Java Tutorial or Core Java Tutorial or Java Programming Tutorial is a widely used robust technology. Let's start learning Java from basic questions like what is Java tutorial, Core Java, where it is used, what type of applications are created in Java, why use java and Java platforms etc. Our Java tutorial helps you to learn Java with easy and simple examples.
Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented,[15] and specifically designed to have as few implementation dependencies as possible
Introduction to Java : Feature to Java, Java Virtual Machine, Differences between C++ and Java,
Part of Java, API Document, Starting a Java Program. Important Classes, Formatting the Output
Introduction to Java program. Hello World.java. Java Virtual Machine Architecture and how it is working. JVM class loader, Run time Memory, and Execution Engine.
Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented,[15] and specifically designed to have as few implementation dependencies as possible
Introduction to Java : Feature to Java, Java Virtual Machine, Differences between C++ and Java,
Part of Java, API Document, Starting a Java Program. Important Classes, Formatting the Output
Introduction to Java program. Hello World.java. Java Virtual Machine Architecture and how it is working. JVM class loader, Run time Memory, and Execution Engine.
A presentation on core java. in this ppt there are all the basic informations on the core java suvh as-
Features of Java
Java Program Translation
Java Virtual Machine
Java system overview
Java Program-Development phase
Advantage of java
Disadvantage of java
Project
JRE , JDK and platform independent nature of JAVAMehak Tawakley
Java programming language was originally developed by Sun Microsystems which was initiated by James Gosling and released in 1995 as core component of Sun Microsystems.
JRE stands for Java Runtime Environment which is used to provide an environment at runtime.
JVM or Java Virtual Machine is the medium which compiles Java code to bytecode which gets interpreted on a different machine and hence it makes it Platform/ Operating system independent.
JDK (Java SE Development Kit) Includes a complete JRE (Java Runtime Environment) plus tools for developing, debugging, and monitoring Java applications.
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 was developed by Sun Microsystems Inc in 1991, later acquired by Oracle Corporation. It was developed by James Gosling and Patrick Naughton. It is a simple programming language. Writing, compiling and debugging a program is easy in java. It helps to create modular programs and reusable code.
Previously we had begin with Java Tutorial beginners guide featuring – What is Java , features of Java Programming Language , Java editors and different Java editions and Java Application Types . Now on Java tutorial we begin with the section 2 that is about JVM – Java Virtual Machine . And also about the difference between JDK Vs JRE Vs JVM including other aspects of Java Virtual Machine .
https://maccablo.com/java-virtual-machine-jdk-jre-jvm/
JDK stand for java development kit.
JVM stands for Java Virtual Machine.
JRE is the responsible unit to run the java program.
JIT stands for Just In Time compiler.
A presentation on core java. in this ppt there are all the basic informations on the core java suvh as-
Features of Java
Java Program Translation
Java Virtual Machine
Java system overview
Java Program-Development phase
Advantage of java
Disadvantage of java
Project
JRE , JDK and platform independent nature of JAVAMehak Tawakley
Java programming language was originally developed by Sun Microsystems which was initiated by James Gosling and released in 1995 as core component of Sun Microsystems.
JRE stands for Java Runtime Environment which is used to provide an environment at runtime.
JVM or Java Virtual Machine is the medium which compiles Java code to bytecode which gets interpreted on a different machine and hence it makes it Platform/ Operating system independent.
JDK (Java SE Development Kit) Includes a complete JRE (Java Runtime Environment) plus tools for developing, debugging, and monitoring Java applications.
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 was developed by Sun Microsystems Inc in 1991, later acquired by Oracle Corporation. It was developed by James Gosling and Patrick Naughton. It is a simple programming language. Writing, compiling and debugging a program is easy in java. It helps to create modular programs and reusable code.
Previously we had begin with Java Tutorial beginners guide featuring – What is Java , features of Java Programming Language , Java editors and different Java editions and Java Application Types . Now on Java tutorial we begin with the section 2 that is about JVM – Java Virtual Machine . And also about the difference between JDK Vs JRE Vs JVM including other aspects of Java Virtual Machine .
https://maccablo.com/java-virtual-machine-jdk-jre-jvm/
JDK stand for java development kit.
JVM stands for Java Virtual Machine.
JRE is the responsible unit to run the java program.
JIT stands for Just In Time compiler.
This is a seminar given by P. Nikhil (me) of Government Arts College, Rajahmundry.
This document contains Java and its features.
There is a wide range in usage of Java around the World .
Hope this document helps anyone who's interested in it.
Thank You
Introduction to Java: History, Versioning, The Java Virtual Machine, Byte code, Writing simple
java program, Language Components: Primitive Data Types, Comments, Keywords, literals, The
break Statement, The continue Statement, Operators – Casts and Conversions, Arrays. Introduction
to classes and methods, constructors, Passing Objects to Methods, Method Overloading, Static and
final, The this Reference, finalize, inner and nested classes. Inheriting class, extends, member
access and inheritance, super keyword, Object class. Dynamic method dispatch, method overriding,
abstract class, interface, packages, import statement
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.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
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/
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
2. What is Java?
Java is a programming language and a platform.
Java is a high level, robust, secured and object-
oriented programming language.
Platform: Any hardware or software environment
in which a program runs, is known as a platform.
Since Java has its own runtime environment (JRE)
and API, it is called platform.
3. Where it is used?
Desktop Applications such as acrobat reader, media
player, antivirus etc.
Web Applications such as irctc.co.in, javatpoint.com
etc.
Enterprise Applications such as banking applications.
Mobile
Embedded System
Smart Card
Robotics
Games etc.
4. Types of Java Applications
1) Standalone Application
It is also known as desktop application or window-based
application. An application that we need to install on every
machine such as media player, antivirus etc. AWT and Swing
are used in java for creating standalone applications.
5. 2) Web Application
An application that runs on the server side and creates
dynamic page, is called web application. Currently, servlet,
jsp. technologies are used for creating web applications in
java.
3) Enterprise Application
An application that is distributed in nature, such as banking
applications etc. It has the advantage of high level security,
load balancing and clustering. In java, EJB is used for
creating enterprise applications.
6. 4) Mobile Application
An application that is created for mobile devices.
Currently Android and Java ME are used for
creating mobile applications.
7. History of Java
Java history is interesting to know. The history of java
starts from Green Team. Java team members (also
known as Green Team), initiated a revolutionary task to
develop a language for digital devices such as set-top
boxes, televisions etc.
Java is used in internet programming, mobile devices,
games, e-business solutions etc.
8. Firstly, it was called "Greentalk" by James Gosling and file
extension was .gt.
After that, it was called Oak and was developed as a part of
the Green project.
Why Oak? Oak is a symbol of strength and choosen as a
national tree of many countries like U.S.A., France, Germany,
Romania etc.
In 1995, Oak was renamed as "Java" because it was already
a trademark by Oak Technologies.
9. Java is an island of Indonesia where first coffee was produced
(called java coffee).
Notice that Java is just a name not an acronym.
Originally developed by James Gosling at Sun Microsystems
(which is now a subsidiary of Oracle Corporation) and released in
1995.
In 1995, Time magazine called Java one of the Ten Best
Products of 1995.
JDK 1.0 released in(January 23, 1996).
10.
11. Simple
Java language is simple because:
syntax is based on C++ (so easier for programmers to
learn it after C++).
removed many confusing and/or rarely-used features e.g.,
explicit pointers, operator overloading etc.
No need to remove unreferenced objects because there is
Automatic Garbage Collection in java.
13. Platform Independent
There are two types of platforms software-based and
hardware-based. Java provides software-based platform.
it is a software-based platform that runs on the top of other
hardware-based platforms.
Java code is compiled by the compiler and converted into
bytecode. This bytecode is a platform-independent code
because it can be run on multiple platforms i.e. Write Once
and Run Anywhere(WORA).
16. Java is secured because:
o No explicit pointer
o Java Programs run inside virtual machine .
o Classloader: adds security by separating the
package for the classes of the local file system from
those that are imported from network sources.
17. Bytecode Verifier:
checks the code fragments for illegal code that can violate
access right to objects.
Security Manager:
determines what resources a class can access such as
reading and writing to the local disk.
These security are provided by java language.
18. Robust
Robust simply means strong. Java uses strong
memory management. There are lack of pointers that
avoids security problem. There is automatic garbage
collection in java. There is exception handling and
type checking mechanism in java. All these points
makes java robust.
19. Architecture-neutral
There is no implementation dependent features e.g. size of
primitive types is fixed.
In C programming, int data type occupies 2 bytes of
memory for 32-bit architecture and 4 bytes of memory for
64-bit architecture. But in java, it occupies 4 bytes of
memory for both 32 and 64 bit architectures.
20. Portable
We may carry the java bytecode to any platform.
High-performance
Java is faster than traditional interpretation since byte
code is "close" to native code still somewhat slower than a
compiled language (e.g., C++)
21. Distributed
We can create distributed applications in java. RMI
and EJB are used for creating distributed applications.
We may access files by calling the methods from any
machine on the internet.
22. Wrapper classes
The object of the wrapper class contains or wraps its
respective primitive data type. Converting primitive data
types into object is called boxing, and this is taken care
by the compiler.
23. Primitive Type Wrapper class
boolean Boolean
char Character
byte Byte
short Short
int Integer
long Long
float Float
double Double
24. public class Test {
public static void main(String args[]) {
Integer x = 5; // boxes int to an Integer object
x = x + 10; // unboxes the Integer to a int
System.out.println(x);
}
}
Output
15
When x is assigned an integer value, the compiler boxes the integer because x is
integer object. Later, x is unboxed so that they can be added as an integer.
25. 1.public class WrapperExample1{
2.public static void main(String args[]){
3.//Converting int into Integer
4.int a=20;
5.Integer i=Integer.valueOf(a);//converting int
into Integer
6.Integer j=a;//autoboxing, now compiler will
write Integer.valueOf(a) internally
7.
8.System.out.println(a+" "+i+" "+j);
9.}}