This document provides an overview of key Java programming concepts including casting objects, overloading methods and constructors, wrapper classes, autoboxing, and using static variables and methods. Specifically, it discusses casting objects to access subclass functionality, defining methods with the same name but different parameters, using variable arguments, invoking parent class constructors, the equals() and toString() methods of the Object class, boxing and unboxing primitive types, and declaring static class members.
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.
Core Java Tutorial. In case you want to get trained in Spring Framework you can refer here:
<a href="https://www.emexotechnologies.com/courses/java-development-training/core-java-training/">Java Training</a>
Core Java Developer Certification helps demonstrate an individual's overall comprehension and expertise of Java programming language. VSkills Core Java Developer Certification holders have more than a working familiarity with Java programs—they are technically skilled to take advantage of the breadth of features efficiently and effectively.
http://www.vskills.in/certification/Certified-Core-Java-Developer
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.
Core Java Tutorial. In case you want to get trained in Spring Framework you can refer here:
<a href="https://www.emexotechnologies.com/courses/java-development-training/core-java-training/">Java Training</a>
Core Java Developer Certification helps demonstrate an individual's overall comprehension and expertise of Java programming language. VSkills Core Java Developer Certification holders have more than a working familiarity with Java programs—they are technically skilled to take advantage of the breadth of features efficiently and effectively.
http://www.vskills.in/certification/Certified-Core-Java-Developer
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
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.
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.
Pushing the limits of ePRTC: 100ns holdover for 100 daysAdtran
At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
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.
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
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
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.
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.
UiPath Test Automation using UiPath Test Suite series, part 6DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
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.
Building RAG with self-deployed Milvus vector database and Snowpark Container...Zilliz
This talk will give hands-on advice on building RAG applications with an open-source Milvus database deployed as a docker container. We will also introduce the integration of Milvus with Snowpark Container Services.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Securing your Kubernetes cluster_ a step-by-step guide to success !
Java session05
1. Java Programming Language
Objectives
In this session, you will learn to:
Understand the use of casting objects
Describe overloading methods and methods with variable
arguments
Describe overloading constructors and invoking parent class
constructors
Understand Wrapper classes
Understand autoboxing of primitive types
Create static variables, methods, and initializers
Ver. 1.0 Session 5 Slide 1 of 22
2. Java Programming Language
Casting Objects
Casting objects is used where you have received a
reference to a parent class, and you want to access the full
functionality of the object of the subclass:
– Use instanceof to test the type of an object.
– Restore full functionality of an object by casting.
– Check for proper casting using the following guidelines:
Casts upward in the hierarchy are done implicitly.
Downward casts must be to a subclass and checked by the
compiler.
The object type is checked at runtime when runtime errors can
occur.
Ver. 1.0 Session 5 Slide 2 of 22
3. Java Programming Language
Overloading Methods
The methods which perform closely related tasks can be
given the same name by overloading them.
Overloading can be used as follows:
public void println(int i)
public void println(float f)
public void println(String s)
Argument list must differ across various methods.
Return types can be different.
Ver. 1.0 Session 5 Slide 3 of 22
4. Java Programming Language
Methods Using Variable Arguments
• The varargs or variable arguments is a feature provided
by J2SE 5.0.
• It helps to pass variable number of arguments, of the same
type, as parameters, to a method.
• It can be used when you have a number of overloaded
methods, which share the same functionality.
Ver. 1.0 Session 5 Slide 4 of 22
5. Java Programming Language
Methods Using Variable Arguments (Contd.)
• The following example demonstrates the usage of
varargs:
public class Statistics {
public float average(int... nums) {
int sum = 0;
for ( int x : nums ) { nums is an array
of type int[]
sum += x;
}
return ((float) sum) / nums.length;
}
}
We can invoke the average method by passing any number
of arguments as integers.
Ver. 1.0 Session 5 Slide 5 of 22
6. Java Programming Language
Overloading Constructor
As with methods, constructors can be overloaded:
An example is:
public Employee(String name, double
salary,Date doB)
public Employee(String name, double salary)
public Employee(String name, Date DoB)
Argument lists must differ.
You can use the this reference at the first line of a constructor
to call another constructor.
Ver. 1.0 Session 5 Slide 6 of 22
7. Java Programming Language
Overloading Constructor (Contd.)
Example of overloading constructors:
public class Employee {
private static final double BASE_SALARY =
15000.00;
private String name;
private double salary;
private Date birthDate;
public Employee(String name, double
salary, Date DoB) {
this.name = name;
Initializes all
this.salary = salary; instance
this.birthDate = DoB; variables
}
Ver. 1.0 Session 5 Slide 7 of 22
8. Java Programming Language
Overloading Constructor (Contd.)
public Employee(String name, double
salary) {
used as a forwarding call
this(name, salary, null); to the first constructor
}
public Employee(String name, Date DoB) {
this(name, BASE_SALARY, DoB);
}
// more Employee code...
calls the first constructor
}
passing in the class
constant BASE_SALARY
– The this keyword in a constructor must be the first line of
code in the constructor.
Ver. 1.0 Session 5 Slide 8 of 22
9. Java Programming Language
Constructors Are Not Inherited
A subclass inherits all methods and variables from the
superclass (parent class).
A subclass does not inherit the constructor from the
superclass.
Two ways to include a constructor are:
Use the default constructor
Write one or more explicit constructors
Ver. 1.0 Session 5 Slide 9 of 22
10. Java Programming Language
Invoking Parent Class Constructors
• To invoke a parent class constructor, you must place a call
to super() in the first line of the constructor.
• You can call a specific parent constructor by the arguments
that you use in the call to super().
• If the parent class defines constructors, but does not
provide a no-argument constructor, then a compiler error
message is issued.
Ver. 1.0 Session 5 Slide 10 of 22
11. Java Programming Language
Invoking Parent Class Constructors (Contd.)
An example of invoking parent class constructor:
public class Manager extends Employee {
private String department;
public Manager(String name, double salary,
String dept)
{
super(name, salary);
department = dept;
}
public Manager(String name, String dept)
{
super(name);
department = dept; }
Ver. 1.0 Session 5 Slide 11 of 22
12. Java Programming Language
Invoking Parent Class Constructors (Contd.)
public Manager(String dept)
{
// This code fails: no super()
department = dept;
}
//more Manager code...
}
Ver. 1.0 Session 5 Slide 12 of 22
13. Java Programming Language
The Object Class
• The Object class is the root of all classes in Java.
• A class declaration with no extends clause implies extends
Object. For example:
public class Employee
{
...
}
is equivalent to:
public class Employee extends Object
{
...
}
Two important methods of object class are:
equals()
toString()
Ver. 1.0 Session 5 Slide 13 of 22
14. Java Programming Language
The equals Method
• The == operator determines if two references are identical
to each other (that is, refer to the same object).
• The equals() method determines if objects are equal but
not necessarily identical.
• The Object implementation of the equals() method uses
the == operator.
• User classes can override the equals method to implement
a domain-specific test for equality.
Note: You should override the hashCode method if you
override the equals method.
Ver. 1.0 Session 5 Slide 14 of 22
15. Java Programming Language
The toString Method
• The toString() method has the following characteristics:
– This method converts an object to a String.
– Use this method during string concatenation.
– Override this method to provide information about a
user-defined object in readable format.
– Use the wrapper class’s toString() static method to
convert primitive types to a String.
Ver. 1.0 Session 5 Slide 15 of 22
16. Java Programming Language
Wrapper Classes
• The Java programming language provides wrapper
classes to manipulate primitive data elements as objects.
• Each Java primitive data type has a corresponding wrapper
class in the java.lang package.
• Example of Primitive Boxing using wrapper classes:
int pInt = 420;
Integer wInt = new Integer(pInt);
// this is called boxing
int p2 = wInt.intValue();
// this is called unboxing
Ver. 1.0 Session 5 Slide 16 of 22
17. Java Programming Language
Autoboxing of Primitive Types
The autoboxing feature enables you to assign and retrieve
primitive types without the need of the wrapper classes.
Example of Primitive Autoboxing:
int pInt = 420;
Integer wInt = pInt; // this is called autoboxing
int p2 = wInt; // this is called autounboxing
The J2SE 5.0 compiler will create the wrapper object
automatically when assigning a primitive to a variable of the
wrapper class type.
The compiler will also extract the primitive value when
assigning from a wrapper object to a primitive variable.
Ver. 1.0 Session 5 Slide 17 of 22
18. Java Programming Language
The static Keyword
• The static keyword is used as a modifier on variables,
methods, and nested classes.
• The static keyword declares the attribute or method is
associated with the class as a whole rather than any
particular instance of that class.
• Thus,static members are often called class members, such
as class attributes or class methods.
Ver. 1.0 Session 5 Slide 18 of 22
19. Java Programming Language
The static Keyword (Contd.)
Static Attribute:
A public static class attribute can be accessed from outside the
class without an instance of the class.
Static Method:
A static method can be invoked without creating the instance of
the class.
Static methods can not access instance variables.
Static Initializers:
– A class can contain code in a static block that does not exist
within a method body.
– Static block code executes once only, when the class is
loaded.
– Usually, a static block is used to initialize static (class)
attributes.
Ver. 1.0 Session 5 Slide 19 of 22
20. Java Programming Language
Demonstration
Let see how to declare static members in a class, including
both member variables and methods.
Ver. 1.0 Session 5 Slide 20 of 22
21. Java Programming Language
Summary
In this session, you learned that:
– Casting objects is used where you have received a reference
to a parent class, and you want to access the full functionality
of the object of the subclass.
– The methods which perform closely related tasks can be given
the same name by overloading them.
– The varargs feature helps us to write a generic code to pass
variable number of arguments, of the same type to a method.
– The super keyword is used to call the constructor of the
parent class.
– The object class is the root of all classes. The two important
methods of the object class are equals() method and
tostring() method.
Ver. 1.0 Session 5 Slide 21 of 22
22. Java Programming Language
Summary (Contd.)
– Wrapper classes are used to manipulate primitive data
elements as objects. Each Java primitive data type has a
corresponding wrapper class in the java.lang package.
– Autoboxing feature of J2SE 5.0 enables you to assign and
retrieve primitive types without the need of the wrapper
classes.
– The static keyword declares members (attributes, methods,
and nested classes) that are associated with the class rather
than the instances of the class.
Ver. 1.0 Session 5 Slide 22 of 22