Here are the key differences:
Reserved words: These are words that have special meaning in Java like class, public, etc. They cannot be used as regular identifiers.
Modifiers: Modifiers like public, private, static etc. specify attributes of classes, methods and variables.
Package: A package is a namespace that organizes related classes and interfaces. It provides access protection.
Libraries: Libraries are pre-compiled classes that provide useful functionality that can be included in programs using import statements.
JVM version: The Java Virtual Machine version specifies the Java runtime environment. Programs need to be compatible with the JVM version.
JVM: The Java Virtual Machine is an abstract computing machine that
In this core java training session, you will learn Elements of Java programming. Topics covered in this session are:
• Quick review of some important concepts from last class
• History of Java
• JDK and JRE
• Byte Code and JVM (Java Virtual Machine)
• Platform Independence
• Principles of Object Oriented Programming
• Writing your first Java Application
• Elements of Java programming language
• Built in Data Types
• Conditional Statements
• Loops
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/
In this core java training session, you will learn Elements of Java programming. Topics covered in this session are:
• Quick review of some important concepts from last class
• History of Java
• JDK and JRE
• Byte Code and JVM (Java Virtual Machine)
• Platform Independence
• Principles of Object Oriented Programming
• Writing your first Java Application
• Elements of Java programming language
• Built in Data Types
• Conditional Statements
• Loops
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/
Levelwise PageRank with Loop-Based Dead End Handling Strategy : SHORT REPORT ...Subhajit Sahu
Abstract — Levelwise PageRank is an alternative method of PageRank computation which decomposes the input graph into a directed acyclic block-graph of strongly connected components, and processes them in topological order, one level at a time. This enables calculation for ranks in a distributed fashion without per-iteration communication, unlike the standard method where all vertices are processed in each iteration. It however comes with a precondition of the absence of dead ends in the input graph. Here, the native non-distributed performance of Levelwise PageRank was compared against Monolithic PageRank on a CPU as well as a GPU. To ensure a fair comparison, Monolithic PageRank was also performed on a graph where vertices were split by components. Results indicate that Levelwise PageRank is about as fast as Monolithic PageRank on the CPU, but quite a bit slower on the GPU. Slowdown on the GPU is likely caused by a large submission of small workloads, and expected to be non-issue when the computation is performed on massive graphs.
As Europe's leading economic powerhouse and the fourth-largest hashtag#economy globally, Germany stands at the forefront of innovation and industrial might. Renowned for its precision engineering and high-tech sectors, Germany's economic structure is heavily supported by a robust service industry, accounting for approximately 68% of its GDP. This economic clout and strategic geopolitical stance position Germany as a focal point in the global cyber threat landscape.
In the face of escalating global tensions, particularly those emanating from geopolitical disputes with nations like hashtag#Russia and hashtag#China, hashtag#Germany has witnessed a significant uptick in targeted cyber operations. Our analysis indicates a marked increase in hashtag#cyberattack sophistication aimed at critical infrastructure and key industrial sectors. These attacks range from ransomware campaigns to hashtag#AdvancedPersistentThreats (hashtag#APTs), threatening national security and business integrity.
🔑 Key findings include:
🔍 Increased frequency and complexity of cyber threats.
🔍 Escalation of state-sponsored and criminally motivated cyber operations.
🔍 Active dark web exchanges of malicious tools and tactics.
Our comprehensive report delves into these challenges, using a blend of open-source and proprietary data collection techniques. By monitoring activity on critical networks and analyzing attack patterns, our team provides a detailed overview of the threats facing German entities.
This report aims to equip stakeholders across public and private sectors with the knowledge to enhance their defensive strategies, reduce exposure to cyber risks, and reinforce Germany's resilience against cyber threats.
StarCompliance is a leading firm specializing in the recovery of stolen cryptocurrency. Our comprehensive services are designed to assist individuals and organizations in navigating the complex process of fraud reporting, investigation, and fund recovery. We combine cutting-edge technology with expert legal support to provide a robust solution for victims of crypto theft.
Our Services Include:
Reporting to Tracking Authorities:
We immediately notify all relevant centralized exchanges (CEX), decentralized exchanges (DEX), and wallet providers about the stolen cryptocurrency. This ensures that the stolen assets are flagged as scam transactions, making it impossible for the thief to use them.
Assistance with Filing Police Reports:
We guide you through the process of filing a valid police report. Our support team provides detailed instructions on which police department to contact and helps you complete the necessary paperwork within the critical 72-hour window.
Launching the Refund Process:
Our team of experienced lawyers can initiate lawsuits on your behalf and represent you in various jurisdictions around the world. They work diligently to recover your stolen funds and ensure that justice is served.
At StarCompliance, we understand the urgency and stress involved in dealing with cryptocurrency theft. Our dedicated team works quickly and efficiently to provide you with the support and expertise needed to recover your assets. Trust us to be your partner in navigating the complexities of the crypto world and safeguarding your investments.
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Empowering the Data Analytics Ecosystem: A Laser Focus on Value
The data analytics ecosystem thrives when every component functions at its peak, unlocking the true potential of data. Here's a laser focus on key areas for an empowered ecosystem:
1. Democratize Access, Not Data:
Granular Access Controls: Provide users with self-service tools tailored to their specific needs, preventing data overload and misuse.
Data Catalogs: Implement robust data catalogs for easy discovery and understanding of available data sources.
2. Foster Collaboration with Clear Roles:
Data Mesh Architecture: Break down data silos by creating a distributed data ownership model with clear ownership and responsibilities.
Collaborative Workspaces: Utilize interactive platforms where data scientists, analysts, and domain experts can work seamlessly together.
3. Leverage Advanced Analytics Strategically:
AI-powered Automation: Automate repetitive tasks like data cleaning and feature engineering, freeing up data talent for higher-level analysis.
Right-Tool Selection: Strategically choose the most effective advanced analytics techniques (e.g., AI, ML) based on specific business problems.
4. Prioritize Data Quality with Automation:
Automated Data Validation: Implement automated data quality checks to identify and rectify errors at the source, minimizing downstream issues.
Data Lineage Tracking: Track the flow of data throughout the ecosystem, ensuring transparency and facilitating root cause analysis for errors.
5. Cultivate a Data-Driven Mindset:
Metrics-Driven Performance Management: Align KPIs and performance metrics with data-driven insights to ensure actionable decision making.
Data Storytelling Workshops: Equip stakeholders with the skills to translate complex data findings into compelling narratives that drive action.
Benefits of a Precise Ecosystem:
Sharpened Focus: Precise access and clear roles ensure everyone works with the most relevant data, maximizing efficiency.
Actionable Insights: Strategic analytics and automated quality checks lead to more reliable and actionable data insights.
Continuous Improvement: Data-driven performance management fosters a culture of learning and continuous improvement.
Sustainable Growth: Empowered by data, organizations can make informed decisions to drive sustainable growth and innovation.
By focusing on these precise actions, organizations can create an empowered data analytics ecosystem that delivers real value by driving data-driven decisions and maximizing the return on their data investment.
Opendatabay - Open Data Marketplace.pptxOpendatabay
Opendatabay.com unlocks the power of data for everyone. Open Data Marketplace fosters a collaborative hub for data enthusiasts to explore, share, and contribute to a vast collection of datasets.
First ever open hub for data enthusiasts to collaborate and innovate. A platform to explore, share, and contribute to a vast collection of datasets. Through robust quality control and innovative technologies like blockchain verification, opendatabay ensures the authenticity and reliability of datasets, empowering users to make data-driven decisions with confidence. Leverage cutting-edge AI technologies to enhance the data exploration, analysis, and discovery experience.
From intelligent search and recommendations to automated data productisation and quotation, Opendatabay AI-driven features streamline the data workflow. Finding the data you need shouldn't be a complex. Opendatabay simplifies the data acquisition process with an intuitive interface and robust search tools. Effortlessly explore, discover, and access the data you need, allowing you to focus on extracting valuable insights. Opendatabay breaks new ground with a dedicated, AI-generated, synthetic datasets.
Leverage these privacy-preserving datasets for training and testing AI models without compromising sensitive information. Opendatabay prioritizes transparency by providing detailed metadata, provenance information, and usage guidelines for each dataset, ensuring users have a comprehensive understanding of the data they're working with. By leveraging a powerful combination of distributed ledger technology and rigorous third-party audits Opendatabay ensures the authenticity and reliability of every dataset. Security is at the core of Opendatabay. Marketplace implements stringent security measures, including encryption, access controls, and regular vulnerability assessments, to safeguard your data and protect your privacy.
2. History
• In 1991, Java was developed by a team led by James Gosling and
Sun Microsystems for use in embedded chips.
• Sun microsystems was purchased by oracle (Oak) in 2010.
• Java, May 20, 1995, Sun World, redesigned for web applications.
• HotJava ( first Java-enabled Web browser )
5. Features of Java
• Java is simple
• Java is object-oriented
• Java is distributed
• Java is interpreted
• Java is robust
• Java is secure
• Java is portable
• Java’s performance
• Java is multithreaded
• Java has garbage
Collector
6. Java Features (1)
Simple
• fixes some clumsy features of C++
• no pointers
• automatic garbage collection
• rich pre-defined class library
Object oriented
• focus on the data (objects) and methods manipulating the data
• all functions are associated with objects
• almost all data types are objects (files, strings, etc.)
• potentially better code organization and reuse
7. Java Features (2)
Interpreted
• java compiler generate byte-codes, not native machine code
• the compiled byte-codes are platform-independent
• java bytecodes are translated on the fly to machine readable
instructions in runtime (Java Virtual Machine)
Portable
• same application runs on all platforms
• the sizes of the primitive data types are always the same
8. Java Features (3)
Reliable
• extensive compile-time and runtime error checking
• no pointers. Memory corruptions or unauthorized memory
accesses are impossible
• automatic garbage collection tracks objects usage over time
Secure
• usage in networked environments requires more security
• memory allocation model is a major defense
• access restrictions are forced (private, public)
9. Java Features (4)
Multithreaded
• multiple concurrent threads of executions can run
simultaneously
• utilizes a sophisticated set of synchronization primitives (based
on monitors and condition variables paradigm) to achieve this
10. Java Disadvantages
Slower than compiled language such as C
• an experiment in 1999 showed that Java was 3 or 4 times slower than C or C++
• title of the article: “Comparing Java vs. C/C++ Efficiency Issues to Interpersonal
Issues” (Lutz Prechelt)
• adequate for all but the most time-intensive programs
11. JDK Editions
• Java Standard Edition (J2SE)
J2SE can be used to develop client-side standalone applications or
applets.
• Java Enterprise Edition (J2EE)
J2EE can be used to develop server-side applications such as Java
servlets and Java ServerPages.
• Java Micro Edition (J2ME).
J2ME can be used to develop applications for mobile devices such as
cell phones.
12. Java Applet
• Java programs can be run from a Web browser. Such programs are
called applets. Applets employ a modern graphical interface with
buttons, text fields, text areas, radio buttons, and so on, to interact
with users on the Web and process their requests.
• You can use a Java development tool (e.g., NetBeans, Eclipse, and
Text Pad)—software that provides an integrated development
environment (IDE) for developing Java programs quickly.
14. Creating..Compiling .. Executing
Source Code
Create/Modify Source
Code
Bytecode
Run Byteode
i.e. java Welcome
Result
Compile Source Code
i.e. javac Welcome.java
If compilation errors
If runtime errors or
incorrect result
Java
Interpreter
on Windows
Java
Interpreter
on Sun Solaris
Java
Interpreter
on Linux
Bytecode
...
16. 1. // Your First Program
2. class HelloWorld
{
3. public static void
main(String[] args)
{
4.
System.out.println("Hello
, World!");
}
}
In line 1; In Java, any line starting
with // is a comment
In line 2; in the program, HelloWorld is
the name of the class, and the class
definition is: class helloworld
In line 3; This is the main method.
Every application in Java must contain
the main method. The Java compiler
starts executing the code from the
main method.
In line 4; The code above is a print
statement. It prints the text Hello,
World! to standard output (your
screen). The text inside the quotation
marks is called String in Java.
17. Anatomy of a Java Program
Comments:
In Java, comments are preceded by two slashes (//) in a line, or enclosed between
/* and */ in one or multiple lines. When the compiler sees //, it ignores all text after
// in the same line. When it sees /*, it scans for the next */ and ignores any text
between /* and */.
Package :
The second line in the program (package javaapplication1;) specifies a package
name, javaapplication1, for the class javaapplication1. It compiles the source code
in javaapplication1.java, generates javaapplication1.class, and stores
javaapplication1.class in the javaapplication1 folder.
18. Anatomy of a Java Program
Reserved words:
Reserved words or keywords are words that have a specific meaning to the
compiler and cannot be used for other purposes in the program. For example, when
the compiler sees the word class, it understands that the word after class is the
name for the class. Other reserved words are public, static, and voidetc.
Modifiers:
Java uses certain reserved words called modifiers that specify the properties of the
data, methods, and classes and how they can be used. Examples of modifiers are
public and static. Other modifiers are private, final, abstract, and protected. A
public datum, method, or class can be accessed by other programs through reserve
words
CE&ME, NUST
19. Anatomy of a Java Program
Statements:
A statement represents an action or a sequence of actions. The statement
System.out.println(“Hello Java world!") in the program in Example is a statement
to display the greeting " Hello Java world! “. Every statement in Java ends with a
semicolon (;).
Blocks:
A pair of braces in a program forms a block that groups components of aprogram.
public class JavaApplication1 {
public static void main(String[] args) {
System.out.println("Hello Java World !");
}
}
Class block
Meth
CE&ME, NUST
od block
The code above is a print statement. It prints the text Hello, World! to standard output (your screen). The text inside the quotation marks is called String in Java.
// This is a comment
System.out.println("Hello World");
/* The code below will print the words Hello World
to the screen, and it is amazing */
System.out.println("Hello World");