. Class and Method Definitions: Outline 7/13/09
Objectives Walter Savitch Frank M. Carrano Defining Classes and Methods Chapter 5 Describe concepts of class, class object Create class objects Define a Java class, its methods Describe use of parameters
More informationDefining Classes and Methods
Walter Savitch Frank M. Carrano Defining Classes and Methods Chapter 5 ISBN 0136091113 2009 Pearson Education, Inc., Upper Saddle River, NJ. All Rights Reserved Objectives Describe concepts of class, class
More informationDefining Classes and Methods. Objectives. Objectives 6/27/2014. Chapter 5
Defining Classes and Methods Chapter 5 Objectives Describe concepts of class, class object Create class objects Define a Java class, its methods Describe use of parameters in a method Use modifiers public,
More informationDefining Classes and Methods
Defining Classes and Methods Chapter 5 Objects and References: Outline Variables of a Class Type Defining an equals Method for a Class Boolean-Valued Methods Parameters of a Class Type Variables of a Class
More informationChapter 4 Defining Classes I
Chapter 4 Defining Classes I This chapter introduces the idea that students can create their own classes and therefore their own objects. Introduced is the idea of methods and instance variables as the
More information5. Defining Classes and Methods
5. Defining Classes and Methods Harald Gall, Prof. Dr. Institut für Informatik Universität Zürich http://seal.ifi.uzh.ch/info1 Objectives Describe and define concepts of class, class object Describe use
More informationDefining Classes and Methods
Defining Classes and Methods Chapter 5b Information Hiding Programmer using a class method need not know details of implementation Only needs to know what the method does Information hiding: Designing
More informationEECS168 Exam 3 Review
EECS168 Exam 3 Review Exam 3 Time: 2pm-2:50pm Monday Nov 5 Closed book, closed notes. Calculators or other electronic devices are not permitted or required. If you are unable to attend an exam for any
More information5. Defining Classes and Methods
5. Defining Classes and Methods Harald Gall, Prof. Dr. Institut für Informatik Universität Zürich http://seal.ifi.uzh.ch/info1 Objectives! Describe and define concepts of class and object! Describe use
More informationAPCS Semester #1 Final Exam Practice Problems
Name: Date: Per: AP Computer Science, Mr. Ferraro APCS Semester #1 Final Exam Practice Problems The problems here are to get you thinking about topics we ve visited thus far in preparation for the semester
More informationInheritance. Chapter 7. Chapter 7 1
Inheritance Chapter 7 Chapter 7 1 Introduction to Inheritance Inheritance allows us to define a general class and then define more specialized classes simply by adding new details to the more general class
More informationExam 1 Prep. Dr. Demetrios Glinos University of Central Florida. COP3330 Object Oriented Programming
Exam 1 Prep Dr. Demetrios Glinos University of Central Florida COP3330 Object Oriented Programming Progress Exam 1 is a Timed Webcourses Quiz You can find it from the "Assignments" link on Webcourses choose
More informationHandout 7. Defining Classes part 1. Instance variables and instance methods.
Handout 7 CS180 Programming Fundamentals Spring 15 Page 1 of 8 Handout 7 Defining Classes part 1. Instance variables and instance methods. In Object Oriented programming, applications are comprised from
More informationChapter 4. Defining Classes I
Chapter 4 Defining Classes I Introduction Classes are the most important language feature that make object-oriented programming (OOP) possible Programming in Java consists of defining a number of classes
More informationDefining Classes and Methods
Defining Classes and Methods Chapter 5 Modified by James O Reilly Class and Method Definitions OOP- Object Oriented Programming Big Ideas: Group data and related functions (methods) into Objects (Encapsulation)
More informationSPRING 13 CS 0007 FINAL EXAM V2 (Roberts) Your Name: A pt each. B pt each. C pt each. D or 2 pts each
Your Name: Your Pitt (mail NOT peoplesoft) ID: Part Question/s Points available Rubric Your Score A 1-6 6 1 pt each B 7-12 6 1 pt each C 13-16 4 1 pt each D 17-19 5 1 or 2 pts each E 20-23 5 1 or 2 pts
More information11/19/2014. Objects. Chapter 4: Writing Classes. Classes. Writing Classes. Java Software Solutions for AP* Computer Science A 2nd Edition
Chapter 4: Writing Classes Objects An object has: Presentation slides for state - descriptive characteristics Java Software Solutions for AP* Computer Science A 2nd Edition by John Lewis, William Loftus,
More informationChapter 6 Introduction to Defining Classes
Introduction to Defining Classes Fundamentals of Java: AP Computer Science Essentials, 4th Edition 1 Objectives Design and implement a simple class from user requirements. Organize a program in terms of
More informationCS180 Recitation. More about Objects and Methods
CS180 Recitation More about Objects and Methods Announcements Project3 issues Output did not match sample output. Make sure your code compiles. Otherwise it cannot be graded. Pay close attention to file
More informationChapter 4: Writing Classes
Chapter 4: Writing Classes Java Software Solutions Foundations of Program Design Sixth Edition by Lewis & Loftus Writing Classes We've been using predefined classes. Now we will learn to write our own
More informationCS 251 Intermediate Programming Methods and Classes
CS 251 Intermediate Programming Methods and Classes Brooke Chenoweth University of New Mexico Fall 2018 Methods An operation that can be performed on an object Has return type and parameters Method with
More informationCS 251 Intermediate Programming Methods and More
CS 251 Intermediate Programming Methods and More Brooke Chenoweth University of New Mexico Spring 2018 Methods An operation that can be performed on an object Has return type and parameters Method with
More informationReviewing for the Midterm Covers chapters 1 to 5, 7 to 9. Instructor: Scott Kristjanson CMPT 125/125 SFU Burnaby, Fall 2013
Reviewing for the Midterm Covers chapters 1 to 5, 7 to 9 Instructor: Scott Kristjanson CMPT 125/125 SFU Burnaby, Fall 2013 2 Things to Review Review the Class Slides: Key Things to Take Away Do you understand
More information1 Epic Test Review 2 Epic Test Review 3 Epic Test Review 4. Epic Test Review 5 Epic Test Review 6 Epic Test Review 7 Epic Test Review 8
Epic Test Review 1 Epic Test Review 2 Epic Test Review 3 Epic Test Review 4 Write a line of code that outputs the phase Hello World to the console without creating a new line character. System.out.print(
More informationEncapsulation. You can take one of two views of an object: internal - the structure of its data, the algorithms used by its methods
Encapsulation You can take one of two views of an object: internal - the structure of its data, the algorithms used by its methods external - the interaction of the object with other objects in the program
More informationJava How to Program, 10/e. Copyright by Pearson Education, Inc. All Rights Reserved.
Java How to Program, 10/e Education, Inc. All Rights Reserved. Each class you create becomes a new type that can be used to declare variables and create objects. You can declare new classes as needed;
More informationMethods and Data (Savitch, Chapter 5)
Methods and Data (Savitch, Chapter 5) TOPICS Invoking Methods Return Values Local Variables Method Parameters Public versus Private 2 public class Temperature { public static void main(string[] args) {
More informationIntroduction to Programming Using Java (98-388)
Introduction to Programming Using Java (98-388) Understand Java fundamentals Describe the use of main in a Java application Signature of main, why it is static; how to consume an instance of your own class;
More informationExam 1 - (20 points)
Exam 1 - (20 points) Answer all of the following questions. READ EACH QUESTION CAREFULLY. Fill the correct bubble on your scantron sheet. Each correct answer is worth 1 point (unless otherwise stated).
More informationPrinciples of Object Oriented Programming. Lecture 4
Principles of Object Oriented Programming Lecture 4 Object-Oriented Programming There are several concepts underlying OOP: Abstract Types (Classes) Encapsulation (or Information Hiding) Polymorphism Inheritance
More informationCSCI-142 Exam 1 Review September 25, 2016 Presented by the RIT Computer Science Community
CSCI-12 Exam 1 Review September 25, 2016 Presented by the RIT Computer Science Community http://csc.cs.rit.edu 1. Provide a detailed explanation of what the following code does: 1 public boolean checkstring
More informationCS111: PROGRAMMING LANGUAGE II
CS111: PROGRAMMING LANGUAGE II Computer Science Department Lecture 1(c): Java Basics (II) Lecture Contents Java basics (part II) Conditions Loops Methods Conditions & Branching Conditional Statements A
More informationChapter 6 Lab Classes and Objects
Gaddis_516907_Java 4/10/07 2:10 PM Page 51 Chapter 6 Lab Classes and Objects Objectives Be able to declare a new class Be able to write a constructor Be able to write instance methods that return a value
More informationAnnouncement. Agenda 7/31/2008. Polymorphism, Dynamic Binding and Interface. The class will continue on Tuesday, 12 th August
Polymorphism, Dynamic Binding and Interface 2 4 pm Thursday 7/31/2008 @JD2211 1 Announcement Next week is off The class will continue on Tuesday, 12 th August 2 Agenda Review Inheritance Abstract Array
More informationCSE115 / CSE503 Introduction to Computer Science I Dr. Carl Alphonce 343 Davis Hall Office hours:
CSE115 / CSE503 Introduction to Computer Science I Dr. Carl Alphonce 343 Davis Hall alphonce@buffalo.edu Office hours: Tuesday 10:00 AM 12:00 PM * Wednesday 4:00 PM 5:00 PM Friday 11:00 AM 12:00 PM OR
More informationChapter 5: Enhancing Classes
Chapter 5: Enhancing Classes Presentation slides for Java Software Solutions for AP* Computer Science 3rd Edition by John Lewis, William Loftus, and Cara Cocking Java Software Solutions is published by
More informationJava Object Oriented Design. CSC207 Fall 2014
Java Object Oriented Design CSC207 Fall 2014 Design Problem Design an application where the user can draw different shapes Lines Circles Rectangles Just high level design, don t write any detailed code
More informationReferences. Chapter 5: Enhancing Classes. Enhancing Classes. The null Reference. Java Software Solutions for AP* Computer Science A 2nd Edition
Chapter 5: Enhancing Classes Presentation slides for Java Software Solutions for AP* Computer Science A 2nd Edition by John Lewis, William Loftus, and Cara Cocking Java Software Solutions is published
More informationAP Computer Science Chapter 10 Implementing and Using Classes Study Guide
AP Computer Science Chapter 10 Implementing and Using Classes Study Guide 1. A class that uses a given class X is called a client of X. 2. Private features of a class can be directly accessed only within
More informationMidterms Save the Dates!
University of British Columbia CPSC 111, Intro to Computation Alan J. Hu Instance Variables if Statements Readings This Week s Reading: Review Ch 1-4 (that were previously assigned) (Reminder: Readings
More informationCOMP 202. More on OO. CONTENTS: static revisited this reference class dependencies method parameters variable scope method overloading
COMP 202 CONTENTS: static revisited this reference class dependencies method parameters variable scope method overloading More on OO COMP 202 Objects 3 1 Static member variables So far: Member variables
More informationBinghamton University. CS-140 Fall Problem Solving. Creating a class from scratch
Problem Solving Creating a class from scratch 1 Recipe for Writing a Class 1. Write the class boilerplate stuff 2. Declare Fields 3. Write Creator(s) 4. Write accessor methods 5. Write mutator methods
More informationAnatomy of a Class Encapsulation Anatomy of a Method
Writing Classes Writing Classes We've been using predefined classes. Now we will learn to write our own classes to define objects Chapter 4 focuses on: class definitions instance data encapsulation and
More informationLecture 2. COMP1406/1006 (the Java course) Fall M. Jason Hinek Carleton University
Lecture 2 COMP1406/1006 (the Java course) Fall 2013 M. Jason Hinek Carleton University today s agenda a quick look back (last Thursday) assignment 0 is posted and is due this Friday at 2pm Java compiling
More informationJava for Non Majors. Final Study Guide. April 26, You will have an opportunity to earn 20 extra credit points.
Java for Non Majors Final Study Guide April 26, 2017 The test consists of 1. Multiple choice questions 2. Given code, find the output 3. Code writing questions 4. Code debugging question 5. Short answer
More informationIntroduction. Introduction
Introduction Many Java application use a graphical user interface or GUI (pronounced gooey ). A GUI is a graphical window or windows that provide interaction with the user. GUI s accept input from: the
More informationJava Applets. Last Time. Java Applets. Java Applets. First Java Applet. Java Applets. v We created our first Java application
Last Time v We created our first Java application v What are the components of a basic Java application? v What GUI component did we use in the examples? v How do we write to the standard output? v An
More informationTutorials. Tutorial every Friday at 11:30 AM in Toldo 204 * discuss the next lab assignment
60-212 subir@cs.uwindsor.ca Phone # 253-3000 Ext. 2999 web site for course www.cs.uwindsor.ca/60-212 Dr. Subir Bandyopadhayay Website has detailed rules and regulations All assignments and labs will be
More informationCS1083 Week 2: Arrays, ArrayList
CS1083 Week 2: Arrays, ArrayList mostly review David Bremner 2018-01-08 Arrays (1D) Declaring and using 2D Arrays 2D Array Example ArrayList and Generics Multiple references to an array d o u b l e prices
More informationCS113: Lecture 4. Topics: Functions. Function Activation Records
CS113: Lecture 4 Topics: Functions Function Activation Records 1 Why functions? Functions add no expressive power to the C language in a formal sense. Why have them? Breaking tasks into smaller ones make
More informationComp 248 Introduction to Programming Chapter 4 - Defining Classes Part A
Comp 248 Introduction to Programming Chapter 4 - Defining Classes Part A Dr. Aiman Hanna Department of Computer Science & Software Engineering Concordia University, Montreal, Canada These slides has been
More informationJava for Non Majors Spring 2018
Java for Non Majors Spring 2018 Final Study Guide The test consists of 1. Multiple choice questions - 15 x 2 = 30 points 2. Given code, find the output - 3 x 5 = 15 points 3. Short answer questions - 3
More informationIntroduction to Programming (Java) 4/12
Introduction to Programming (Java) 4/12 Michal Krátký Department of Computer Science Technical University of Ostrava Introduction to Programming (Java) 2008/2009 c 2006 2008 Michal Krátký Introduction
More informationVariables and Primitive Types
CS159 Variables and Primitive Types Java Primitive Types: byte, short, int, long, float, double, boolean, char Example int a; int b; boolean aisless; a = 3; b = 4; aisless = a < b; if (aisless && b < a)
More informationDefining Classes and Methods
Walter Savitch Frank M. Carrano Defining Classes and Methods Chapter 5 Class and Method Definitions: Outline Class Files and Separate Compilation Instance Variables Methods The Keyword this Local Variables
More informationF1 A Java program. Ch 1 in PPIJ. Introduction to the course. The computer and its workings The algorithm concept
F1 A Java program Ch 1 in PPIJ Introduction to the course The computer and its workings The algorithm concept The structure of a Java program Classes and methods Variables Program statements Comments Naming
More informationData Structures. Data structures. Data structures. What is a data structure? Simple answer: a collection of data equipped with some operations.
Data Structures 1 Data structures What is a data structure? Simple answer: a collection of data equipped with some operations. Examples Lists Strings... 2 Data structures In this course, we will learn
More informationWhat will this print?
class UselessObject{ What will this print? int evennumber; int oddnumber; public int getsum(){ int evennumber = 5; return evennumber + oddnumber; public static void main(string[] args){ UselessObject a
More informationCS171:Introduction to Computer Science II
CS171:Introduction to Computer Science II Department of Mathematics and Computer Science Li Xiong 9/7/2012 1 Announcement Introductory/Eclipse Lab, Friday, Sep 7, 2-3pm (today) Hw1 to be assigned Monday,
More informationComputer Science II (20082) Week 1: Review and Inheritance
Computer Science II 4003-232-08 (20082) Week 1: Review and Inheritance Richard Zanibbi Rochester Institute of Technology Review of CS-I Syntax and Semantics of Formal (e.g. Programming) Languages Syntax
More information(A) 99 (B) 100 (C) 101 (D) 100 initial integers plus any additional integers required during program execution
Ch 5 Arrays Multiple Choice 01. An array is a (A) (B) (C) (D) data structure with one, or more, elements of the same type. data structure with LIFO access. data structure, which allows transfer between
More informationReview: Object Diagrams for Inheritance. Type Conformance. Inheritance Structures. Car. Vehicle. Truck. Vehicle. conforms to Object
Review: Diagrams for Inheritance - String makemodel - int mileage + (String, int) Class #3: Inheritance & Polymorphism Software Design II (CS 220): M. Allen, 25 Jan. 18 + (String, int) + void
More informationObjects and Classes -- Introduction
Objects and Classes -- Introduction Now that some low-level programming concepts have been established, we can examine objects in more detail Chapter 4 focuses on: the concept of objects the use of classes
More informationCompuScholar, Inc. 9th - 12th grades
CompuScholar, Inc. Alignment to the College Board AP Computer Science A Standards 9th - 12th grades AP Course Details: Course Title: Grade Level: Standards Link: AP Computer Science A 9th - 12th grades
More informationTeenCoder : Java Programming (ISBN )
TeenCoder : Java Programming (ISBN 978-0-9887070-2-3) and the AP * Computer Science A Exam Requirements (Alignment to Tennessee AP CS A course code 3635) Updated March, 2015 Contains the new 2014-2015+
More informationProgramming II (CS300)
1 Programming II (CS300) Chapter 03: Creating Classes MOUNA KACEM mouna@cs.wisc.edu Spring 2019 Creating Classes 2 Constructors and Object Initialization Static versus non-static fields/methods Encapsulation
More informationObjects as a programming concept
Objects as a programming concept IB Computer Science Content developed by Dartford Grammar School Computer Science Department HL Topics 1-7, D1-4 1: System design 2: Computer Organisation 3: Networks 4:
More information9 Working with the Java Class Library
9 Working with the Java Class Library 1 Objectives At the end of the lesson, the student should be able to: Explain object-oriented programming and some of its concepts Differentiate between classes and
More informationObject Oriented Programming: In this course we began an introduction to programming from an object-oriented approach.
CMSC 131: Chapter 28 Final Review: What you learned this semester The Big Picture Object Oriented Programming: In this course we began an introduction to programming from an object-oriented approach. Java
More informationProgramming II (CS300)
1 Programming II (CS300) Chapter 03: Creating Classes MOUNA KACEM mouna@cs.wisc.edu Spring 2018 Creating Classes 2 Constructors and Object Initialization Static versus non-static fields/methods Encapsulation
More information(Not Quite) Minijava
(Not Quite) Minijava CMCS22620, Spring 2004 April 5, 2004 1 Syntax program mainclass classdecl mainclass class identifier { public static void main ( String [] identifier ) block } classdecl class identifier
More informationDefining Classes and Methods
Defining Classes and Methods Chapter 5 Information Hiding, Encapsulation: Outline Information Hiding Pre- and Postcondition Comments The public and private Modifiers Methods Calling Methods Encapsulation
More informationAdministration. Classes. Objects Part II. Agenda. Review: Object References. Object Aliases. CS 99 Summer 2000 Michael Clarkson Lecture 7
Administration Classes CS 99 Summer 2000 Michael Clarkson Lecture 7 Lab 7 due tomorrow Question: Lab 6.equals( SquareRoot )? Lab 8 posted today Prelim 2 in six days! Covers two weeks of material: lectures
More informationCS 335 Lecture 02 Java Programming
1 CS 335 Lecture 02 Java Programming Programming in Java Define data Calculate using data Output result Java is object-oriented: Java program must: Merge data and functions into object Invoke functions
More informationPASS4TEST IT 인증시험덤프전문사이트
PASS4TEST IT 인증시험덤프전문사이트 http://www.pass4test.net 일년동안무료업데이트 Exam : 1z0-809 Title : Java SE 8 Programmer II Vendor : Oracle Version : DEMO Get Latest & Valid 1z0-809 Exam's Question and Answers 1 from
More informationAggregation. Introduction to Computer Science I. Overview (1): Overview (2): CSE 1020 Summer Bill Kapralos. Bill Kapralos.
Aggregation Thursday, July 6 2006 CSE 1020, Summer 2006, Overview (1): Before We Begin Some administrative details Some questions to consider Aggregation Overview / Introduction The aggregate s constructor
More informationLab5. Wooseok Kim
Lab5 Wooseok Kim wkim3@albany.edu www.cs.albany.edu/~wooseok/201 Question Answer Points 1 A 8 2 A 8 3 E 8 4 D 8 5 20 5 for class 10 for main 5 points for output 6 A 8 7 B 8 8 0 15 9 D 8 10 B 8 Question
More informationOverview CSE 142. Naming Revisited Declarations. Defining Parts of Objects
ÿþýûú Overview CSE 142 Anatomy of an object: constructors, methods, and instance variables Quick Review Creating, naming, and using objects Creating (empty) classes and instances of them Today Details
More informationAnnouncements. PS 3 is due Thursday, 10/6. Midterm Exam 1: 10/14 (Fri), 9:00am-10:53am
Announcements PS 3 is due Thursday, 10/6 Midterm Exam 1: 10/14 (Fri), 9:00am-10:53am Room TBD Scope: Lecture 1 to Lecture 9 (Chapters 1 to 6 of text) You may bring a sheet of paper (A4, both sides) Tutoring
More informationCSC 1051 Algorithms and Data Structures I. Midterm Examination February 24, Name: KEY 1
CSC 1051 Algorithms and Data Structures I Midterm Examination February 24, 2014 Name: KEY 1 Question Value Score 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 10 10 10 TOTAL 100 Please answer questions in
More informationObject-Oriented Programming in Java
Software and Programming I Object-Oriented Programming in Java Roman Kontchakov / Carsten Fuhs Birkbeck, University of London Outline Object-Oriented Programming Public Interface of a Class Instance Variables
More informationLecture 5: Methods CS2301
Lecture 5: Methods NADA ALZAHRANI CS2301 1 Opening Problem Find the sum of integers from 1 to 10, from 20 to 30, and from 35 to 45, respectively. 2 Solution public static int sum(int i1, int i2) { int
More informationComputer Science II (20073) Week 1: Review and Inheritance
Computer Science II 4003-232-01 (20073) Week 1: Review and Inheritance Richard Zanibbi Rochester Institute of Technology Review of CS-I Hardware and Software Hardware Physical devices in a computer system
More information1B1b Classes in Java Part I
1B1b Classes in Java Part I Agenda Defining simple classes. Instance variables and methods. Objects. Object references. 1 2 Reading You should be reading: Part I chapters 6,9,10 And browsing: Part IV chapter
More informationCS 1316 Exam 1 Summer 2009
1 / 8 Your Name: I commit to uphold the ideals of honor and integrity by refusing to betray the trust bestowed upon me as a member of the Georgia Tech community. CS 1316 Exam 1 Summer 2009 Section/Problem
More informationCourse Outline. Introduction to java
Course Outline 1. Introduction to OO programming 2. Language Basics Syntax and Semantics 3. Algorithms, stepwise refinements. 4. Quiz/Assignment ( 5. Repetitions (for loops) 6. Writing simple classes 7.
More informationCOMP 202. More on OO. CONTENTS: static revisited this reference class dependencies method parameters variable scope method overloading
COMP 202 CONTENTS: static revisited this reference class dependencies method parameters variable scope method overloading More on OO COMP 202 - Week 7 1 Static member variables So far: Member variables
More informationI pledge by honor that I will not discuss this exam with anyone until my instructor reviews the exam in the class.
Name: Covers Chapters 1-3 50 mins CSCI 1301 Introduction to Programming Armstrong Atlantic State University Instructor: Dr. Y. Daniel Liang I pledge by honor that I will not discuss this exam with anyone
More informationProgramming: You will have 6 files all need to be located in the dir. named PA4:
PROGRAMMING ASSIGNMENT 4: Read Savitch: Chapter 7 and class notes Programming: You will have 6 files all need to be located in the dir. named PA4: PA4.java ShapeP4.java PointP4.java CircleP4.java RectangleP4.java
More informationCS 177 Recitation. Week 8 Methods
CS 177 Recitation Week 8 Methods Questions? Announcements Project 3 milestone due next Thursday 10/22 9pm Turn in with: turnin c cs177=xxxx p project3m Project3.java Make sure you turn in to project3m
More informationITP 342 Mobile App Dev. Fundamentals
ITP 342 Mobile App Dev Fundamentals Object-oriented Programming Object-oriented programming (OOP) is a programming paradigm based on the concept of objects. Classes A class can have attributes & actions
More informationTUGCE KEMEROZ - ASLI OZKAN - AYSE TARTAN. Week 12/02/ /02/2007 Lecture Notes:
1 INSTRUCTOR: FAZLI CAN TUGCE KEMEROZ - ASLI OZKAN - AYSE TARTAN Week 12/02/2007-16/02/2007 Lecture Notes: When we write a program we must design our programs to take correct output. For correct output,
More informationChapter 7. Inheritance
Chapter 7 Inheritance Introduction to Inheritance Inheritance is one of the main techniques of objectoriented programming (OOP) Using this technique, a very general form of a class is first defined and
More information(A) 99 ** (B) 100 (C) 101 (D) 100 initial integers plus any additional integers required during program execution
Ch 5 Arrays Multiple Choice Test 01. An array is a ** (A) data structure with one, or more, elements of the same type. (B) data structure with LIFO access. (C) data structure, which allows transfer between
More informationConstants. Why Use Constants? main Method Arguments. CS256 Computer Science I Kevin Sahr, PhD. Lecture 25: Miscellaneous
CS256 Computer Science I Kevin Sahr, PhD Lecture 25: Miscellaneous 1 main Method Arguments recall the method header of the main method note the argument list public static void main (String [] args) we
More informationCS111: PROGRAMMING LANGUAGE II
1 CS111: PROGRAMMING LANGUAGE II Computer Science Department Lecture 1: Introduction Lecture Contents 2 Course info Why programming?? Why Java?? Write once, run anywhere!! Java basics Input/output Variables
More informationCSCI 2010 Principles of Computer Science. Data and Expressions 08/09/2013 CSCI
CSCI 2010 Principles of Computer Science Data and Expressions 08/09/2013 CSCI 2010 1 Data Types, Variables and Expressions in Java We look at the primitive data types, strings and expressions that are
More informationTable of Contents Date(s) Title/Topic Page #s. Chapter 4: Writing Classes 4.1 Objects Revisited
Table of Contents Date(s) Title/Topic Page #s 11/6 Chapter 3 Reflection/Corrections 56 Chapter 4: Writing Classes 4.1 Objects Revisited 57 58-59 look over your Ch 3 Tests and write down comments/ reflections/corrections
More informationMotivation was to facilitate development of systems software, especially OS development.
A History Lesson C Basics 1 Development of language by Dennis Ritchie at Bell Labs culminated in the C language in 1972. Motivation was to facilitate development of systems software, especially OS development.
More information