CSE 5324 - Software Engineering: Analysis, Design, and Testing
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The Performance Paradox of the JVM: Why More Hardware Means More
Expert Tip The Performance Paradox of the JVM: Why More Hardware Means More As computer hardware gets cheaper and faster, administrators managing Java based servers are frequently encountering serious problems when managing their runtime environments. JVM handles the task of garbage collection for the developer - cleaning up the space a developer has allocated for objects once an instance no longer has any references pointing to it. Some garbage collection is done quickly and invisibly. But certain sanitation tasks, which fortunately occur with minimal frequency, take significantly longer, causing the JVM to pause, and raising the ire of end users and administrators alike. Read this TheServerSide.com Expert Tip to better understand the JVM performance problem, how the JVM manages memory and how best to approach JVM Performance. Sponsored By: TheServerSide.com Expert Tip The Performance Paradox of the JVM: Why More Hardware Means More Expert Tip The Performance Paradox of the JVM: Why More Hardware Means More Table of Contents The Performance Paradox of the JVM: Why More Hardware Means More Failures Resources from Azul Systems Sponsored By: Page 2 of 8 TheServerSide.com Expert Tip The Performance Paradox of the JVM: Why More Hardware Means More The Performance Paradox of the JVM: Why More Hardware Means More Failures By Cameron McKenzie The Problem of the Unpredictable Pause As computer hardware gets cheaper and faster, administrators managing Java based servers are frequently encountering serious problems when managing their runtime environments. While our servers are getting decked out with faster and faster hardware, the Java Virtual Machines (JVMs) that are running on them can't effectively leverage the extra hardware without hitting a wall and temporarily freezing. -
Java (Programming Langua a (Programming Language)
Java (programming language) From Wikipedia, the free encyclopedialopedia "Java language" redirects here. For the natural language from the Indonesian island of Java, see Javanese language. Not to be confused with JavaScript. Java multi-paradigm: object-oriented, structured, imperative, Paradigm(s) functional, generic, reflective, concurrent James Gosling and Designed by Sun Microsystems Developer Oracle Corporation Appeared in 1995[1] Java Standard Edition 8 Update Stable release 5 (1.8.0_5) / April 15, 2014; 2 months ago Static, strong, safe, nominative, Typing discipline manifest Major OpenJDK, many others implementations Dialects Generic Java, Pizza Ada 83, C++, C#,[2] Eiffel,[3] Generic Java, Mesa,[4] Modula- Influenced by 3,[5] Oberon,[6] Objective-C,[7] UCSD Pascal,[8][9] Smalltalk Ada 2005, BeanShell, C#, Clojure, D, ECMAScript, Influenced Groovy, J#, JavaScript, Kotlin, PHP, Python, Scala, Seed7, Vala Implementation C and C++ language OS Cross-platform (multi-platform) GNU General Public License, License Java CommuniCommunity Process Filename .java , .class, .jar extension(s) Website For Java Developers Java Programming at Wikibooks Java is a computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few impimplementation dependencies as possible.ble. It is intended to let application developers "write once, run ananywhere" (WORA), meaning that code that runs on one platform does not need to be recompiled to rurun on another. Java applications ns are typically compiled to bytecode (class file) that can run on anany Java virtual machine (JVM)) regardless of computer architecture. Java is, as of 2014, one of tthe most popular programming ng languages in use, particularly for client-server web applications, witwith a reported 9 million developers.[10][11] Java was originallyy developed by James Gosling at Sun Microsystems (which has since merged into Oracle Corporation) and released in 1995 as a core component of Sun Microsystems'Micros Java platform. -
JCP at Javapolis 2007
Javapolis News ❙ 14 December 2007 ❙ Nr 5 ❙ Published by Minoc Business Press 54 www.nonillion.com Parleys Want to become a NONILLIONAIRE ? mail us at : [email protected] Building Rich Internet Applications with Flex and JavaFX “There’s a well thought out com- an online environment using Adobe AIR. “Even when you ponent model for Flex”, he said. are offl ine, you still can update data. When the connec- “And there’s a thriving market tion comes back on, the system synchronizes automati- for components out there, both cally.” Open Source and commercial. So there are literally hundreds JavaPolis founder Stephan Janssen was next to explain of components available to how he decided to have Parleys.com rewritten using Flex. use in Flex.” And no, Flex isn’t Parleys.com offers a massive amount of Java talks – from there for fun and games only. JavaPolis, JavaOne and other Java events from all over “There are already a great the world – combining video images with the actual pres- number of business applica- entation slides of the speakers. Janssen programmed the tions running today, all built application for fun at fi rst, but with over 10 TB of streamed with Flex.” Eckel backed up video in just under a year, it’s clear Parleys.com sort of his statement with an ex- started to lead its own life. “The decision to write a new ample of an interface for an version was made six months ago”, he said. “It was still intranet sales application. too early to use JavaFX. And Silverlight? No thanks.” “Some people think Flex Flex allowed him to leverage the Java code of the earlier isn’t the right choice to version of Parleys.com and to resolve the Web 2.0 and make for business applica- AJAX issues he had en- countered while programming tions, because the render- the fi rst version. -
The Java® Language Specification Java SE 8 Edition
The Java® Language Specification Java SE 8 Edition James Gosling Bill Joy Guy Steele Gilad Bracha Alex Buckley 2015-02-13 Specification: JSR-337 Java® SE 8 Release Contents ("Specification") Version: 8 Status: Maintenance Release Release: March 2015 Copyright © 1997, 2015, Oracle America, Inc. and/or its affiliates. 500 Oracle Parkway, Redwood City, California 94065, U.S.A. All rights reserved. Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their respective owners. The Specification provided herein is provided to you only under the Limited License Grant included herein as Appendix A. Please see Appendix A, Limited License Grant. To Maurizio, with deepest thanks. Table of Contents Preface to the Java SE 8 Edition xix 1 Introduction 1 1.1 Organization of the Specification 2 1.2 Example Programs 6 1.3 Notation 6 1.4 Relationship to Predefined Classes and Interfaces 7 1.5 Feedback 7 1.6 References 7 2 Grammars 9 2.1 Context-Free Grammars 9 2.2 The Lexical Grammar 9 2.3 The Syntactic Grammar 10 2.4 Grammar Notation 10 3 Lexical Structure 15 3.1 Unicode 15 3.2 Lexical Translations 16 3.3 Unicode Escapes 17 3.4 Line Terminators 19 3.5 Input Elements and Tokens 19 3.6 White Space 20 3.7 Comments 21 3.8 Identifiers 22 3.9 Keywords 24 3.10 Literals 24 3.10.1 Integer Literals 25 3.10.2 Floating-Point Literals 31 3.10.3 Boolean Literals 34 3.10.4 Character Literals 34 3.10.5 String Literals 35 3.10.6 Escape Sequences for Character and String Literals 37 3.10.7 The Null Literal 38 3.11 Separators -
IP Log for Eclipse.Platform Release 4.0, July 2010 Licenses
IP Log for eclipse.platform Release 4.0, July 2010 Licenses • Eclipse Public License v1.0 Third-Party Code CQ Third-Party Code License Use ICU4J (core and extended ICU4J License (X License, 1065 function) and ICU4J MIT Style) Replacement plug-in Version: 3.6 ICU4J License (X License, 1116 ICU4J Version: 3.4.5.20061213 MIT Style) 1153 JSch 0.1.31 Version: 0.1.31 New BSD license Apache Lucene Version: 1.9.1 243 (Core+Contrib Analyzers Apache License, 2.0 Analysis Src) 257 APT Version: 1 New BSD license Mozilla Public License 1.1 (MPL), MIT Style with No 262 Cairo Version: 1.0.2 Endorsement Clause, Historical Permissive Notice & Disclaimer ICU4J License (X License, 280 ICU4J Version: 3.4 MIT Style) ICU4J License (X License, 281 ICU4J Version: 3.4.3 MIT Style) 293 jsch Version: 0.1.28 New BSD license 308 PNG unload Version: 1 MIT license 1232 Apache Ant Version: 1.7.0 Apache License, 2.0 ICU4J and ICU4J Replacement ICU4J License (X License, 1367 Version: 3.6.1 MIT Style) Olsen time zone data Version: 1368 Public Domain 2007e Work derived from IJG JPEG 1596 IJG License Version: Release 6b,337 unmodified 1826 JSch 0.1.35 New BSD license source & binary ICU4J and ICU4J replacement MIT License with "no unmodified 1919 Version: 3.8.1 edorsement" clause source & binary unmodified 2014 jsch Version: 0.1.37 New BSD license source & binary XHTML DTDs Version: unmodified 2044 W3C Document License Versions 1.0 and 1.1 (PB CQ331) source org.apache.ant Version: 1.6.5 2404 (ATO CQ1013) (using Orbit Apache License, 2.0 CQ2209) org.apache.lucene Version: 1.4.3 2405 (Core Source Only) (ATO Apache License, 2.0 CQ1014) (using Orbit CQ2210) Junit Version: 3.8.2 (ATO 2406 Common Public License 1.0 CQ299) (using Orbit CQ2206) Historical support for Java SSH modified 2410 Applet + Blowfish Version - v. -
Bibliography of Concrete Abstractions: an Introduction To
Out of print; full text available for free at http://www.gustavus.edu/+max/concrete-abstractions.html Bibliography [1] Harold Abelson, Gerald J. Sussman, and friends. Computer Exercises to Accom- pany Structure and Interpretation of Computer Programs. New York: McGraw- Hill, 1988. [2] Harold Abelson and Gerald Jay Sussman. Structure and Interpretation of Com- puter Programs. Cambridge, MA: The MIT Press and New York: McGraw-Hill, 2nd edition, 1996. [3] Alfred V. Aho and Jeffrey D. Ullman. Foundations of Computer Science.New York: Computer Science Press, 1992. [4] Ronald E. Anderson, Deborah G. Johnson, Donald Gotterbarn, and Judith Perville. Using the new ACM code of ethics in decision making. Communica- tions of the ACM, 36(2):98±107, February 1993. [5] Ken Arnold and James Gosling. The Java Programming Language. Reading, MA: Addison-Wesley, 2nd edition, 1998. [6] Henk Barendregt. The impact of the lambda calculus in logic and computer science. The Bulletin of Symbolic Logic, 3(2):181±215, June 1997. [7] Grady Booch. Object-oriented Analysis and Design with Applications.Menlo Park, CA: Benjamin/Cummings, 2nd edition, 1994. [8] Charles L. Bouton. Nim, a game with a complete mathematical theory. The Annals of Mathematics, 3:35±39, 1901. Series 2. [9] Mary Campione and Kathy Walrath. The Java Tutorial: Object-Oriented Pro- gramming for the Internet. Reading, MA: Addison-Wesley, 2nd edition, 1998. Excerpted from Concrete Abstractions; copyright © 1999 by Max Hailperin, Barbara Kaiser, and Karl Knight 649 650 Bibliography [10] Canadian Broadcasting Company. Quirks and quarks. Radio program, Decem- ber 19, 1992. Included chocolate bar puzzle posed by Dr. -
Evil Pickles: Dos Attacks Based on Object-Graph Engineering∗
Evil Pickles: DoS Attacks Based on Object-Graph Engineering∗ Jens Dietrich1, Kamil Jezek2, Shawn Rasheed3, Amjed Tahir4, and Alex Potanin5 1 School of Engineering and Advanced Technology, Massey University Palmerston North, New Zealand [email protected] 2 NTIS – New Technologies for the Information Society Faculty of Applied Sciences, University of West Bohemia Pilsen, Czech Republic [email protected] 3 School of Engineering and Advanced Technology, Massey University Palmerston North, New Zealand [email protected] 4 School of Engineering and Advanced Technology, Massey University Palmerston North, New Zealand [email protected] 5 School of Engineering and Computer Science Victoria University of Wellington, Wellington, New Zealand [email protected] Abstract In recent years, multiple vulnerabilities exploiting the serialisation APIs of various programming languages, including Java, have been discovered. These vulnerabilities can be used to devise in- jection attacks, exploiting the presence of dynamic programming language features like reflection or dynamic proxies. In this paper, we investigate a new type of serialisation-related vulnerabilit- ies for Java that exploit the topology of object graphs constructed from classes of the standard library in a way that deserialisation leads to resource exhaustion, facilitating denial of service attacks. We analyse three such vulnerabilities that can be exploited to exhaust stack memory, heap memory and CPU time. We discuss the language and library design features that enable these vulnerabilities, and investigate whether these vulnerabilities can be ported to C#, Java- Script and Ruby. We present two case studies that demonstrate how the vulnerabilities can be used in attacks on two widely used servers, Jenkins deployed on Tomcat and JBoss. -
Methoden Der Metaprogrammierung Zur Rekonfiguration Von Software
Lehrstuhl für Realzeit-Computersysteme Methoden der Metaprogrammierung zur Rekonfiguration von Software eingebetteter Systeme Thomas Maier-Komor Vollständiger Abdruck der von der Fakultät für Elektrotechnik und Informationstech- nik der Technischen Universität München zur Erlangung des akademischen Grades eines Doktor-Ingenieurs (Dr.-Ing.) genehmigten Dissertation. Vorsitzender: Univ.-Prof. Dr. sc. techn. (ETH) A. Herkersdorf Prüfer der Dissertation: 1. Univ.-Prof. Dr.-Ing. G. Färber 2. Univ.-Prof. Dr. rer. nat. Dr. rer. nat. habil. U. Baumgarten Die Dissertation wurde am 27.6.2006, bei der Technischen Universität München ein- gereicht und durch die Fakultät für Elektrotechnik und Informationstechnik am 8.12.2006 angenommen. ii Abstract Der Entwurf von Software für eingebettete Systeme wird sowohl durch die Systemum- gebung als auch durch das System selbst stark beeinflusst. Beide Faktoren reduzieren die Wiederverwendbarkeit und die Erweiterbarkeit der Software in erheblichem Maße. Insbesondere können wirtschaftliche Überlegungen mitunter hohe Anforderungen an das Design stellen. Eine Lösung dieser Problematik kann nur mit klar definierten Abstrakti- onsebenen und geeigneten Schnittstellen zur Integration ermöglicht werden. Mit MetaC wird in dieser Arbeit eine Spracherweiterung vorgestellt, die neue Konzepte bietet, um die speziellen Anforderungen querschneidender Strukturen von eingebetteter Software anzusprechen. Insbesondere werden Methoden zur Verbesserung der Wiederver- wendbarkeit, Erweiterbarkeit und Abstraktion von Software für eingebettete -
Design Patterns I Observer, Listener & MVC Design Patterns I - Gliederung
Design Patterns I Observer, Listener & MVC Design Patterns I - Gliederung - Was sind Design Patterns? - Definition von Design Patterns - Entstehung - Nutzen & Verwendung - MVC - Model, View, Controller - Observer & Listener - JavaFX ActionEvent - Was sind Events? - Event Dispatch Chain - Event Type Hierarchy - MouseListener - KeyListener - Codebeispiel zu Key- & Mouselistener Was sind Design Patterns? Was sind Design Patterns? - Definition Entwurfsmuster (englisch design patterns) sind bewährte Lösungsschablonen für wiederkehrende Entwurfsprobleme [...]. Sie stellen damit eine wiederverwendbare Vorlage zur Problemlösung dar, die in einem bestimmten Zusammenhang einsetzbar ist. (Quelle: Wikipedia, Entwurfsmuster) Was sind Design Patterns? - Entstehung ● Sammlung von Entwurfsmustern von Architekt Christopher Alexander zwischen 1977 und 1979 ● Verwendung in der Software für die Erstellung grafischer Benutzeroberflächen mit Smalltalk von Kent Beck und Ward Cunningham 1987 ● Verbreitung durch Promotion Erich Gammas und schließlich Publikation des Buches Design Patterns – Elements of Reusable Object-Oriented Software zusammen mit Richard Helm, Ralph Johnson, John Vlissides (Gang of Four) 1994 Was sind Design Patterns? - Nutzen & Verwendung ● Vier Elemente eines Design Patterns: 1. Pattern Name 2. Problem 3. Solution 4. Consequences ● Drei Arten von Design Patterns: ○ Creational Patterns (Erzeugungsmuster) ○ Structural Patterns (Strukturmuster) ○ Behavioral Patterns (Verhaltensmuster) MVC - Model View Controller MVC - Definition Model View Controller -
Testing Java with Jython and Pyunit
Testing Java with Jython and PyUnit André Burgaud 2007-11-25 JUnit, the unit test framework written by Erich Gamma and Kent Beck, is not the only alternative for unit testing in the Java environment. This article provides a simple demonstration on how to use Jython, PyUnit and Ant to unit test a Java project. This article assumes that the reader has some basic knowledge of unit testing, Java, Jython or Python and possibly Apache Ant. For more information about each of those technologies, see section Resources at the end of this article. JyUnit, the companion code for this article, is a rewrite of the unit test example provided with JUnit, MoneyTest. It also includes an Ant file, build.xml, to facilitate the integration and automation of Jython and the unit test process. Requirements - Installation To try JyUnit, you need: • Java 2 SDK, Standard Edition: 1. Download and install the Java Development Kit (JDK), Version 1.4.2 or greater 2. Create an environment variable JAVA_HOME, pointing to the installation path of the JDK. This simplifies the installation of Apache Ant • Apache Ant: 1. Apache Ant is only needed to execute the tests from Ant and to demonstrate the possibilities of Jython integration with Ant. Without Ant, you can perform the tests using scripts .bat for Windows or .sh for UNIX/Linux. 2. Download and install [Apache Ant]((https://ant.apache.org/) 3. Add the directory bin of the ant directory installation to your PATH (For instance: C:\ant\bin, if Ant is installed in C:\ant on Windows) • Jython: 1. -
Comparative Studies of 10 Programming Languages Within 10 Diverse Criteria Revision 1.0
Comparative Studies of 10 Programming Languages within 10 Diverse Criteria Revision 1.0 Rana Naim∗ Mohammad Fahim Nizam† Concordia University Montreal, Concordia University Montreal, Quebec, Canada Quebec, Canada [email protected] [email protected] Sheetal Hanamasagar‡ Jalal Noureddine§ Concordia University Montreal, Concordia University Montreal, Quebec, Canada Quebec, Canada [email protected] [email protected] Marinela Miladinova¶ Concordia University Montreal, Quebec, Canada [email protected] Abstract This is a survey on the programming languages: C++, JavaScript, AspectJ, C#, Haskell, Java, PHP, Scala, Scheme, and BPEL. Our survey work involves a comparative study of these ten programming languages with respect to the following criteria: secure programming practices, web application development, web service composition, OOP-based abstractions, reflection, aspect orientation, functional programming, declarative programming, batch scripting, and UI prototyping. We study these languages in the context of the above mentioned criteria and the level of support they provide for each one of them. Keywords: programming languages, programming paradigms, language features, language design and implementation 1 Introduction Choosing the best language that would satisfy all requirements for the given problem domain can be a difficult task. Some languages are better suited for specific applications than others. In order to select the proper one for the specific problem domain, one has to know what features it provides to support the requirements. Different languages support different paradigms, provide different abstractions, and have different levels of expressive power. Some are better suited to express algorithms and others are targeting the non-technical users. The question is then what is the best tool for a particular problem. -
Java (Software Platform) from Wikipedia, the Free Encyclopedia Not to Be Confused with Javascript
Java (software platform) From Wikipedia, the free encyclopedia Not to be confused with JavaScript. This article may require copy editing for grammar, style, cohesion, tone , or spelling. You can assist by editing it. (February 2016) Java (software platform) Dukesource125.gif The Java technology logo Original author(s) James Gosling, Sun Microsystems Developer(s) Oracle Corporation Initial release 23 January 1996; 20 years ago[1][2] Stable release 8 Update 73 (1.8.0_73) (February 5, 2016; 34 days ago) [±][3] Preview release 9 Build b90 (November 2, 2015; 4 months ago) [±][4] Written in Java, C++[5] Operating system Windows, Solaris, Linux, OS X[6] Platform Cross-platform Available in 30+ languages List of languages [show] Type Software platform License Freeware, mostly open-source,[8] with a few proprietary[9] compo nents[10] Website www.java.com Java is a set of computer software and specifications developed by Sun Microsyst ems, later acquired by Oracle Corporation, that provides a system for developing application software and deploying it in a cross-platform computing environment . Java is used in a wide variety of computing platforms from embedded devices an d mobile phones to enterprise servers and supercomputers. While less common, Jav a applets run in secure, sandboxed environments to provide many features of nati ve applications and can be embedded in HTML pages. Writing in the Java programming language is the primary way to produce code that will be deployed as byte code in a Java Virtual Machine (JVM); byte code compil ers are also available for other languages, including Ada, JavaScript, Python, a nd Ruby.