The document discusses arrays in Java. Some key points:
- Arrays allow storing multiple values of the same type together and accessing using an index.
- One-dimensional arrays store elements in a list. Two-dimensional arrays represent tables/matrices.
- Arrays are initialized with a size, then individual elements can be assigned and accessed using indexes.
- Methods demonstrate declaring, initializing, and manipulating values in one and two-dimensional arrays. Arrays can also be passed as arguments or returned from methods.
What is an Array?
Array are the homogeneous(similar) collection of data types.
Array Size remains same once created.
Simple Declaration format for creating an array
type [ ] identifier = new type [integral value];
An Introduction to Programming in Java: ArraysMartin Chapman
An Introduction to Programming in Java: Arrays. Last delivered in 2012. All educational material listed or linked to on these pages in relation to King's College London may be provided for reference only, and therefore does not necessarily reflect the current course content.
What is an Array?
Array are the homogeneous(similar) collection of data types.
Array Size remains same once created.
Simple Declaration format for creating an array
type [ ] identifier = new type [integral value];
An Introduction to Programming in Java: ArraysMartin Chapman
An Introduction to Programming in Java: Arrays. Last delivered in 2012. All educational material listed or linked to on these pages in relation to King's College London may be provided for reference only, and therefore does not necessarily reflect the current course content.
Learn about how to define and invoke methods in Java, how to use parameters and return results. Watch the video lesson here:
https://softuni.org/code-lessons/java-foundations-certification-methods
Collections and its types in C# (with examples)Aijaz Ali Abro
Learn step by step c# collections with easy examples. Learn generic, non-generic and specialized collections along with easy and great examples. Learn about arraylist, queue class,stack class and more. Difference between generic and non-generic collections. Difference between arraylist and simple array.
Swing is a GUI widget toolkit for Java. It is part of Oracle's Java Foundation Classes (JFC) – an API for providing a graphical user interface (GUI) for Java programs.
Inheritance is the capability of a class to use the properties and methods of another class while adding its own functionality.
Enables you to add new features and functionality to an existing class without modifying the existing class.
Provides basic file and directory support classes
Contains types that enable you to read and write files and data streams
Many of the types or classes defined as part of the System.IO namespace are designed around streams
Learn about how to define and invoke methods in Java, how to use parameters and return results. Watch the video lesson here:
https://softuni.org/code-lessons/java-foundations-certification-methods
Collections and its types in C# (with examples)Aijaz Ali Abro
Learn step by step c# collections with easy examples. Learn generic, non-generic and specialized collections along with easy and great examples. Learn about arraylist, queue class,stack class and more. Difference between generic and non-generic collections. Difference between arraylist and simple array.
Swing is a GUI widget toolkit for Java. It is part of Oracle's Java Foundation Classes (JFC) – an API for providing a graphical user interface (GUI) for Java programs.
Inheritance is the capability of a class to use the properties and methods of another class while adding its own functionality.
Enables you to add new features and functionality to an existing class without modifying the existing class.
Provides basic file and directory support classes
Contains types that enable you to read and write files and data streams
Many of the types or classes defined as part of the System.IO namespace are designed around streams
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
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.
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.
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.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
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.
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.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
2. Array
• Definition:
An array is a group/collection of variables of the
same type that are referred to by a common name.
• Arrays of any type can be created and may have one
or more dimensions.
• A specific element in an array is accessed by its index
(subscript).
• Examples:
• Collection of numbers
• Collection of names
• Collection of suffixes
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
3. Array of numbers:
Array of names:
Array of suffixes:
Examples
10 23 863 8 229
ment tion ness ves
Sam Shanu Riya
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
4. One-Dimensional Arrays
• A one-dimensional array is a list of variables of same
type.
• The general form of a one-dimensional array
declaration is:
type var-name[ ]; array-var = new type[size];
or, type var-name[ ] = new type[size];
Example:
int num [] = new int [10];
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
5. Declaration of array variable:
data-type variable-name[];
eg. int marks[];
This will declare an array named ‘marks’ of type ‘int’. But no memory is
allocated to the array.
Allocation of memory:
variable-name = new data-type[size];
eg. marks = new int[5];
This will allocate memory of 5 integers to the array ‘marks’ and it can store upto
5 integers in it. ‘new’ is a special operator that allocates memory.
Syntax
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
6. Accessing elements in the array:
• Specific element in the array is accessed by specifying
name of the array followed the index of the element.
• All array indexes in Java start at zero.
variable-name[index] = value;
Example:
marks[0] = 10;
This will assign the value 10 to the 1st element in the array.
marks[2] = 863;;
This will assign the value 863 to the 3rd element in the array.
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
7. STEP 1 : (Declaration)
int marks[];
marks null
STEP 2: (Memory Allocation)
marks = new int[5];
marks
marks[0] marks[1] marks[2] marks[3] marks[4]
STEP 3: (Accessing Elements)
marks[0] = 10;
marks
marks[0] marks[1] marks[2] marks[3] marks[4]
Example
0 0 0 0 0
10 0 0 0 0
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
8. • Size of an array can’t be changed after the array is created.
• Default values:
– zero (0) for numeric data types,
– u0000 for chars and
– false for boolean types
• Length of an array can be obtained as:
array_ref_var.length
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
9. Example
class Demo_Array
{
public static void main(String args[])
{
int marks[];
marks = new int[3];
marks[0] = 10;
marks[1] = 35;
marks[2] = 84;
System.out.println(“Marks of 2nd student=” + marks[1]);
}
}
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
10. • Arrays can store elements of the same data type. Hence an
int array CAN NOT store an element which is not an int.
• Though an element of a compatible type can be converted
to int and stored into the int array.
eg. marks[2] = (int) 22.5;
This will convert ‘22.5’ into the int part ‘22’ and store it into the 3rd place
in the int array ‘marks’.
• Array indexes start from zero. Hence ‘marks[index]’ refers
to the (index+1)th element in the array and ‘marks[size-1]’
refers to last element in the array.
Note
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
11. Array Initialization
1. data Type [] array_ref_var = {value0, value1, …, value n};
2. data Type [] array_ref_var;
array_ref_var = {value0, value1, …,value n};
3. data Type [] array_ref_var = new data Type [n+1];
array_ref_var [0] = value 0;
array_ref_var [1] = value 1;
…
array_ref_var [n] = value n;
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
12. Example
int[] v = new int[10];
int i = 7;
int j = 2;
int k = 4;
v[0] = 1;
v[i] = 5;
v[j] = v[i] + 3;
v[j+1] = v[i] + v[0];
v[v[j]] = 12;
System.out.println(v[2]);
v[k] = stdin.nextInt();
v 00 0 00 0 00 00
v[2]v[0] v[1] v[5]v[3] v[4] v[7]v[6] v[9]v[8]
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
13. Example
int[] v = new int[10];
int i = 7;
int j = 2;
int k = 4;
v[0] = 1;
v[i] = 5;
v[j] = v[i] + 3;
v[j+1] = v[i] + v[0];
v[v[j]] = 12;
System.out.println(v[2]);
v[k] = stdin.nextInt();
v 01 0 00 0 00 00
v[2]v[0] v[1] v[5]v[3] v[4] v[7]v[6] v[9]v[8]
14. Example
int[] v = new int[10];
int i = 7;
int j = 2;
int k = 4;
v[0] = 1;
v[i] = 5;
v[j] = v[i] + 3;
v[j+1] = v[i] + v[0];
v[v[j]] = 12;
System.out.println(v[2]);
v[k] = stdin.nextInt();
v 01 0 00 0 50 00
v[2]v[0] v[1] v[5]v[3] v[4] v[7]v[6] v[9]v[8]
15. Example
int[] v = new int[10];
int i = 7;
int j = 2;
int k = 4;
v[0] = 1;
v[i] = 5;
v[j] = v[i] + 3;
v[j+1] = v[i] + v[0];
v[v[j]] = 12;
System.out.println(v[2]);
v[k] = stdin.nextInt();
v 81 0 00 0 50 00
v[2]v[0] v[1] v[5]v[3] v[4] v[7]v[6] v[9]v[8]
16. Example
int[] v = new int[10];
int i = 7;
int j = 2;
int k = 4;
v[0] = 1;
v[i] = 5;
v[j] = v[i] + 3;
v[j+1] = v[i] + v[0];
v[v[j]] = 12;
System.out.println(v[2]);
v[k] = stdin.nextInt();
v 81 0 06 0 50 00
v[2]v[0] v[1] v[5]v[3] v[4] v[7]v[6] v[9]v[8]
17. Example
int[] v = new int[10];
int i = 7;
int j = 2;
int k = 4;
v[0] = 1;
v[i] = 5;
v[j] = v[i] + 3;
v[j+1] = v[i] + v[0];
v[v[j]] = 12;
System.out.println(v[2]);
v[k] = stdin.nextInt();
v 81 0 06 0 50 012
v[2]v[0] v[1] v[5]v[3] v[4] v[7]v[6] v[9]v[8]
18. Example
int[] v = new int[10];
int i = 7;
int j = 2;
int k = 4;
v[0] = 1;
v[i] = 5;
v[j] = v[i] + 3;
v[j+1] = v[i] + v[0];
v[v[j]] = 12;
System.out.println(v[2]);
v[k] = stdin.nextInt();
v 81 0 06 0 50 012
v[2]v[0] v[1] v[5]v[3] v[4] v[7]v[6] v[9]v[8]
8 is displayed
19. Example
int[] v = new int[10];
int i = 7;
int j = 2;
int k = 4;
v[0] = 1;
v[i] = 5;
v[j] = v[i] + 3;
v[j+1] = v[i] + v[0];
v[v[j]] = 12;
System.out.println(v[2]);
v[k] = stdin.nextInt();
v 81 0 06 3 50 012
v[2]v[0] v[1] v[5]v[3] v[4] v[7]v[6] v[9]v[8]
Suppose 3 is extracted
20. Multi-Dimensional Array
• Multidimensional arrays are arrays of arrays.
• Two-Dimensional arrays are used to represent a table or a
matrix.
• Creating Two-Dimensional Array:
int twoD[][] = new int[4][5];
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
21. Conceptual View of 2-Dimensional Array
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
22. class TwoDimArr
{
public static void main(String args[])
{
int twoD[][]= new int[4][5];
int i, j, k = 0;
for(i=0; i<4; i++)
for(j=0; j<5; j++)
{
twoD[i][j] = k;
k++;
}
for(i=0; i<4; i++)
{
for(j=0; j<5; j++)
System.out.print(twoD[i][j] + " ");
System.out.println();
}
}
}
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
23. • When we allocate memory for a multidimensional
array, we need to only specify the memory for the
first (leftmost) dimension.
int twoD[][] = new int[4][];
• The other dimensions can be assigned manually.
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
24. // Manually allocate differing size second dimensions.
class TwoDAgain {
public static void main(String args[]) {
int twoD[][] = new int[4][];
twoD[0] = new int[1];
twoD[1] = new int[2];
twoD[2] = new int[3];
twoD[3] = new int[4];
int i, j, k = 0;
for(i=0; i<4; i++)
for(j=0; j<i+1; j++)
{
twoD[i][j] = k;
k++;
}
for(i=0; i<4; i++) {
for(j=0; j<i+1; j++)
System.out.print(twoD[i][j] + " ");
System.out.println();
}
}
}Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
26. Alternative Array Declaration
type[ ] var-name;
• Example:
char twod1[][] = new char[3][4];
char[][] twod2 = new char[3][4];
• This alternative declaration form offers convenience
when declaring several arrays at the same time.
• Example: int[] nums, nums2, nums3;
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
27. Array Cloning
• To actually create another array with its own values,
Java provides the clone()method.
• arr2 = arr1; (assignment)
is not equivalent to
arr2 = arr1.clone(); (cloning)
Example: ArrayCloning.java
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
28. Array as Argument
• Arrays can be passed as an argument to any method.
Example:
void show ( int []) {}
public static void main(String arr[]) {}
void compareArray(int [] a, int [] b ){}
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)
29. Array as a return Type
• Arrays can also be returned as the return type of any
method
Example:
public int [] Result (int roll_No, int marks )
Ravi Kant Sahu, Asst. Professor @ Lovely Professional University, Punjab (India)