Expressions perform operations on data and move data around. Some expressions will be evaluated for their results, some for their side effects, some for both. An expression can have three kinds of result:
a value, such as the result of: (4 * i)
a variable, such as the result of: i = 4
nothing (in the case of an invocation of a method declared as void)
An expression that results in a variable is called an lvalue in C++ and many other languages. A variable expression in Java is the same thing, the Java Language Specification just uses the name variable instead of lvalue. Such an expression can be used on the left hand side of an assignment operator. Side effects come about when an expression includes an assignment, increment, decrement, or method invocation.
In Java language there are several keywords that are used to alter the flow of the program. Statements can be executed multiple times or only under a specific condition. The if, else, and switch statements are used for testing conditions, the while and for statements to create cycles, and the break and continue statements to alter a loop.
When the program is run, the statements are executed from the top of the source file to the bottom. One by one.
Java is a computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.
In this you learn about Control Statements
1. Selection Statements
i. If
ii. If-else
iii. Nested-if
iv. If-Elseif ladder
2. Looping Statements
i. while loop
ii. do-while loop
iii. For loop
3. Jumping Statements
i. break
ii. continue
iii return
In this core java training session, you will learn Exception Handling. Topics covered in this session are:
• Exception Handling
• Exception Class hierarchy
• Types of Exception
• Keywords for Exception Handling
For more information about this course visit on this link: https://www.mindsmapped.com/courses/software-development/learn-java-fundamentals-hands-on-training-on-core-java-concepts/
This presentation is simply based on control statement. I have explained the basic definition and syntax, flow diagram, selection statement, iteration statement, and jump statement in this presentation.
If you like this presentation, then like, comment and share
Chapter 2 : Programming with Java StatementsIt Academy
Exam Objective 4.1 Describe, compare, and contrast these three fundamental types of statements: assignment, conditional, and iteration, and given a description of an algorithm, select the appropriate type of statement to design the algorithm
Java is a computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.
Control structures in C++ Programming LanguageAhmad Idrees
The aim of this list of programming languages is to include all notable programming languages in existence, both those in current use and ... Note: This page does not list esoteric programming languages. .... Computer programming portal ...
Core Java Programming Language (JSE) : Chapter VIII - Exceptions and AssertionsWebStackAcademy
An exception is an unwanted or unexpected event, which occurs during the execution of a program i.e at run time, that disrupts the normal flow of the program’s instructions.
All exception and errors types are sub classes of class Throwable, which is base class of hierarchy.One branch is headed by Exception. This class is used for exceptional conditions that user programs should catch. NullPointerException is an example of such an exception.Another branch,Error are used by the Java run-time system(JVM) to indicate errors having to do with the run-time environment itself(JRE). StackOverflowError is an example of such an error.
An assertion allows testing the correctness of any assumptions that have been made in the program.
Assertion is achieved using the assert statement in Java. While executing assertion, it is believed to be true. If it fails, JVM throws an error named AssertionError. It is mainly used for testing purposes during development.
The assert statement is used with a Boolean expression and can be written in two different ways.
Java is a computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.
In this you learn about Control Statements
1. Selection Statements
i. If
ii. If-else
iii. Nested-if
iv. If-Elseif ladder
2. Looping Statements
i. while loop
ii. do-while loop
iii. For loop
3. Jumping Statements
i. break
ii. continue
iii return
In this core java training session, you will learn Exception Handling. Topics covered in this session are:
• Exception Handling
• Exception Class hierarchy
• Types of Exception
• Keywords for Exception Handling
For more information about this course visit on this link: https://www.mindsmapped.com/courses/software-development/learn-java-fundamentals-hands-on-training-on-core-java-concepts/
This presentation is simply based on control statement. I have explained the basic definition and syntax, flow diagram, selection statement, iteration statement, and jump statement in this presentation.
If you like this presentation, then like, comment and share
Chapter 2 : Programming with Java StatementsIt Academy
Exam Objective 4.1 Describe, compare, and contrast these three fundamental types of statements: assignment, conditional, and iteration, and given a description of an algorithm, select the appropriate type of statement to design the algorithm
Java is a computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.
Control structures in C++ Programming LanguageAhmad Idrees
The aim of this list of programming languages is to include all notable programming languages in existence, both those in current use and ... Note: This page does not list esoteric programming languages. .... Computer programming portal ...
Core Java Programming Language (JSE) : Chapter VIII - Exceptions and AssertionsWebStackAcademy
An exception is an unwanted or unexpected event, which occurs during the execution of a program i.e at run time, that disrupts the normal flow of the program’s instructions.
All exception and errors types are sub classes of class Throwable, which is base class of hierarchy.One branch is headed by Exception. This class is used for exceptional conditions that user programs should catch. NullPointerException is an example of such an exception.Another branch,Error are used by the Java run-time system(JVM) to indicate errors having to do with the run-time environment itself(JRE). StackOverflowError is an example of such an error.
An assertion allows testing the correctness of any assumptions that have been made in the program.
Assertion is achieved using the assert statement in Java. While executing assertion, it is believed to be true. If it fails, JVM throws an error named AssertionError. It is mainly used for testing purposes during development.
The assert statement is used with a Boolean expression and can be written in two different ways.
C++ CoreHard Autumn 2018. Concurrency and Parallelism in C++17 and C++20/23 -...corehard_by
What do threads, atomic variables, mutexes, and conditional variables have in common? They are the basic building blocks of any concurrent application in C++, which are even for the experienced C++ programmers a big challenge. This massively changed with C++17 and change even more with C++20/23. What did we get with C++17, what can we hope for with C++20/23? With C++17, most of the standard template library algorithms are available in sequential, parallel, and vectorised variants. With the upcoming standards, we can look forward to executors, transactional memory, significantly improved futures and coroutines. To make it short. These are just the highlights from the concurrent and parallel perspective. Thus there is the hope that in the future C++ abstractions such as executors, transactional memory, futures and coroutines are used and that threads, atomic variables, mutexes and condition variables are just implementation details.
This is a beginner-level programming session where you will learn the fundamentals of Java. Between each lesson, you'll have skill testing in the form of quizzes, as well as hands-on experience in the field.
Developer Tests - Things to Know (Vilnius JUG)vilniusjug
There are many great talks that discuss challenges developers face when writing software tests. In this talk let's look at test design problems that may seem to be simple but yet fundamentally important and often misunderstood even by experienced programmers.
Webstack Academy - Course Demo Webinar and Placement JourneyWebStackAcademy
At WebStack Academy, we understand the importance of providing valuable insights to aspiring professionals like yourself. That's why we host monthly webinars tailored to address the needs of ambitious individuals. Led by our esteemed experts - Mr. Jayakumar (Director, WebStack Academy) and Mr. Mubeen (Technology Head, WebStack Academy), the presentation will offer a firsthand understanding of industry trends, career pathways, and how our Full Stack course can be the catalyst to realizing your career aspirations.
WSA: Scaling Web Service to Handle Millions of Requests per SecondWebStackAcademy
In this presentation of Venkata Ramana Gollamudi, Principal Architect at Flipkart, as our esteemed speaker. With his expertise and experience, he'll guide us through the intricate process of “Scaling web service to handle millions of requests per second”.
Key Takeaways:
Understanding the specific challenges of scaling for Indian users
Strategies to ensure service availability, reduce latency, and maintain reliability
Leveraging tools like ELBs, K8s, message queues, and NoSQL databases effectively
Don't miss this unparalleled opportunity to gain invaluable insights and elevate your expertise in scaling web services to new heights.
We eagerly await your participation in this transformative webinar. Let's embark on the journey to mastering scalability together!
WSA: Course Demo Webinar - Full Stack Developer CourseWebStackAcademy
At WebStack Academy, we understand the importance of providing valuable insights to aspiring professionals like yourself. We host monthly webinars tailored to address the needs of ambitious individuals. Led by our esteemed experts - Mr. Jayakumar (Director, WebStack Academy) and Mr. Mubeen (Technology Head, WebStack Academy), these webinars presentation deck offer a firsthand understanding of industry trends, career pathways, and how our Full Stack course can be the catalyst to realizing your career aspirations.
Career Building in AI - Technologies, Trends and OpportunitiesWebStackAcademy
We from WSA always believe in sharing the right information and enabling you to make decisions for your long term career.
In this regard, Masterclass Webinar on "Career Building in AI - Technologies, Trends and Opportunities” by Renganathan Sekar - Product Manager, Artificial Intelligence - Samsung Research Institute.
Key takeaways from this slide deck:
*Gain a comprehensive overview of AI and its wide range of applications.
*Explore real-world use cases that exemplify the incredible potential of AI.
*Delve into the core technologies driving AI innovation.
*Stay ahead of recent trends in AI, including the intriguing concept of Gen AI.
*Uncover a wealth of opportunities in the AI landscape.
*Learn effective strategies to up skill and advance your career in the AI industry.
WSA Free online Internship for Web Development is an Online real-time experience for Engineering students. It will take you through a journey of skill building and project building experience. You will understand the various product development phases and skills required to work on any Web Application product in Industry.
A guide designed to help you master the art of web development. The roadmap provides a comprehensive step-by-step guide to learn foundational web technologies like HTML, CSS, & JavaScript, advanced frameworks, and concepts required for modern web development. It aims to equip aspiring developers with the necessary resources and tools to excel in the ever-evolving world of web development. 💡
Angular - Chapter 9 - Authentication and AuthorizationWebStackAcademy
Authentication is the process of validating a user on the credentials (username and password)
and provide access to the web application(ex: Email)
Authorization helps you to control access rights by granting or denying specific permissions
to an authenticated user (Ex: User / Manager / Admin).
Http Service will help us fetch external data, post to it, etc. We need to import the http module to make use of the http service. Let us consider an example to understand how to make use of the http service.
AngularFire is the officially supported AngularJS binding for Firebase. ... The focus of this library is to abstract much of the boilerplate involved in creating Angular bindings from Firebase to Angular, and to make it easy to create services that sync to your database.
A directive is a custom HTML element that is used to extend the power of HTML. Angular 2 has the following directives that get called as part of the BrowserModule module.
ngif
ngFor
If you view the app.module.ts file, you will see the following code and the BrowserModule module defined. By defining this module, you will have access to the 2 directives.
Angular - Chapter 4 - Data and Event HandlingWebStackAcademy
In Angular , events such as button click or any other sort of events can also be handled very easily. The events get triggered from the html page and are sent across to Angular JS class for further processing.
Data binding is a core concept in Angular and allows to define communication between a component and the DOM, making it very easy to define interactive applications without worrying about pushing and pulling data. There are four forms of data binding and they differ in the way the data is flowing.
Components are the most basic UI building block of an Angular app. An Angular app contains a tree of Angular components.
Angular components are a subset of directives, always associated with a template. Unlike other directives, only one component can be instantiated per an element in a template.
A component must belong to an NgModule in order for it to be available to another component or application. To make it a member of an NgModule, list it in the declarations field of the NgModule metadata.
TypeScript lets you write JavaScript the way you really want to. TypeScript is a typed superset of JavaScript that compiles to plain JavaScript. TypeScript is pure object oriented with classes, interfaces and statically typed like C# or Java. The popular JavaScript framework Angular 2.0 is written in TypeScript. Mastering TypeScript can help programmers to write object-oriented programs and have them compiled to JavaScript, both on server side and client side.
AngularJS is a structural framework for dynamic web apps. It lets you use HTML as your template language and lets you extend HTML's syntax to express your application's components clearly and succinctly. AngularJS's data binding and dependency injection eliminate much of the code you would otherwise have to write. And it all happens within the browser, making it an ideal partner with any server technology.
JavaScript String:
The String object lets you work with a series of characters; it wraps Javascript's string primitive data type with a number of helper methods.
As JavaScript automatically converts between string primitives and String objects, you can call any of the helper methods of the String object on a string primitive.
JavaScript Arrays:
The Array object lets you store multiple values in a single variable. It stores a fixed-size sequential collection of elements of the same type. An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type.
Debugging in JavaScript
It is common to have errors while writing codes and the errors can be due to syntax or logical. These errors create a lot of ambiguity in the logic and understanding of both users and programmers. There can also be errors in the code which can remain invisible to the programmer’s eye and can create havoc. To identify these errors we need Debuggers that can go through the entire code or program, identify the errors and also fix them.
-Debugger
The debugger keyword is used in the code to force stop the execution of the code at a breaking point and calls the debugging function. The debugger function is executed if any debugging is needed at all else no action is performed.
Form validation normally used to occur at the server, after the client had entered all the necessary data and then pressed the Submit button. If the data entered by a client was incorrect or was simply missing, the server would have to send all the data back to the client and request that the form be resubmitted with correct information. This was really a lengthy process which used to put a lot of burden on the server.
JavaScript provides a way to validate form's data on the client's computer before sending it to the web server. Form validation generally performs two functions.
Basic Validation − First of all, the form must be checked to make sure all the mandatory fields are filled in. It would require just a loop through each field in the form and check for data.
Data Format Validation − Secondly, the data that is entered must be checked for correct form and value. Your code must include appropriate logic to test correctness of data.
The Browser Object Model (BOM) in JavaScript includes the properties and methods for JavaScript to interact with the web browser.
BOM provides you with window object, for example, to show the width and height of the window. It also includes the window.screen object to show the width and height of the screen.
What is the DOM?
The DOM is a W3C (World Wide Web Consortium) standard.
The DOM defines a standard for accessing documents:
"The W3C Document Object Model (DOM) is a platform and language-neutral interface that allows programs and scripts to dynamically access and update the content, structure, and style of a document."
The W3C DOM standard is separated into 3 different parts:
Core DOM - standard model for all document types
XML DOM - standard model for XML documents
HTML DOM - standard model for HTML documents
The HTML DOM (Document Object Model)
When a web page is loaded, the browser creates a Document Object Model of the page.
The HTML DOM model is constructed as a tree of Objects.
With the HTML DOM, JavaScript can access and change all the elements of an HTML document.
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/
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
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.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
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.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
2. www.webstackacademy.com
Objectives
● Distinguish between instance and local variables
● Describe how to initialize instance variables
● Identify and correct a Possible reference before
assignment compiler error
● Recognize, describe, and use Java software operators
● Distinguish between legal and illegal assignments of
primitive types
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Objectives
● Identify boolean expressions and their requirements in control
constructs
● Recognize assignment compatibility and required casts in
fundamental types
● Use if, switch, for, while, and do constructions and the labelled
forms of break and continue as flow control structures in a program
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Relevance
● What types of variables are useful to programmers?
● Can multiple classes have variables with the same name and, if so,
what is their scope?
● What types of control structures are used in other languages? What
methods do these languages use to control flow?
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Variables and Scope
Local variables are:
● Variables that are defined inside a method and are called local,
automatic, temporary, or stack variables
● Variables that are created when the method is executed are
destroyed when the method is exited
Variable initialization comprises the following:
● Local variables require explicit initialization.
● Instance variables are initialized automatically.
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Right-Shift Operators >>
and >>>
● Arithmetic or signed right shift ( >> ) operator:
● Examples are:
– 128 >> 1 returns 128/2 1 = 64
– 256 >> 4 returns 256/2 4 = 16
– -256 >> 4 returns -256/2 4 = -16
● The sign bit is copied during the shift.
● Logical or unsigned right-shift ( >>> ) operator:
– This operator is used for bit patterns.
– The sign bit is not copied during the shift.
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String Concatenation With +
● The + operator works as follows:
– Performs String concatenation
– Produces a new String:
String salutation = "Dr.";
String name = "Pete" + " " + "Seymour";
String title = salutation + " " + name;
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Casting
● If information might be lost in an assignment, the programmer must
confirm the assignment with a cast.
● The assignment between long and int requires an explicit cast.
long bigValue = 99L;
int squashed = bigValue;// Wrong, needs a cast
int squashed = (int) bigValue; // OK
int squashed = 99L;// Wrong, needs a cast
int squashed = (int) 99L;// OK, but...
int squashed = 99; // default integer literal
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Promotion and Casting
of Expressions
● Variables are promoted automatically to a longer form (such as int to
long).
● Expression is assignment-compatible if the variable type is at least as
large
long bigval = 6;// 6 is an int type, OK
int smallval = 99L; // 99L is a long, illegal
double z = 12.414F;// 12.414F is float, OK
float z1 = 12.414; // 12.414 is double, illegal
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Simple if, else Statements
● The if statement syntax:
if ( <boolean_expression> )
<statement_or_block>
● Example:
if ( x < 10 )
System.out.println("Are you finished yet?");
or (recommended):
if ( x < 10 ) {
System.out.println("Are you finished yet?");
}
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Complex if, else Statements
● The if-else statement syntax:
if ( <boolean_expression> )
<statement_or_block>
else
<statement_or_block>
● Example:
if ( x < 10 ) {
System.out.println("Are you finished yet?");
} else {
System.out.println("Keep working...");
}
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Complex if, else Statements
● The if-else-if statement syntax:
if ( <boolean_expression> )
<statement_or_block>
else if ( <boolean_expression> )
<statement_or_block>
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if-else-if statement: Example
● Example:
int count = getCount(); // a method defined in the class
if (count < 0) {
System.out.println("Error: count value is negative.");
} else if (count > getMaxCount()) {
System.out.println("Error: count value is too big.");
} else {
System.out.println("There will be " + count +
" people for lunch today.");
}
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Switch Statements
The switch statement syntax:
switch ( <expression> ) {
case <constant1>:
<statement_or_block>*
[break;]
case <constant2>:
<statement_or_block>*
[break;]
default:
<statement_or_block>*
[break;]
}
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Switch Statement Example
String carModel = ”STANDARD”;
switch ( carModel ) {
case DELUXE:
System.out.println(“DELUXE”);
break;
case STANDARD:
System.out.println(“Standard”);
break;
default:
System.out.println(“Default”);
}
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For Loop Example
for ( int i = 0; i < 10; i++ )
System.out.println(i + " squared is " + (i*i));
or (recommended):
for ( int i = 0; i < 10; i++ ) {
System.out.println(i + " squared is " + (i*i));
}