An exception is an error condition or unexpected behavior encountered during program execution. Exceptions are handled using try, catch, and finally blocks. The try block contains code that might throw an exception, the catch block handles the exception if it occurs, and the finally block contains cleanup code that always executes. Common .NET exception classes include ArgumentException, NullReferenceException, and IndexOutOfRangeException. Exceptions provide a standard way to handle runtime errors in programs and allow the programmer to define specific behavior in error cases.
This is the material that I prepared for gathering best practices in exception handling that we aim to follow. I used the content stated in the references section.
This is the material that I prepared for gathering best practices in exception handling that we aim to follow. I used the content stated in the references section.
JAVA EXCEPTION HANDLING
N.V.Raja Sekhar Reddy
www.technolamp.co.in
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An exception is a problem that arises during the time of execution of program. An exception can occur for many different reasons, including the following.
A user has enter invalid data.
A file that needs to be opened cannot be found.
A network connection has been lost in the middle of communicatons,or the JVM has run out of memory.
Some of these exception are caused by user error, others by programmer error, and others by physical resources, that have failed in some manner.
unit 4 msbte syallbus for sem 4 2024-2025AKSHAYBHABAD5
The Intel 8086 microprocessor, designed by Intel in the late 1970s, is an 8-bit/16-bit microprocessor and the first member of the x86 family of microprocessors1. Here’s a brief overview of its internal architecture:
Complex Instruction Set Computer (CISC) Architecture: The 8086 microprocessor is based on a CISC architecture, which supports a wide range of instructions, many of which can perform multiple operations in a single instruction1.
Bus Interface Unit (BIU): The BIU is responsible for fetching instructions from memory and decoding them, while also managing data transfer between the microprocessor and memory or I/O devices1.
Execution Unit (EU): The EU executes the instructions1.
Memory Segmentation: The 8086 microprocessor has a segmented memory architecture, which means that memory is divided into segments that are addressed using both a segment register and an offset1.
Registers: The 8086 microprocessor has a rich set of registers, including general-purpose registers, segment registers, and special registers
JAVA EXCEPTION HANDLING
N.V.Raja Sekhar Reddy
www.technolamp.co.in
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An exception is a problem that arises during the time of execution of program. An exception can occur for many different reasons, including the following.
A user has enter invalid data.
A file that needs to be opened cannot be found.
A network connection has been lost in the middle of communicatons,or the JVM has run out of memory.
Some of these exception are caused by user error, others by programmer error, and others by physical resources, that have failed in some manner.
unit 4 msbte syallbus for sem 4 2024-2025AKSHAYBHABAD5
The Intel 8086 microprocessor, designed by Intel in the late 1970s, is an 8-bit/16-bit microprocessor and the first member of the x86 family of microprocessors1. Here’s a brief overview of its internal architecture:
Complex Instruction Set Computer (CISC) Architecture: The 8086 microprocessor is based on a CISC architecture, which supports a wide range of instructions, many of which can perform multiple operations in a single instruction1.
Bus Interface Unit (BIU): The BIU is responsible for fetching instructions from memory and decoding them, while also managing data transfer between the microprocessor and memory or I/O devices1.
Execution Unit (EU): The EU executes the instructions1.
Memory Segmentation: The 8086 microprocessor has a segmented memory architecture, which means that memory is divided into segments that are addressed using both a segment register and an offset1.
Registers: The 8086 microprocessor has a rich set of registers, including general-purpose registers, segment registers, and special registers
Exceptions are a powerful mechanism for centralized processing of errors and exceptional situations. This mechanism replaces the procedure-oriented method of error handling in which each function returns a code indicating an error or a successful execution.
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.
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.
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
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
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.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
2. WHAT IS AN EXCEPTION?
An exception is an error condition or unexpected behavior encountered by
an executing program during runtime. In fact the name exception comes
from the fact that although a problem can occur; the problem occurs
infrequently.
Trapping and handling of runtime errors is one of the most crucial tasks
ahead of any programmer.As a developer, you sometimes seem to spend
more time checking for errors and handling them than you do on the core
logic of the actual program.You can address this issue by using system
exceptions that are designed for the purpose of handling errors. In this
article, you will learn how to catch and handle exceptions in C#.
3. EXCEPTIONS
o The C# language's exception handling features provide a
way to deal with any unexpected or exceptional situations
that arise while a program is running.
o Exception handling uses the try, catch, and finally
keywords to attempt actions that may not succeed, to
handle failures, and to clean up resources afterwards.
4. EXCEPTIONS
The .NET base class libraries define numerous exceptions such as
o FormatException
o IndexOutOfRangeException
o FileNotFoundException
o ArgumentOutOfRangeException
.NET platform provides a standard technique to
send and trap runtime errors: structured exception handling (SEH).
5. THE ATOMS OF .NET
EXCEPTION HANDLING
o Programming with structured exception handling
o involves the use of four interrelated entities:
o A class type that represents the details of the exception
that occurred
o A member that throws an instance of the exception class to
the caller
o A block of code on the caller’s side that invokes the
exception-prone member
o A block of code on the caller’s side that will process (or
catch) the exception should it occur
6. WHAT ARETHE OTHER
EXCEPTION CLASSES?
Here's a list of few Common Exception Classes:
o System.ArithmeticException-A base class for exceptions that occur during arithmetic
operations, such as System.DivideByZeroException
o System.ArrayTypeMismatchException-Thrown when a store into an array fails because
the actual type of the stored element is incompatible with the actual type of the array.
o System.DivideByZeroException-Thrown when an attempt to divide an integral value by
zero occurs.
o System.IndexOutOfRangeException-Thrown when an attempt to index an array via an
index that is less than zero or outside the bounds of the array.
7. WHAT ARETHE OTHER
EXCEPTION CLASSES?
o System.InvalidCastExceptionThrown when an explicit conversion from a
base type or interface to derived types fails at run time.
o System.MulticastNotSupportedException-Thrown when an attempt to
combine two non-null delegates fails, because the delegate type does not
have a void return type.
o System.NullReferenceException-Thrown when a null reference is used in
a way that causes the referenced object to be required.
o System.OutOfMemoryException-Thrown when an attempt to allocate
memory (via new) fails.
o System.OverflowException-Thrown when an arithmetic operation in a
checked context overflows.
8. EXCEPTIONS OVERVIEW
o When your application encounters an exceptional circumstance, such as a
division by zero or low memory warning, an exception is generated.
o Once an exception occurs, the flow of control immediately jumps to an
associated exception handler, if one is present.
o If no exception handler for a given exception is present, the program stops
executing with an error message.
o Actions that may result in an exception are executed with the try keyword.
o An exception handler is a block of code that is executed when an exception
occurs. In C#, the catch keyword is used to define an exception handler.
o Exceptions can be explicitly generated by a program using the throw keyword.
o Exception objects contain detailed information about the error, including the
state of the call stack and a text description of the error.
o Code in a finally block is executed even if an exception is thrown, thus
allowing a program to release resources.
9. class Program
{
static void Main(string[] args)
{
int[] numbers = new int[2];
numbers[0] = 23;
numbers[1] = 32;
numbers[2] = 42;
foreach(int i in numbers)
Console.WriteLine(i);
Console.ReadLine();
}
}
10. WHAT IS EXCEPTION HANDLING
ANDWHY DOWE NEED IT?
o The mark of a good, robust program is planning for the unexpected,
and recovering if it does happen. Errors can happen at almost any time
during the compilation or execution of a program.
o We can detect and deal with these errors using Exception Handling.
Exception handling is an in built mechanism in .NET framework to
detect and handle run time errors.
o At the heart of the .NET Framework is the Common Language
Runtime (CLR) which in addition to acting as a virtual machine and
interpreting and executing IL code on the fly, performs numerous
other functions such as type safety checking, memory management,
garbage collection and Exception handling.
11. WHAT IS EXCEPTION HANDLING
ANDWHY DOWE NEED IT?
o The .NET framework contains lots of standard exceptions.
It allows you to define how the system reacts in
unexpected situations like 'File not found' , 'Out of
Memory' , bad logic, non-availability of operating system
resources other than memory, 'Index out of bounds' and
so on.
o When the code which has a problem, is executed, it 'raises
an exception'. If a programmer does not provide a
mechanism to handle these anomalies, the .NET run time
environment provides a default mechanism, which
terminates the program execution.This mechanism is a
structured exception handling mechanism.
12. try
{
// this code may cause an exception.
// If it does cause an exception, the execution will not continue.
// Instead,it will jump to the 'catch' block.
}
catch (Exception ex)
{
// I get executed when an exception occurs in the try block.
// Write the error handling code here.
}
13. class Program
{
static void Main(string[] args)
{
int[] numbers = new int[2];
try
{
numbers[0] = 23;
numbers[1] = 32;
numbers[2] = 42;
foreach(int i in numbers)
Console.WriteLine(i);
}
catch
{
Console.WriteLine("Something went wrong!");
}
Console.ReadLine();
}
}
15. o Exception is the most general type of exception.The rules of exception
handling tells us that we should always use the least general type of exception,
and in this case, we actually know the exact type of exception generated by
our code. How? BecauseVisual Studio told us when we didn't handle it. If
you're in doubt, the documentation usually describes which exception(s) a
method may throw.Another way of finding out is using the Exception class to
tell us - change the output line to this:
o Console.WriteLine("An error occured: " + ex.GetType().ToString());
o The result is, as expected, IndexOutOfRangeException.We should therefore handle
this exception, but nothing prevents us from handling more than one exception. In
some situations you might wish to do different things, depending on which exception
was thrown.
17. OK, BUT WHAT ABOUTTHE
FINALLY BLOCK?
o C# provides the finally block to enclose a set of statements that need
to be executed regardless of the course of control flow. So as a result
of normal execution, if the control flow reaches the end of the try
block, the statements of the finally block are executed.
o Moreover, if the control leaves a try block as a result of a throw
statement or a jump statement such as break , continue, or goto, the
statements of the finally block are executed.
o The finally block is basically useful in three situations: to avoid
duplication of statements, to release resources after an exception has
been thrown and to assign a value to an object or display a message
that may be useful to the program.
18. int[] numbers = new int[2];
try
{
numbers[0] = 23;
numbers[1] = 32;
numbers[2] = 42;
foreach(int i in numbers)
Console.WriteLine(i);
}
catch(IndexOutOfRangeException ex)
{
Console.WriteLine("An index was out of range!");
}
catch(Exception ex)
{
Console.WriteLine("Some sort of error occured: " + ex.Message);
}
finally
{
Console.WriteLine("It's the end of our try block.Time to clean up!");
}
Console.ReadLine();
20. COMMON EXCEPTION CLASSES
o Exception Class - - Cause
o SystemException - A failed run-time check;used as a base class for other.
o AccessException - Failure to access a type member, such as a method or field.
o ArgumentException - An argument to a method was invalid.
o ArgumentNullException - A null argument was passed to a method that doesn't accept it.
o ArgumentOutOfRangeException - Argument value is out of range.
o BadImageFormatException - Image is in the wrong format.
o CoreException - Base class for exceptions thrown by the runtime.
o DivideByZeroException - An attempt was made to divide by zero.
o FormatException - The format of an argument is wrong.
o InvalidOperationException - A method was called at an invalid time.
o MissingMemberException - An invalid version of a DLL was accessed.
o NotFiniteNumberException - A number is not valid.
o NotSupportedException - Indicates sthat a method is not implemented by a class.
21. EXCEPTIONS HAVETHE FOLLOWING
PROPERTIES:
o Exceptions are types that all ultimately derive from System.Exception.
o Use a try block around the statements that might throw exceptions.
o Once an exception occurs in the try block, the flow of control jumps to the
first associated exception handler that is present anywhere in the call stack. In
C#, the catch keyword is used to define an exception handler.
o If no exception handler for a given exception is present, the program stops
executing with an error message.
22. EXCEPTIONS HAVETHE FOLLOWING
PROPERTIES:
o Do not catch an exception unless you can handle it and leave the application
in a known state. If you catch System.Exception, rethrow it using the throw
keyword at the end of the catch block.
o If a catch block defines an exception variable, you can use it to obtain more
information about the type of exception that occurred.
o Exceptions can be explicitly generated by a program by using the throw
keyword.
o Exception objects contain detailed information about the error, such as the
state of the call stack and a text description of the error.
o Code in a finally block is executed even if an exception is thrown. Use a
finally block to release resources, for example to close any streams or files
that were opened in the try block.