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Issue October 2019 | presented by www.jaxenter.com #70 The digital magazine for enterprise developers JavaThe JDK’s hidden 13 treasures i Jakarta EE 8 Let the games begin JDK 13 Why text blocks are worth the wait OpenJFX 13 JavaFX gets its own identity © Teguh Mujiono/Shutterstock.com, Pushkin/Shutterstock.com Illustrationen: Sun Microsystems Inc., S&S Media Editorial Let’s celebrate Java – three times! It’s that time again: A new Java version is here! Java 13 Last but not least: Jakarta EE, the follow-up project of was launched as planned, six months after the release Java EE, has announced its first release under the umbrella of of Java 12, and again it has some interesting features on the Eclipse Foundation. We got hold of the executive director board. In this issue of Jax Magazine, we’ve covered them of the Eclipse Foundation, Mike Milinkovich, and asked him for you in detail. about the current status of Jakarta EE. The good news doesn’t end there, as JavaFX 13 has also been released. The UI toolkit is no longer included in the JDK Happy reading, but has adjusted its new version releases to the new Java re- lease cadence. Find out what’s new here! Hartmut Schlosser Java 13 – a deep dive into the JDK’s 3 Kubernetes as a multi-cloud 17 new features operating system Falk Sippach Patrick Arnold Index Java 13 – why text blocks are worth the wait 6 Multi-tier deployment with Ansible 21 Tim Zöller Daniel Stender Jakarta EE 8 is sprinting towards an 9 Do we need a service mesh? 28 exciting future for enterprise Java Anton Weiss Thilo Frotscher -
Ece351 Lab Manual
DEREK RAYSIDE & ECE351 STAFF ECE351 LAB MANUAL UNIVERSITYOFWATERLOO 2 derek rayside & ece351 staff Copyright © 2014 Derek Rayside & ECE351 Staff Compiled March 6, 2014 acknowledgements: • Prof Paul Ward suggested that we look into something with vhdl to have synergy with ece327. • Prof Mark Aagaard, as the ece327 instructor, consulted throughout the development of this material. • Prof Patrick Lam generously shared his material from the last offering of ece251. • Zhengfang (Alex) Duanmu & Lingyun (Luke) Li [1b Elec] wrote solutions to most labs in txl. • Jiantong (David) Gao & Rui (Ray) Kong [3b Comp] wrote solutions to the vhdl labs in antlr. • Aman Muthrej and Atulan Zaman [3a Comp] wrote solutions to the vhdl labs in Parboiled. • TA’s Jon Eyolfson, Vajih Montaghami, Alireza Mortezaei, Wenzhu Man, and Mohammed Hassan. • TA Wallace Wu developed the vhdl labs. • High school students Brian Engio and Tianyu Guo drew a number of diagrams for this manual, wrote Javadoc comments for the code, and provided helpful comments on the manual. Licensed under Creative Commons Attribution-ShareAlike (CC BY-SA) version 2.5 or greater. http://creativecommons.org/licenses/by-sa/2.5/ca/ http://creativecommons.org/licenses/by-sa/3.0/ Contents 0 Overview 9 Compiler Concepts: call stack, heap 0.1 How the Labs Fit Together . 9 Programming Concepts: version control, push, pull, merge, SSH keys, IDE, 0.2 Learning Progressions . 11 debugger, objects, pointers 0.3 How this project compares to CS241, the text book, etc. 13 0.4 Student work load . 14 0.5 How this course compares to MIT 6.035 .......... 15 0.6 Where do I learn more? . -
Chapter 5: Bonforum Chat Application: Use and Design 5.1
Chapter 5: bonForum Chat Application: Use and Design - XML, XSLT, Java, and JSP Page 1 of 22 Chapter 5: bonForum Chat Application: Use and Design This chapter introduces you to bonForum, the Web chat application that will be the major subject of the rest of the book. bonForum was designed as a tool to explore each of the subjects of this book, XML, XSLT, Java servlets, Java applets, and JavaServer Pages, while solving some real Web application problems. 5.1 Installing and Running bonForum You can understand the remainder of this book much more easily if you have installed and tried out the Web chat application that it features. Therefore, we begin this chapter with instructions for installing and running bonForum. 5.1.1 A Preview of the Rest of the Book After helping you install and try bonForum, this chapter gives you some hints about how you can customize bonForum and develop it further yourself. After that, we discuss the design process. This chapter ends with some additional material about using XML data in Web applications. The next chapter continues this overview of the entire bonForum project and begins by describing the implementation that our design led us to develop. That chapter ends with highlights of some of the major problems that we encountered, together with solutions found and solutions planned. In Chapters 7–11, we cover in detail the code that we developed as we created this prototype for a multiuser, server-based Web application. Each of those chapters focuses on a different software technology that we applied to create the bonForum Web chat and uses excerpts from the source code to illustrate the discussion. -
Implementation of Processing in Racket 1 Introduction
P2R Implementation of Processing in Racket Hugo Correia [email protected] Instituto Superior T´ecnico University of Lisbon Abstract. Programming languages are being introduced in several ar- eas of expertise, including design and architecture. Processing is an ex- ample of one of these languages that was created to teach architects and designers how to program. In spite of offering a wide set of features, Pro- cessing does not support the use of traditional computer-aided design applications, which are heavily used in the architecture industry. Rosetta is a generative design tool based on the Racket language that attempts to solve this problem. Rosetta provides a novel approach to de- sign creation, offering a set of programming languages that generate de- signs in different computer-aided design applications. However, Rosetta does not support Processing. Therefore, the goal is to add Processing to Rosetta's language set, offering architects that know Processing, an alternative solution that supports computer-aided design applications. In order to achieve this goal, a source-to-source compiler that translates Processing into Racket will be developed. This will also give the Racket community the ability to use Processing in the Racket environment, and, at the same time, will allow the Processing community to take advantage of Racket's libraries and development environment. In this report, an analysis of different language implementation mecha- nisms will be presented, focusing on the different steps of the compilation phase, as well as higher-level solutions, including Language Workbenches. In order to gain insight of source-to-source compiler creation, relevant existing source-to-source compilers are presented. -
Tracking Known Security Vulnerabilities in Third-Party Components
Tracking known security vulnerabilities in third-party components Master’s Thesis Mircea Cadariu Tracking known security vulnerabilities in third-party components THESIS submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE in COMPUTER SCIENCE by Mircea Cadariu born in Brasov, Romania Software Engineering Research Group Software Improvement Group Department of Software Technology Rembrandt Tower, 15th floor Faculty EEMCS, Delft University of Technology Amstelplein 1 - 1096HA Delft, the Netherlands Amsterdam, the Netherlands www.ewi.tudelft.nl www.sig.eu c 2014 Mircea Cadariu. All rights reserved. Tracking known security vulnerabilities in third-party components Author: Mircea Cadariu Student id: 4252373 Email: [email protected] Abstract Known security vulnerabilities are introduced in software systems as a result of de- pending on third-party components. These documented software weaknesses are hiding in plain sight and represent the lowest hanging fruit for attackers. Despite the risk they introduce for software systems, it has been shown that developers consistently download vulnerable components from public repositories. We show that these downloads indeed find their way in many industrial and open-source software systems. In order to improve the status quo, we introduce the Vulnerability Alert Service, a tool-based process to track known vulnerabilities in software projects throughout the development process. Its usefulness has been empirically validated in the context of the external software product quality monitoring service offered by the Software Improvement Group, a software consultancy company based in Amsterdam, the Netherlands. Thesis Committee: Chair: Prof. Dr. A. van Deursen, Faculty EEMCS, TU Delft University supervisor: Prof. Dr. A. -
Unravel Data Systems Version 4.5
UNRAVEL DATA SYSTEMS VERSION 4.5 Component name Component version name License names jQuery 1.8.2 MIT License Apache Tomcat 5.5.23 Apache License 2.0 Tachyon Project POM 0.8.2 Apache License 2.0 Apache Directory LDAP API Model 1.0.0-M20 Apache License 2.0 apache/incubator-heron 0.16.5.1 Apache License 2.0 Maven Plugin API 3.0.4 Apache License 2.0 ApacheDS Authentication Interceptor 2.0.0-M15 Apache License 2.0 Apache Directory LDAP API Extras ACI 1.0.0-M20 Apache License 2.0 Apache HttpComponents Core 4.3.3 Apache License 2.0 Spark Project Tags 2.0.0-preview Apache License 2.0 Curator Testing 3.3.0 Apache License 2.0 Apache HttpComponents Core 4.4.5 Apache License 2.0 Apache Commons Daemon 1.0.15 Apache License 2.0 classworlds 2.4 Apache License 2.0 abego TreeLayout Core 1.0.1 BSD 3-clause "New" or "Revised" License jackson-core 2.8.6 Apache License 2.0 Lucene Join 6.6.1 Apache License 2.0 Apache Commons CLI 1.3-cloudera-pre-r1439998 Apache License 2.0 hive-apache 0.5 Apache License 2.0 scala-parser-combinators 1.0.4 BSD 3-clause "New" or "Revised" License com.springsource.javax.xml.bind 2.1.7 Common Development and Distribution License 1.0 SnakeYAML 1.15 Apache License 2.0 JUnit 4.12 Common Public License 1.0 ApacheDS Protocol Kerberos 2.0.0-M12 Apache License 2.0 Apache Groovy 2.4.6 Apache License 2.0 JGraphT - Core 1.2.0 (GNU Lesser General Public License v2.1 or later AND Eclipse Public License 1.0) chill-java 0.5.0 Apache License 2.0 Apache Commons Logging 1.2 Apache License 2.0 OpenCensus 0.12.3 Apache License 2.0 ApacheDS Protocol -
Adaptive LL(*) Parsing: the Power of Dynamic Analysis
Adaptive LL(*) Parsing: The Power of Dynamic Analysis Terence Parr Sam Harwell Kathleen Fisher University of San Francisco University of Texas at Austin Tufts University [email protected] [email protected] kfi[email protected] Abstract PEGs are unambiguous by definition but have a quirk where Despite the advances made by modern parsing strategies such rule A ! a j ab (meaning “A matches either a or ab”) can never as PEG, LL(*), GLR, and GLL, parsing is not a solved prob- match ab since PEGs choose the first alternative that matches lem. Existing approaches suffer from a number of weaknesses, a prefix of the remaining input. Nested backtracking makes de- including difficulties supporting side-effecting embedded ac- bugging PEGs difficult. tions, slow and/or unpredictable performance, and counter- Second, side-effecting programmer-supplied actions (muta- intuitive matching strategies. This paper introduces the ALL(*) tors) like print statements should be avoided in any strategy that parsing strategy that combines the simplicity, efficiency, and continuously speculates (PEG) or supports multiple interpreta- predictability of conventional top-down LL(k) parsers with the tions of the input (GLL and GLR) because such actions may power of a GLR-like mechanism to make parsing decisions. never really take place [17]. (Though DParser [24] supports The critical innovation is to move grammar analysis to parse- “final” actions when the programmer is certain a reduction is time, which lets ALL(*) handle any non-left-recursive context- part of an unambiguous final parse.) Without side effects, ac- free grammar. ALL(*) is O(n4) in theory but consistently per- tions must buffer data for all interpretations in immutable data forms linearly on grammars used in practice, outperforming structures or provide undo actions. -
Java Version 40 Download Apache Tomcat ® Welcome to the Apache Tomcat ® 9.X Software Download Page
java version 40 download Apache Tomcat ® Welcome to the Apache Tomcat ® 9.x software download page. This page provides download links for obtaining the latest version of Tomcat 9.0.x software, as well as links to the archives of older releases. Unsure which version you need? Specification versions implemented, minimum Java version required and lots more useful information may be found on the 'which version?' page. Quick Navigation. Release Integrity. You must verify the integrity of the downloaded files. We provide OpenPGP signatures for every release file. This signature should be matched against the KEYS file which contains the OpenPGP keys of Tomcat's Release Managers. We also provide SHA-512 checksums for every release file. After you download the file, you should calculate a checksum for your download, and make sure it is the same as ours. Mirrors. You are currently using https://mirror.softaculous.com/apache/ . If you encounter a problem with this mirror, please select another mirror. If all mirrors are failing, there are backup mirrors (at the end of the mirrors list) that should be available. Please see the README file for packaging information. It explains what every distribution contains. Apache Tomcat ® The Apache Tomcat ® software is an open source implementation of the Jakarta Servlet, Jakarta Server Pages, Jakarta Expression Language, Jakarta WebSocket, Jakarta Annotations and Jakarta Authentication specifications. These specifications are part of the Jakarta EE platform. The Jakarta EE platform is the evolution of the Java EE platform. Tomcat 10 and later implement specifications developed as part of Jakarta EE. Tomcat 9 and earlier implement specifications developed as part of Java EE. -
Inequalities in Open Source Software Development: Analysis of Contributor’S Commits in Apache Software Foundation Projects
RESEARCH ARTICLE Inequalities in Open Source Software Development: Analysis of Contributor’s Commits in Apache Software Foundation Projects Tadeusz Chełkowski1☯, Peter Gloor2☯*, Dariusz Jemielniak3☯ 1 Kozminski University, Warsaw, Poland, 2 Massachusetts Institute of Technology, Center for Cognitive Intelligence, Cambridge, Massachusetts, United States of America, 3 Kozminski University, New Research on Digital Societies (NeRDS) group, Warsaw, Poland ☯ These authors contributed equally to this work. * [email protected] a11111 Abstract While researchers are becoming increasingly interested in studying OSS phenomenon, there is still a small number of studies analyzing larger samples of projects investigating the structure of activities among OSS developers. The significant amount of information that OPEN ACCESS has been gathered in the publicly available open-source software repositories and mailing- list archives offers an opportunity to analyze projects structures and participant involve- Citation: Chełkowski T, Gloor P, Jemielniak D (2016) Inequalities in Open Source Software Development: ment. In this article, using on commits data from 263 Apache projects repositories (nearly Analysis of Contributor’s Commits in Apache all), we show that although OSS development is often described as collaborative, but it in Software Foundation Projects. PLoS ONE 11(4): fact predominantly relies on radically solitary input and individual, non-collaborative contri- e0152976. doi:10.1371/journal.pone.0152976 butions. We also show, in the first published study of this magnitude, that the engagement Editor: Christophe Antoniewski, CNRS UMR7622 & of contributors is based on a power-law distribution. University Paris 6 Pierre-et-Marie-Curie, FRANCE Received: December 15, 2015 Accepted: March 22, 2016 Published: April 20, 2016 Copyright: © 2016 Chełkowski et al. -
Metro User Guide Metro User Guide Table of Contents
Metro User Guide Metro User Guide Table of Contents Preface .............................................................................................................................. x 1. Introduction to Metro ....................................................................................................... 1 1.1. Required Software ................................................................................................ 1 1.2. What is WSIT? .................................................................................................... 1 1.2.1. Bootstrapping and Configuration ................................................................... 2 1.2.2. Message Optimization Technology ................................................................ 3 1.2.3. Reliable Messaging Technology .................................................................... 4 1.2.4. Security Technology ................................................................................... 4 1.3. How Metro Relates to .NET Windows Communication Foundation (WCF) ...................... 5 1.4. Metro Specifications ............................................................................................. 5 1.4.1. Bootstrapping and Configuration Specifications ............................................... 7 1.4.2. Message Optimization Specifications ............................................................. 8 1.4.3. Reliable Messaging Specifications ............................................................... 10 1.4.4. Security Specifications -
Jakarta Concurrency 2.0 Specification Document
Jakarta Concurrency Jakarta Concurrency Team, https://projects.eclipse.org/projects/ee4j.cu 2.0, 2020-10-08T19:20:31Z Table of Contents Eclipse Foundation Specification License . 1 Disclaimers. 2 Jakarta Concurrency Specification, Version 2.0 . 3 1. Introduction. 4 1.1. Overview . 4 1.2. Goals of this specification. 4 1.3. Other Java Platform and Jakarta Specifications . 4 1.4. Concurrency Utilities for Java EE Expert Group at the JCP . 5 1.5. Document Conventions. 5 2. Overview . 6 2.1. Container-Managed vs. Unmanaged Threads . 6 2.2. Application Integrity . 6 2.3. Container Thread Context . 7 2.3.1. Contextual Invocation Points. 8 2.3.1.1. Optional Contextual Invocation Points . 8 2.3.2. Contextual Objects and Tasks . 8 2.3.2.1. Tasks and Jakarta Contexts and Dependency Injection (CDI) . 9 2.4. Usage with Jakarta Connectors . 9 2.5. Security . 10 3. Managed Objects . 11 3.1. ManagedExecutorService. 11 3.1.1. Application Component Provider’s Responsibilities . 11 3.1.1.1. Usage Example. 12 3.1.2. Application Assembler’s Responsibilities . 18 3.1.3. Deployer’s Responsibilities. 18 3.1.4. Jakarta EE Product Provider’s Responsibilities. 18 3.1.4.1. ManagedExecutorService Configuration Attributes. 19 3.1.4.2. Configuration Examples . 19 3.1.4.3. Default ManagedExecutorService. 22 3.1.5. System Administrator’s Responsibilities. 22 3.1.6. Lifecycle . 22 3.1.6.1. Jakarta EE Product Provider Requirements . 23 3.1.7. Quality of Service . 24 3.1.8. Transaction Management. 24 3.1.8.1. Jakarta EE Product Provider Requirements . -
Conflict Resolution in a Recursive Descent Compiler Generator
LL(1) Conflict Resolution in a Recursive Descent Compiler Generator Albrecht Wöß, Markus Löberbauer, Hanspeter Mössenböck Johannes Kepler University Linz, Institute of Practical Computer Science, Altenbergerstr. 69, 4040 Linz, Austria {woess,loeberbauer,moessenboeck}@ssw.uni-linz.ac.at Abstract. Recursive descent parsing is restricted to languages whose grammars are LL(1), i.e., which can be parsed top-down with a single lookahead symbol. Unfortunately, many languages such as Java, C++, or C# are not LL(1). There- fore recursive descent parsing cannot be used or the parser has to make its deci- sions based on semantic information or a multi-symbol lookahead. In this paper we suggest a systematic technique for resolving LL(1) conflicts in recursive descent parsing and show how to integrate it into a compiler gen- erator (Coco/R). The idea is to evaluate user-defined boolean expressions, in order to allow the parser to make its parsing decisions where a one symbol loo- kahead does not suffice. Using our extended compiler generator we implemented a compiler front end for C# that can be used as a framework for implementing a variety of tools. 1 Introduction Recursive descent parsing [16] is a popular top-down parsing technique that is sim- ple, efficient, and convenient for integrating semantic processing. However, it re- quires the grammar of the parsed language to be LL(1), which means that the parser must always be able to select between alternatives with a single symbol lookahead. Unfortunately, many languages such as Java, C++ or C# are not LL(1) so that one either has to resort to bottom-up LALR(1) parsing [5, 1], which is more powerful but less convenient for semantic processing, or the parser has to resolve the LL(1) con- flicts using semantic information or a multi-symbol lookahead.