This document provides an introduction to bytecode instrumentation (BCI) for beginners. It defines BCI as modifying Java classes without source code by instrumenting bytecode. It explains that BCI is supported by the Java Virtual Machine and can be used for profiling, monitoring, code coverage and more. Practical examples are provided on how to get started with BCI using frameworks like ASM, as well as javac and javap.
Introduction to PackedObjects
JavaOne 2013 CON5758
Ryan A. Sciampacone, Senior Software Developer, IBM JTC
Abstract: In Java the layout of objects is abstracted away from the application, leaving Java inherently challenged by concerns such as (1) interoperation with native data structures, (2) the dense packing of Java objects, and (3) cache conflicts and false sharing. With PackedObjects, there is a proposal for a new explicit object model that enables direct binding of native data structures, dense packing of Java objects to improve the performance of operations such as serialization, and precise object layout to allow for finer-grained control over locality and the development of a high-performance concurrent library. Learn more in this session.
QCon Shanghai: Trends in Application DevelopmentChris Bailey
Presented at QCon Shanghai:
Trends in Application Development
The last few years have seen a number of growing trends in application development, driven by the disruptive changes around cloud, mobile and engaging applications. These have led to a wider set of languages being used for production applications, the emergence of asynchronous and reactive programming, and interest in micro-services based architectures. This keynote will review some of the growing trends in application development, and highlight which skills you should be developing and which architectures you should be using.
9 crucial Java Design Principles you cannot missMark Papis
Encapsulation, Polymorphism, Agreggation / Composition, Overloading, Inheritance vs Composition, DRY, Dependency Injection, Delagation, Law of demeter, Principle of leas knowledge,
Node Summit 2016: Web App ArchitecturesChris Bailey
While Node.js is becoming the platform of choice for web-scale applications, enterprises are resistant to change and have legacy applications based on other technologies, typically Java. Emerging web application architectures bring together the web-scale and integrated browser characteristics of Node.js with the transactional nature of Java to deliver high-performance, engaging web applications. Learn how the complimentary characteristics of Node.js and Java are being used to build the next generation of web applications.
Introduction to PackedObjects
JavaOne 2013 CON5758
Ryan A. Sciampacone, Senior Software Developer, IBM JTC
Abstract: In Java the layout of objects is abstracted away from the application, leaving Java inherently challenged by concerns such as (1) interoperation with native data structures, (2) the dense packing of Java objects, and (3) cache conflicts and false sharing. With PackedObjects, there is a proposal for a new explicit object model that enables direct binding of native data structures, dense packing of Java objects to improve the performance of operations such as serialization, and precise object layout to allow for finer-grained control over locality and the development of a high-performance concurrent library. Learn more in this session.
QCon Shanghai: Trends in Application DevelopmentChris Bailey
Presented at QCon Shanghai:
Trends in Application Development
The last few years have seen a number of growing trends in application development, driven by the disruptive changes around cloud, mobile and engaging applications. These have led to a wider set of languages being used for production applications, the emergence of asynchronous and reactive programming, and interest in micro-services based architectures. This keynote will review some of the growing trends in application development, and highlight which skills you should be developing and which architectures you should be using.
9 crucial Java Design Principles you cannot missMark Papis
Encapsulation, Polymorphism, Agreggation / Composition, Overloading, Inheritance vs Composition, DRY, Dependency Injection, Delagation, Law of demeter, Principle of leas knowledge,
Node Summit 2016: Web App ArchitecturesChris Bailey
While Node.js is becoming the platform of choice for web-scale applications, enterprises are resistant to change and have legacy applications based on other technologies, typically Java. Emerging web application architectures bring together the web-scale and integrated browser characteristics of Node.js with the transactional nature of Java to deliver high-performance, engaging web applications. Learn how the complimentary characteristics of Node.js and Java are being used to build the next generation of web applications.
Slides of my Perl 6 DBDI (database interface) talk at YAPC::EU in August 2010. Please also see the fun screencast that includes a live demo of perl6 using a perl5 DBI driver: http://timbunce.blip.tv/file/3973550/
JavaOne 2011: Migrating Spring Applications to Java EE 6Bert Ertman
The Spring Framework has no-doubt played a major role in evolving the way we write enterprise applications on the Java platform today. However, it is still a proprietary framework owned by a single company. The age of having to rely on such proprietary frameworks in order to develop decent enterprise applications is now over and Java EE 6 has become an even easier way to develop enterprise applications based on standards which makes it the best choice for any enterprise application. In this session you will experience how to migrate a typical full stack Spring application to a standards based, completely portable, Java EE 6 application including integration tests.
UNIT – 5
PART- II
JDBC DRIVER AND ITS TYPES
DATABASE URL FORMULATION
CREATE CONNECTION OBJECT
CLOSING JDBC CONNECTIONS
DATA TYPES
RESULT SETS
CONCURRENCY OF RESULTSET
VIEWING A RESULT SET
TRANSACTIONS
COMMIT & ROLLBACK
JavaScript Frameworks and Java EE – A Great MatchReza Rahman
The sea change in JavaScript frameworks is shifting the pendulum away from today's thin-client based server-side web frameworks like Spring MVC and JSF to JavaScript powered rich clients. With strong support for REST, WebSocket and JSON, Java EE is well positioned to adapt to this landscape.
In this heavily code driven session, we will show you how you can utilize today's most popular JavaScript frameworks like AngularJS and React to utilize the core strengths of Java EE using JAX-RS, WebSocket, JSON-P, JSON-B, CDI and Bean Validation.
HTTP/2 comes to Java. What Servlet 4.0 means to you. DevNexus 2015Edward Burns
It’s hard to overstate how much has changed in the world since HTTP 1.1 went final in June of 1999. There were no smartphones, Google had not yet IPO’d, Java Swing was less than a year old… you get the idea. Yet for all that change, HTTP remains at version 1.1.
Change is finally coming. HTTP 2.0 should be complete by 2015, and with that comes the need for a new version of Servlet. It will embrace HTTP 2.0 and expose its key features to Java EE 8 applications. This session gives a peek into the progress of the Servlet spec and shares some ideas about how developers can take advantage of this exciting
update to the world’s most successful application protocol on the world’s most popular programming language.
Spring tutorial for beginners - Learn Java Spring Framework version 3.1.0 starting from environment setup, inversion of control (IoC), dependency injection, bean scopes, bean life cycle, inner beans, autowiring, different modules, aspect oriented programming (AOP), database access (JDBC), Transaction Management, Web MVC framework, Web Flow, Exception handling, EJB integration and Sending email etc.
Under the Hood of the Testarossa JIT CompilerMark Stoodley
JavaOne 2016 presentation slides on the Testarossa Just In Time compiler technology from the IBM J9 Java Virtual Machine, which IBM is contributing to open source (800KLOC to date on github at the Eclipse OMR project). This talk covers both the overall structure of the compiler and provides some details on the dynamic AOT technology available in Testarossa since 2006.
Building a right sized, do-anything runtime using OSGi technologies: a case s...mfrancis
The WebSphere Application Server Liberty profile uses several OSGi technologies in addition to the Equinox OSGi framework: Configuration Admin, Metatype, and Declarative Services being first and foremost among them.
In this talk, I'll go over how Liberty uses these technologies to create a dynamic flexible runtime that can be right-sized based on the server's configuration. I'll share the lessons we've learned, and what we consider to be best practice for interacting with these three services.
Bio:
Erin Schnabel is the Development lead for the WebSphere Application Server Liberty profile. She has over 12 years of experience in the WebSphere Application Server development organization in various technical roles. Erin has over 15 years of experience working with Java and application middleware across various hardware platforms, including IBM z/OS®. She specializes in composable runtimes, including the application of OSGi, object-oriented and service-oriented technologies and design patterns to decompose existing software systems into flexible, composable units.
J9: Under the hood of the next open source JVMDanHeidinga
A description of how bytecodes are loaded into the J9VM and how bytecode execution occurs, plus IBM's plans to open source J9.
Session is the "new hire" talk given to all new J9 VM team members.
Slides of my Perl 6 DBDI (database interface) talk at YAPC::EU in August 2010. Please also see the fun screencast that includes a live demo of perl6 using a perl5 DBI driver: http://timbunce.blip.tv/file/3973550/
JavaOne 2011: Migrating Spring Applications to Java EE 6Bert Ertman
The Spring Framework has no-doubt played a major role in evolving the way we write enterprise applications on the Java platform today. However, it is still a proprietary framework owned by a single company. The age of having to rely on such proprietary frameworks in order to develop decent enterprise applications is now over and Java EE 6 has become an even easier way to develop enterprise applications based on standards which makes it the best choice for any enterprise application. In this session you will experience how to migrate a typical full stack Spring application to a standards based, completely portable, Java EE 6 application including integration tests.
UNIT – 5
PART- II
JDBC DRIVER AND ITS TYPES
DATABASE URL FORMULATION
CREATE CONNECTION OBJECT
CLOSING JDBC CONNECTIONS
DATA TYPES
RESULT SETS
CONCURRENCY OF RESULTSET
VIEWING A RESULT SET
TRANSACTIONS
COMMIT & ROLLBACK
JavaScript Frameworks and Java EE – A Great MatchReza Rahman
The sea change in JavaScript frameworks is shifting the pendulum away from today's thin-client based server-side web frameworks like Spring MVC and JSF to JavaScript powered rich clients. With strong support for REST, WebSocket and JSON, Java EE is well positioned to adapt to this landscape.
In this heavily code driven session, we will show you how you can utilize today's most popular JavaScript frameworks like AngularJS and React to utilize the core strengths of Java EE using JAX-RS, WebSocket, JSON-P, JSON-B, CDI and Bean Validation.
HTTP/2 comes to Java. What Servlet 4.0 means to you. DevNexus 2015Edward Burns
It’s hard to overstate how much has changed in the world since HTTP 1.1 went final in June of 1999. There were no smartphones, Google had not yet IPO’d, Java Swing was less than a year old… you get the idea. Yet for all that change, HTTP remains at version 1.1.
Change is finally coming. HTTP 2.0 should be complete by 2015, and with that comes the need for a new version of Servlet. It will embrace HTTP 2.0 and expose its key features to Java EE 8 applications. This session gives a peek into the progress of the Servlet spec and shares some ideas about how developers can take advantage of this exciting
update to the world’s most successful application protocol on the world’s most popular programming language.
Spring tutorial for beginners - Learn Java Spring Framework version 3.1.0 starting from environment setup, inversion of control (IoC), dependency injection, bean scopes, bean life cycle, inner beans, autowiring, different modules, aspect oriented programming (AOP), database access (JDBC), Transaction Management, Web MVC framework, Web Flow, Exception handling, EJB integration and Sending email etc.
Under the Hood of the Testarossa JIT CompilerMark Stoodley
JavaOne 2016 presentation slides on the Testarossa Just In Time compiler technology from the IBM J9 Java Virtual Machine, which IBM is contributing to open source (800KLOC to date on github at the Eclipse OMR project). This talk covers both the overall structure of the compiler and provides some details on the dynamic AOT technology available in Testarossa since 2006.
Building a right sized, do-anything runtime using OSGi technologies: a case s...mfrancis
The WebSphere Application Server Liberty profile uses several OSGi technologies in addition to the Equinox OSGi framework: Configuration Admin, Metatype, and Declarative Services being first and foremost among them.
In this talk, I'll go over how Liberty uses these technologies to create a dynamic flexible runtime that can be right-sized based on the server's configuration. I'll share the lessons we've learned, and what we consider to be best practice for interacting with these three services.
Bio:
Erin Schnabel is the Development lead for the WebSphere Application Server Liberty profile. She has over 12 years of experience in the WebSphere Application Server development organization in various technical roles. Erin has over 15 years of experience working with Java and application middleware across various hardware platforms, including IBM z/OS®. She specializes in composable runtimes, including the application of OSGi, object-oriented and service-oriented technologies and design patterns to decompose existing software systems into flexible, composable units.
J9: Under the hood of the next open source JVMDanHeidinga
A description of how bytecodes are loaded into the J9VM and how bytecode execution occurs, plus IBM's plans to open source J9.
Session is the "new hire" talk given to all new J9 VM team members.
Java programming presentations By Daroko blog
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Introduction to Java Programming, Basic Structure, variables Data type, input...Mr. Akaash
This is First Lecture of java Programming which cover all basic points (ie. History and feature of java, Introduction to java, about variables data type and compilation....
Java can be used two types of programs: applications & applets.An application is a program that runs on your computer, under the operating system of that computer.
An applets is an application designed to be transmitted over the Internet and executed by a java-compatible Web Browser. An applet is an executable program that runs inside a browser, such as Netscape or Internet Explorer.
Java is a general-purpose; object oriented programming language developed by Sun Microsystems of USA in 1991. This language was initially called “Oak” by James Gosling, but was renamed “Java” in 1995. Java (with a capital J) is a high-level, third generation programming language, like C, Fortran, Smalltalk, Perl, and many others.Java was initially designed to solve on a small scale could also be applied to the Internet on a large scale. This realization caused the focus of Java to switch from consumer electronic to Internet Programming.Java was designed for the development of software for consumer electronic devices like TVs, VCRs, Toasters, Microwaves ovens and such other electronics devices.Java is a first programming language that is not tied to any particular hardware or operating system. Programs developed in Java can be executed anywhere on any system.
After a brief recap of what p2 is and depicting the overall vision, the presenter will show how this vision is realized and how the improvements made to both the runtime (core and UI) and the tooling in Galileo pave the way for a better provisioning solution at Eclipse.
Generative AI Deep Dive: Advancing from Proof of Concept to ProductionAggregage
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Observability Concepts EVERY Developer Should Know -- DeveloperWeek Europe.pdfPaige Cruz
Monitoring and observability aren’t traditionally found in software curriculums and many of us cobble this knowledge together from whatever vendor or ecosystem we were first introduced to and whatever is a part of your current company’s observability stack.
While the dev and ops silo continues to crumble….many organizations still relegate monitoring & observability as the purview of ops, infra and SRE teams. This is a mistake - achieving a highly observable system requires collaboration up and down the stack.
I, a former op, would like to extend an invitation to all application developers to join the observability party will share these foundational concepts to build on:
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
A tale of scale & speed: How the US Navy is enabling software delivery from l...sonjaschweigert1
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
How to Get CNIC Information System with Paksim Ga.pptxdanishmna97
Pakdata Cf is a groundbreaking system designed to streamline and facilitate access to CNIC information. This innovative platform leverages advanced technology to provide users with efficient and secure access to their CNIC details.
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!SOFTTECHHUB
As the digital landscape continually evolves, operating systems play a critical role in shaping user experiences and productivity. The launch of Nitrux Linux 3.5.0 marks a significant milestone, offering a robust alternative to traditional systems such as Windows 11. This article delves into the essence of Nitrux Linux 3.5.0, exploring its unique features, advantages, and how it stands as a compelling choice for both casual users and tech enthusiasts.
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
In the rapidly evolving landscape of technologies, XML continues to play a vital role in structuring, storing, and transporting data across diverse systems. The recent advancements in artificial intelligence (AI) present new methodologies for enhancing XML development workflows, introducing efficiency, automation, and intelligent capabilities. This presentation will outline the scope and perspective of utilizing AI in XML development. The potential benefits and the possible pitfalls will be highlighted, providing a balanced view of the subject.
We will explore the capabilities of AI in understanding XML markup languages and autonomously creating structured XML content. Additionally, we will examine the capacity of AI to enrich plain text with appropriate XML markup. Practical examples and methodological guidelines will be provided to elucidate how AI can be effectively prompted to interpret and generate accurate XML markup.
Further emphasis will be placed on the role of AI in developing XSLT, or schemas such as XSD and Schematron. We will address the techniques and strategies adopted to create prompts for generating code, explaining code, or refactoring the code, and the results achieved.
The discussion will extend to how AI can be used to transform XML content. In particular, the focus will be on the use of AI XPath extension functions in XSLT, Schematron, Schematron Quick Fixes, or for XML content refactoring.
The presentation aims to deliver a comprehensive overview of AI usage in XML development, providing attendees with the necessary knowledge to make informed decisions. Whether you’re at the early stages of adopting AI or considering integrating it in advanced XML development, this presentation will cover all levels of expertise.
By highlighting the potential advantages and challenges of integrating AI with XML development tools and languages, the presentation seeks to inspire thoughtful conversation around the future of XML development. We’ll not only delve into the technical aspects of AI-powered XML development but also discuss practical implications and possible future directions.
Dr. Sean Tan, Head of Data Science, Changi Airport Group
Discover how Changi Airport Group (CAG) leverages graph technologies and generative AI to revolutionize their search capabilities. This session delves into the unique search needs of CAG’s diverse passengers and customers, showcasing how graph data structures enhance the accuracy and relevance of AI-generated search results, mitigating the risk of “hallucinations” and improving the overall customer journey.
As the title of the session suggests, the idea was to get together people who are interested in BCI, but don't yet know where they are going with it. I'm not a world expert! Can help you avoid some of the pitfalls (new lines in jar manifest files) Suggestions for tools to help you
Bytecode technically refers to the opcodes in a class, that is the method bodies. However, the whole class file can be modified BCI can be added/removed at will while an application is running
Not a hack, Been available since java 5
At load time can do almost anything: Restrictions: You can't go mad! If you removed a method from a class which implements an interface, the class would no longer verify, and would fail to load Some things can't be done whilst running maybe allow you to replace a newer version if for some reason it was difficult to get a new version/recompile
Examples: Monitoring, logging/tracing, profiling Servlets running in an application server (tomcat, websphere, glassfish) Running the server, no idea what the application does Can inject instrumentation at the top of this method to record URL, time taken, where the request has come from..
There are other mechanisms for doing some of the things mentioned previously Why do them using BCI?
My main focus is dynamic BCI, where the classes are modified either as the JVM loads the classes, or whilst an application is running. Agents can be written in c, or java. Java agents are easier to deal with JVMTI has a larger interface, allows your agent to do more than just BCI
Remember the new line at the end of the manifest!
A class file transformer gets a call back whenver a new class is loaded Retransform is how you trigger modifcation of an already running class
All transformations boil down to: Take an array of bytes, copy and modify the array, give it back to the JVM
Offline- all of the above would be done by reading in a class file into a byte array
Summary Java SDK provides a mechanism for transforming classes Gives you a a byte array Not very much other help Now, need some help to actually twiddle the bytes
The following slides focus on making it easy to add new logic to an existing class Other frameworks are available Javassist, bcel n.b A basic understanding of how a JVM works is still required
Easier to learn, but non-trivial java api Does provide helper methods to do make common tasks easier (e.g. local variable sorter) Now give brief overview, No details emphasis, this is just java, and there are only 3 classes and three methods
This is class one, create a new instance of a method adapter
In method adapter, override one method, create a MethodAdapter class
This gets you to the point of: My class is parsed, I have a method body to create/modify ASM provides methods to add bytecodes but Doesn't tell you what bytecodes to add! Knowledge of the JVM architecture is still required Next step, make creating new logic easier
This is just part of the output of javap Also includes the whole of the constant pool Every method in the class All the meta data (stack maps, line number tabel, variable table) Not much help to go rebuild a similar method in your agent But I do recommend it as a help to understanding how the JVM works
Show the profiler logic in java show the bci logic in java Show byte code plugin to turn that into ASM (show view, other, byte code, use switch to change between asm and non-asm) Paste ASM code into boiler plate method transformer
The following slides focus on the task of - adding new logic to an existing class n.b A basic understanding of how a JVM works is still required