Sun Educational Services Java Programming Language SL-275 Sun Educational Services Java Programming Language September 1999 Copyright 1999 Sun Microsystems‚ Inc.‚ 901 San Antonio Road‚ Palo Alto‚ California 94303‚ U.S.A. All rights reserved. This product or document is protected by copyright and distributed under licenses restricting its use‚ copying‚ distribution‚ and decompilation. No part of this product or document may be reproduced in any form by any means without prior written
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1: Introduction to Computers and Java Starting Out with Java: From Control Structures through Data Structures Second Edition by Tony Gaddis and Godfrey Muganda Chapter Topics Chapter 1 discusses the following main topics: – Introduction – Why Program? – Computer Systems: Hardware and Software – Programming Languages – What Is a Program Made Of? – The Programming Process – Object-Oriented Programming © 2012 Pearson Education‚ Inc. All rights reserved. 1-2 Java History • 1991 - Green Team started
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Java: Difference between classes and objects Name: Course: Tutor: Date: Java is an object oriented language. This means like unlike other languages such as FOTRAN‚ Object oriented languages organize the data and the commands come later. In this case java organizes data by use of classes and objects. (Cadenhead & Lemay‚ 2007) In other words java programs conceptualize a group of objects that work together. Therefore the use of classes in java comes about as it is the template used to
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Java Web development interview questions 1. Can we use the constructor‚ instead of init()‚ to initialize servlet? - Yes ‚ of course you can use the constructor instead of init(). There’s nothing to stop you. But you shouldn’t. The original reason for init() was that ancient versions of Java couldn’t dynamically invoke constructors with arguments‚ so there was no way to give the constructur a ServletConfig. That no longer applies‚ but servlet containers still will only call your no-arg constructor
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Java Virtual Machine‚ An inside story!! Java Virtual Machine‚ or JVM as its name suggest is a “virtual” computer that resides in the “real” computer as a software process. JVM gives Java the flexibility of platform independence. Let us see first how exactly Java program is created‚ compiled and executed. Java code is written in .java file. This code contains one or more Java language attributes like Classes‚ Methods‚ Variable‚ Objects etc. Javac is used to compile this code and to generate .class
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Java Standard Edition (Java SE)(J2SE): Java Development Kit: Java Runtime Environment: Java SE API Java Virtual Machines (JVM) Deployment Technologies Utilities needed to compile‚ test‚ and debug applications Operating Systems * Java Micro Edition (Java ME)(J2ME): Configurations: Connected Device Configuration (CDC) Standard Java Virtual Machine Used on devices without extreme constraints of resources Connected Limited Device Configuration (CLDC) Small compact Java Virtual Machine
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Table of Contents Core Java Volume II-Advanced Features‚ Eighth Edition - Graphically Rich Book ....................... 1 Table of Contents ................................................................................................................................................................................. 2 Copyright .........................................................................................................................................................................
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JavaScript Objects Everything is an Object • In JavaScript almost everything is an object. Even primitype datatypes (exept null and undefined) can be treated as objects. • Booleans can be objects or primitive data treated as objects • Numbers can be objects or primitive data treated as objects • Strings are also objects or primitive data treated as objects • Dates are always objects • Maths and Regular Expressions are always objects • Arrays are always objects • Even functions are always
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Gaddis – Starting Out With Java 5 – From Control Structures to Objects Chapter 06 – A First Look At Classes Multiple Choice 1. One or more objects may be created from a(n)_____. a. field b. class c. method d. instance ANS: B 2. Class objects normally have _____ that perform useful operations on their data‚ but primitive variables do not. a. fields b. instances c. methods d. relationships ANS: C 3. In the cookie cutter method: Think of the _____ as a cookie cutter and _____
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Architectural Strategies Java VS .Net Technology University of Phoenix Online Software Architecture July 16‚ 2012 CDCo needs to improve its architecture strategy in order to make the current application architecture more efficient and productive. Looking at the level 0 target state architecture of CDCo‚ improvement is necessary and choosing which types of technology to use needs to be thoroughly examine to see which is more beneficial to use or adapt
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