The document discusses key concepts in Java programming including declaring and initializing arrays, multidimensional arrays, inheritance, polymorphism, overriding methods, and heterogeneous collections. It explains how to create arrays of primitive and reference types, determine an array's length, and copy arrays. Inheritance, polymorphism, and method overriding are demonstrated. The session summary restates the main topics covered.
Mahika Tutorials sharing PPT slide for core java programming language. Go threw this slide and visit our YouTube page too
https://www.youtube.com/c/mahikatutorials
Mahika Tutorials sharing PPT slide for core java programming language. Go threw this slide and visit our YouTube page too
https://www.youtube.com/c/mahikatutorials
Here I discuss about Java programming language and easiest way to solve programming problem. Java basic syntax and their uses are described briefly so that anyone can easily understand within very short time. If anyone follow the slide with proper way,I assure that he or she will find java programming interesting.
This presentation is ideal for a beginner of Java or someone who wants to brush up their Java Knowledge. It's simple to understand and well organized in a way most of the area in core Java has been covered.
Many students reach out to me asking for project ideas they can do as a summer project for learning. Here is an interesting project idea - implement your own java disassembler (and expand it to a VM later).
Here I discuss about Java programming language and easiest way to solve programming problem. Java basic syntax and their uses are described briefly so that anyone can easily understand within very short time. If anyone follow the slide with proper way,I assure that he or she will find java programming interesting.
This presentation is ideal for a beginner of Java or someone who wants to brush up their Java Knowledge. It's simple to understand and well organized in a way most of the area in core Java has been covered.
Many students reach out to me asking for project ideas they can do as a summer project for learning. Here is an interesting project idea - implement your own java disassembler (and expand it to a VM later).
Traveling within the shoulder season or off-season, once a country’s weather may be colder, is also a good way to save cash. If wheather condition travel is inevitable, what does one pack?
WHAT WORKS FOR ONE PERSON, DOESN’T NECESSARILY WORK FOR ALL.
MEDICAL AESTHETICS IS NO EXCEPTION.
SPORTS AND EXERCISE IS NO EXCEPTION.
We are all different, both physically and genetically, and we are different in the way that we respond to aging, skincare and exercise. Some of these differences are due to our lifestyle and the environment we live in, but recent scientific advances have shown that VARIATIONS IN OUR DNA ALSO HAVE A BIG PART TO PLAY.
Although you can’t change your genetics, science now has proven you can dramatically change how your genes affect your skin.
Your DNA determines when you start showing signs of aging
how quickly and at what rate your concerns could worsen,
which is unique to you.
Genetics creates a new class of ANTI-AGING technology.
The luxury of a customized ANTI-AGING professional treatment PROGRAM made specifically for you.
Suisse Life Science use natively genetics and a report in order to provide you a DNA-personalized treatment.
NO MORE GUESSWORK, no more buying products that feel like they might help.
There is no one size fits all for our customers.
We replaced anti-aging guesswork with GENETICALLY-DESIGNED cosmeceuticals OTC (over-the-counter) and nutricosmetics supplements.
DNAge is scientifically-created to CALCULATE YOUR GENE-EXPRESSION AGE (younger or older than your birth-certificate age?)
www.idna.works
Systematic (non-random) error that results in an incorrect estimate of the association between exposure and risk of disease.
Can occur in all stages of a study
Not affected by study sample size
Difficult to adjust for afterwards, but can be reduced by adequate study design.
•Can never be totally avoided, but we must be aware of it and interpret our results accordingly
Basic java important interview questions and answers to secure a jobGaruda Trainings
P2Cinfotech is one of the leading, Online IT Training facilities and Job Consultant, spread all over the world. We have successfully conducted online classes on various Software Technologies that are currently in Demand. To name a few, we provide quality online training for QA, QTP, Manual Testing, HP LoadRunner, BA, Java Technologies, SEO, Web Technologies, .NET, Oracle DBA etc.
Core Java Programming Language (JSE) : Chapter V - ArraysWebStackAcademy
Arrays are used to store multiple values in a single variable, instead of declaring separate variables for each value.
To declare an array, define the variable type with square brackets.
Here we are going to take a look how to use for loop, foreach loop and while loop. Also we are going to learn how to use and invoke methods and how to define classes in Java programming language.
oops concept in java | object oriented programming in javaCPD INDIA
object oriented programming is a key concept for the development of application in windows as well as web based application environment. oops concept maps real world through its concept of classes, objects, inheritance, polymorphism which help in making a robust application.
Java basic part 2 : Datatypes Keywords Features Components Security Exceptions Soumen Santra
Features
JVM
Architecture
Security
Data Types
Class and Object
Program
First Java Application
Declaring and creating objects
Arrays
Constructors
this keyword
static keyword
Inheritance
Overriding
Access Modifiers
super keyword
final keyword
abstract classes
interfaces
Exceptions (error handling)
User Defining exceptions
Climate Impact of Software Testing at Nordic Testing DaysKari Kakkonen
My slides at Nordic Testing Days 6.6.2024
Climate impact / sustainability of software testing discussed on the talk. ICT and testing must carry their part of global responsibility to help with the climat warming. We can minimize the carbon footprint but we can also have a carbon handprint, a positive impact on the climate. Quality characteristics can be added with sustainability, and then measured continuously. Test environments can be used less, and in smaller scale and on demand. Test techniques can be used in optimizing or minimizing number of tests. Test automation can be used to speed up testing.
UiPath Test Automation using UiPath Test Suite series, part 5DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
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:
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdfMalak Abu Hammad
Discover how MongoDB Atlas and vector search technology can revolutionize your application's search capabilities. This comprehensive presentation covers:
* What is Vector Search?
* Importance and benefits of vector search
* Practical use cases across various industries
* Step-by-step implementation guide
* Live demos with code snippets
* Enhancing LLM capabilities with vector search
* Best practices and optimization strategies
Perfect for developers, AI enthusiasts, and tech leaders. Learn how to leverage MongoDB Atlas to deliver highly relevant, context-aware search results, transforming your data retrieval process. Stay ahead in tech innovation and maximize the potential of your applications.
#MongoDB #VectorSearch #AI #SemanticSearch #TechInnovation #DataScience #LLM #MachineLearning #SearchTechnology
Full-RAG: A modern architecture for hyper-personalizationZilliz
Mike Del Balso, CEO & Co-Founder at Tecton, presents "Full RAG," a novel approach to AI recommendation systems, aiming to push beyond the limitations of traditional models through a deep integration of contextual insights and real-time data, leveraging the Retrieval-Augmented Generation architecture. This talk will outline Full RAG's potential to significantly enhance personalization, address engineering challenges such as data management and model training, and introduce data enrichment with reranking as a key solution. Attendees will gain crucial insights into the importance of hyperpersonalization in AI, the capabilities of Full RAG for advanced personalization, and strategies for managing complex data integrations for deploying cutting-edge AI solutions.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
GridMate - End to end testing is a critical piece to ensure quality and avoid...ThomasParaiso2
End to end testing is a critical piece to ensure quality and avoid regressions. In this session, we share our journey building an E2E testing pipeline for GridMate components (LWC and Aura) using Cypress, JSForce, FakerJS…
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.
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.
Enchancing adoption of Open Source Libraries. A case study on Albumentations.AIVladimir Iglovikov, Ph.D.
Presented by Vladimir Iglovikov:
- https://www.linkedin.com/in/iglovikov/
- https://x.com/viglovikov
- https://www.instagram.com/ternaus/
This presentation delves into the journey of Albumentations.ai, a highly successful open-source library for data augmentation.
Created out of a necessity for superior performance in Kaggle competitions, Albumentations has grown to become a widely used tool among data scientists and machine learning practitioners.
This case study covers various aspects, including:
People: The contributors and community that have supported Albumentations.
Metrics: The success indicators such as downloads, daily active users, GitHub stars, and financial contributions.
Challenges: The hurdles in monetizing open-source projects and measuring user engagement.
Development Practices: Best practices for creating, maintaining, and scaling open-source libraries, including code hygiene, CI/CD, and fast iteration.
Community Building: Strategies for making adoption easy, iterating quickly, and fostering a vibrant, engaged community.
Marketing: Both online and offline marketing tactics, focusing on real, impactful interactions and collaborations.
Mental Health: Maintaining balance and not feeling pressured by user demands.
Key insights include the importance of automation, making the adoption process seamless, and leveraging offline interactions for marketing. The presentation also emphasizes the need for continuous small improvements and building a friendly, inclusive community that contributes to the project's growth.
Vladimir Iglovikov brings his extensive experience as a Kaggle Grandmaster, ex-Staff ML Engineer at Lyft, sharing valuable lessons and practical advice for anyone looking to enhance the adoption of their open-source projects.
Explore more about Albumentations and join the community at:
GitHub: https://github.com/albumentations-team/albumentations
Website: https://albumentations.ai/
LinkedIn: https://www.linkedin.com/company/100504475
Twitter: https://x.com/albumentations
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.
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.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
Removing Uninteresting Bytes in Software FuzzingAftab Hussain
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
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.
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
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.
National Security Agency - NSA mobile device best practices
Java session04
1. Java Programming Language
Objectives
In this session, you will learn to:
Declare and create arrays of primitive, class, or array types
Explain how to initialize the elements of an array
Determine the number of elements in an array
Create a multidimensional array
Write code to copy array values from one array to another
Define inheritance, polymorphism, overloading, overriding, and
virtual method invocation
Define heterogeneous collections
Ver. 1.0 Session 4 Slide 1 of 26
2. Java Programming Language
Arrays
Declaring Arrays:
Group data objects of the same type.
An array is an object.
Declare arrays of primitive or class types:
• char s[ ];
• Point p[ ];
• char[ ] s;
• Point[ ] p;
– The declaration of an array creates space for a reference.
– Actual memory allocation is done dynamically either by a new
statement or by an array initializer.
Ver. 1.0 Session 4 Slide 2 of 26
3. Java Programming Language
Creating Arrays
In order to create an array object:
– Use the new keyword
– An example to create and initialize a primitive (char) array:
public char[] createArray()
{
char[] s;
s = new char[26];
for ( int i=0; i<26; i++ )
{
s[i] = (char) (’A’ + i);
}
return s;
}
Ver. 1.0 Session 4 Slide 3 of 26
5. Java Programming Language
Creating Reference Arrays
The following code snippet creates an array of 10
references of type Point:
public Point[] createArray()
{
Point[] p;
p = new Point[10];
for ( int i=0; i<10; i++ )
{
p[i] = new Point(i, i+1);
}
return p;
}
Ver. 1.0 Session 4 Slide 5 of 26
6. Java Programming Language
Creating Reference Arrays (Contd.)
Creating an Array of Character Primitives with Point
Objects:
Ver. 1.0 Session 4 Slide 6 of 26
7. Java Programming Language
Demonstration
Lets see how to declare, create, and manipulate an array of
reference type elements.
Ver. 1.0 Session 4 Slide 7 of 26
8. Java Programming Language
Multidimensional Arrays
A Multidimensional array is an array of arrays.
For example:
int [] [] twoDim = new int [4] [];
twoDim[0] = new int [5];
twoDim[1] = new int[5];
– The first call to new creates an object, an array that contains
four elements. Each element is a null reference to an element
of type array of int.
– Each element must be initialized separately so that each
element points to its array.
Ver. 1.0 Session 4 Slide 8 of 26
9. Java Programming Language
Array Bounds
• All array subscripts begin at 0.
• The number of elements in an array is stored as part of the
array object in the length attribute.
• The following code uses the length attribute to iterate on
an array:
public void printElements(int[] list)
{
for (int i = 0; i < list.length; i++)
{
System.out.println(list[i]);
}
}
Ver. 1.0 Session 4 Slide 9 of 26
10. Java Programming Language
The Enhanced for Loop
• Java 2 Platform, Standard Edition (J2SE™) version 5.0 has
introduced an enhanced for loop for iterating over arrays:
public void printElements(int[] list)
{
for ( int element : list )
{
System.out.println(element);
}
}
– The for loop can be read as for each element in list do.
Ver. 1.0 Session 4 Slide 10 of 26
11. Java Programming Language
Array Resizing
You cannot resize an array.
You can use the same reference variable to refer to an
entirely new array, such as:
int[] myArray = new int[6];
myArray = new int[10];
In the preceding case, the first array is effectively lost unless
another reference to it is retained elsewhere.
Ver. 1.0 Session 4 Slide 11 of 26
12. Java Programming Language
Copying Arrays
• The Java programming language provides a special method
in the System class, arraycopy(), to copy arrays.
For example:
int myarray[] = {1,2,3,4,5,6}; // original array
int hold[] = {10,9,8,7,6,5,4,3,2,1}; // new
larger array
System.arraycopy(myarray,0,hold,0,
myarray.length); // copy all of the myarray array to
the hold array, starting with the 0th index
– The contents of the array hold will be : 1,2,3,4,5,6,4,3,2,1.
– The System.arraycopy() method copies references, not
objects, when dealing with array of objects.
Ver. 1.0 Session 4 Slide 12 of 26
13. Java Programming Language
Inheritance
Inheritance means that a class derives a set of attributes
and related behavior from a parent class.
Benefits of Inheritance:
Reduces redundancy in code
Code can be easily maintained
Extends the functionality of an existing class
Ver. 1.0 Session 4 Slide 13 of 26
14. Java Programming Language
Inheritance (Contd.)
Single Inheritance
The subclasses are derived from one super class.
An example of single inheritance is as follows:
Ver. 1.0 Session 4 Slide 14 of 26
15. Java Programming Language
Inheritance (Contd.)
Java does not support multiple inheritance.
Interfaces provide the benefits of multiple inheritance
without drawbacks.
Syntax of a Java class in order to implement inheritance is
as follows:
<modifier> class <name> [extends
superclass>]
{ <declaration>* }
Ver. 1.0 Session 4 Slide 15 of 26
16. Java Programming Language
Access Control
Variables and methods can be at one of the following four
access levels:
public
protected
default
private
Classes can be at the public or default levels.
The default accessibility (if not specified explicitly), is
package-friendly or package-private.
Ver. 1.0 Session 4 Slide 16 of 26
17. Java Programming Language
Overriding Methods
A subclass can modify behavior inherited from a parent
class.
Overridden methods cannot be less accessible.
A subclass can create a method with different functionality
than the parent’s method but with the same:
Name
Return type
Argument list
Ver. 1.0 Session 4 Slide 17 of 26
18. Java Programming Language
Overriding Methods (Contd.)
• A subclass method may invoke a superclass method using
the super keyword:
– The keyword super is used in a class to refer to its
superclass.
– The keyword super is used to refer to the members of
superclass, both data attributes and methods.
– Behavior invoked does not have to be in the superclass; it can
be further up in the hierarchy.
Ver. 1.0 Session 4 Slide 18 of 26
19. Java Programming Language
Overriding Methods (Contd.)
• Invoking Overridden Methods using super keyword:
public class Employee
{
private String name;
private double salary;
private Date birthDate;
public String getDetails()
{
return "Name: " + name +
"nSalary: “ + salary;
}
}
Ver. 1.0 Session 4 Slide 19 of 26
20. Java Programming Language
Overriding Methods (Contd.)
public class Manager extends Employee
{
private String department;
public String getDetails() {
// call parent method
return super.getDetails()
+ “nDepartment: " + department;
}
}
Ver. 1.0 Session 4 Slide 20 of 26
22. Java Programming Language
Polymorphism
Polymorphism is the ability to have many different forms;
for example, the Manager class has access to methods
from Employee class.
An object has only one form.
A reference variable can refer to objects of different forms.
Java programming language permits you to refer to an object
with a variable of one of the parent class types.
For example:
Employee e = new Manager(); // legal
Ver. 1.0 Session 4 Slide 22 of 26
23. Java Programming Language
Virtual Method Invocation
Virtual method invocation is performed as follows:
Employee e = new Manager();
e.getDetails();
Compile-time type and runtime type invocations have the
following characteristics:
The method name must be a member of the declared variable
type; in this case Employee has a method called getDetails.
The method implementation used is based on the runtime object’s
type; in this case the Manager class has an implementation of the
getDetails method.
Ver. 1.0 Session 4 Slide 23 of 26
24. Java Programming Language
Heterogeneous Collections
Heterogeneous Collections:
Collections of objects with the same class type are called
homogeneous collections. For example:
MyDate[] dates = new MyDate[2];
dates[0] = new MyDate(22, 12, 1964);
dates[1] = new MyDate(22, 7, 1964);
Collections of objects with different class types are called
heterogeneous collections. For example:
Employee [] staff = new Employee[1024];
staff[0] = new Manager();
staff[1] = new Employee();
staff[2] = new Engineer();
Ver. 1.0 Session 4 Slide 24 of 26
25. Java Programming Language
Summary
In this session, you learned that:
– Arrays are objects used to group data objects of the same
type. Arrays can be of primitive or class type.
– Arrays can be created by using the keyword new.
– A multidimensional array is an array of arrays.
– All array indices begin at 0. The number of elements in an
array is stored as part of the array object in the length
attribute.
– An array once created can not be resized. However the same
reference variable can be used to refer to an entirely new
array.
– The Java programming language permits a class to extend one
other class i.e, single inheritance.
Ver. 1.0 Session 4 Slide 25 of 26
26. Java Programming Language
Summary (Contd.)
Variables and methods can be at one of the four access levels:
public, protected, default, or private.
Classes can be at the public or default level.
The existing behavior of a base class can be modified by
overriding the methods of the base class.
A subclass method may invoke a superclass method using the
super keyword.
Polymorphism is the ability to have many different forms; for
example, the Manager class (derived) has the access to
methods from Employee class (base).
Collections of objects with different class types are called
heterogeneous collections.
Ver. 1.0 Session 4 Slide 26 of 26