This document discusses exception handling in Java. It explains that exceptions are runtime errors that occur due to design or coding errors. The try-catch block is used to handle exceptions. Code that may cause an exception is placed in the try block, and corresponding catch blocks handle specific exception types. Standard Java exceptions extend the Throwable class. Exceptions can be caught, thrown, or passed up the call stack. Examples demonstrate catching exceptions like DivideByZeroException using try-catch.
The document discusses exception handling in Java. It introduces exceptions as conditions caused by runtime errors and how exception handling helps detect and report these "exceptional circumstances." It explains the types of errors like runtime, logic, and syntax errors. It provides examples of exception handling using try-catch blocks to handle exceptions locally or declaring throws to pass exceptions to other methods. Finally, it discusses standard Java exceptions and provides code examples demonstrating exception handling.
This document discusses exception handling in Java. It defines exceptions as runtime errors that occur when unexpected conditions arise in a program. It describes different types of errors like runtime, logic, and syntax errors. It then explains how to handle exceptions through try-catch blocks and throwing exceptions. It provides examples of handling exceptions like dividing by zero to demonstrate these concepts.
The document discusses exception handling in Java. It defines exceptions as problems that disrupt normal program flow. Exceptions can be caused by invalid user input, file errors, or other issues. Java exceptions are categorized as checked, unchecked, or errors. Checked exceptions must be caught or declared, while unchecked exceptions and errors typically are not. The try-catch block allows catching and handling exceptions. The catch block contains code to handle exceptions thrown in the try block. Exception handling allows programs to continue running after exceptions rather than crashing.
Exception handling in Java allows programs to deal with errors and unexpected conditions gracefully. The try block encloses code that might throw exceptions. When an exception is thrown, the runtime system searches the call stack for a catch block that can handle the exception. The finally block always executes after the try and catch blocks complete to ensure cleanup code runs. Custom exceptions can be created by extending the Exception class.
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.
Exceptions are events that disrupt normal program flow, such as invalid user input or file access errors. Errors are problems beyond the programmer's control. Exceptions can be checked, which must be caught, or runtime, which can be ignored. The try block contains exception-prone code, catch handles specific exception types, and finally ensures cleanup. Common exceptions include NullPointerException and ArrayIndexOutOfBoundsException. Exception handling separates error handling from regular code and groups error types for easier management.
An exception occurs when the normal flow of a program is disrupted, such as dividing by zero or accessing an out-of-bounds array element. Exceptions are handled using try-catch blocks to catch specific exceptions or finally blocks to clean up resources. Methods can throw exceptions using the throw statement or specify thrown exceptions in the method declaration using throws. Programmers can also create custom exception classes by extending the Exception class.
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
This document discusses exception handling in Java. It defines errors and exceptions, and describes different types of exceptions like compile-time errors, runtime errors, checked exceptions and unchecked exceptions. It explains the steps in exception handling using try, catch, throw and throws keywords. Examples of different exceptions like ArithmeticException, NullPointerException, ArrayIndexOutOfBoundsException are provided. Finally, it covers exception handling mechanisms like multiple catch blocks, nested try blocks, and user-defined exceptions.
This document discusses exceptions in Java programs. It defines exceptions as runtime errors that occur when an unexpected condition arises. It describes different types of errors like runtime errors, logic errors, and syntax errors. It provides an example Java program that generates an exception by dividing a number by zero. Finally, it explains Java's exception handling mechanisms like try, catch, throw, throws and finally keywords to detect and manage exceptions.
This document discusses exception handling in Java. It defines exceptions as errors that occur during runtime and explains how Java uses try, catch, throw, throws and finally keywords to handle exceptions. try blocks contain code that can throw exceptions. catch blocks catch specific exception types. throw manually throws exceptions. throws declares which exceptions a method can throw. finally ensures code is always executed after a try block. The document provides examples of handling different exception types, nested try blocks, and rethrowing exceptions.
This document discusses exception handling in Java. It defines exceptions as abnormal conditions that disrupt normal program flow. Exception handling allows programs to continue running after exceptions rather than terminating. Key points:
- Exceptions are represented by objects in Java that describe errors.
- try-catch blocks allow handling exceptions within the catch block instead of terminating. finally blocks always execute regardless of exceptions.
- Checked exceptions must be caught or declared to be thrown; unchecked exceptions like NullPointerException represent programmer errors.
- Exceptions propagate up the call stack until caught unless declared as thrown. Exception handling prevents program termination due to errors.
Ch-1_5.pdf this is java tutorials for allHayomeTakele
The document discusses exception handling in Java. It defines exceptions as abnormal conditions that occur during runtime and disrupt normal program flow. It describes different types of exceptions like checked, unchecked, and errors. It explains concepts like exception handling syntax using try, catch, finally blocks to maintain program flow. It provides examples to demonstrate exception handling and resolving exceptions in catch blocks.
Java exceptions allow programs to handle and recover from errors and unexpected conditions. There are two main types of exceptions - checked exceptions which must be declared, and unchecked exceptions which do not need to be declared. The try-catch block is used to handle exceptions, with catch blocks specifying code to handle specific exception types. Finally blocks ensure code is always executed after a try-catch block completes. Common built-in exceptions include NullPointerException, ArrayIndexOutOfBoundsException, and ArithmeticException.
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.
The document discusses exception handling in Java. It defines exceptions as problems that disrupt normal program flow. Exceptions can be caused by invalid user input, file errors, or other issues. Java exceptions are categorized as checked, unchecked, or errors. Checked exceptions must be caught or declared, while unchecked exceptions and errors typically are not. The try-catch block allows catching and handling exceptions. The catch block contains code to handle exceptions thrown in the try block. Exception handling allows programs to continue running after exceptions rather than crashing.
Exception handling in Java allows programs to deal with errors and unexpected conditions gracefully. The try block encloses code that might throw exceptions. When an exception is thrown, the runtime system searches the call stack for a catch block that can handle the exception. The finally block always executes after the try and catch blocks complete to ensure cleanup code runs. Custom exceptions can be created by extending the Exception class.
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.
Exceptions are events that disrupt normal program flow, such as invalid user input or file access errors. Errors are problems beyond the programmer's control. Exceptions can be checked, which must be caught, or runtime, which can be ignored. The try block contains exception-prone code, catch handles specific exception types, and finally ensures cleanup. Common exceptions include NullPointerException and ArrayIndexOutOfBoundsException. Exception handling separates error handling from regular code and groups error types for easier management.
An exception occurs when the normal flow of a program is disrupted, such as dividing by zero or accessing an out-of-bounds array element. Exceptions are handled using try-catch blocks to catch specific exceptions or finally blocks to clean up resources. Methods can throw exceptions using the throw statement or specify thrown exceptions in the method declaration using throws. Programmers can also create custom exception classes by extending the Exception class.
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
This document discusses exception handling in Java. It defines errors and exceptions, and describes different types of exceptions like compile-time errors, runtime errors, checked exceptions and unchecked exceptions. It explains the steps in exception handling using try, catch, throw and throws keywords. Examples of different exceptions like ArithmeticException, NullPointerException, ArrayIndexOutOfBoundsException are provided. Finally, it covers exception handling mechanisms like multiple catch blocks, nested try blocks, and user-defined exceptions.
This document discusses exceptions in Java programs. It defines exceptions as runtime errors that occur when an unexpected condition arises. It describes different types of errors like runtime errors, logic errors, and syntax errors. It provides an example Java program that generates an exception by dividing a number by zero. Finally, it explains Java's exception handling mechanisms like try, catch, throw, throws and finally keywords to detect and manage exceptions.
This document discusses exception handling in Java. It defines exceptions as errors that occur during runtime and explains how Java uses try, catch, throw, throws and finally keywords to handle exceptions. try blocks contain code that can throw exceptions. catch blocks catch specific exception types. throw manually throws exceptions. throws declares which exceptions a method can throw. finally ensures code is always executed after a try block. The document provides examples of handling different exception types, nested try blocks, and rethrowing exceptions.
This document discusses exception handling in Java. It defines exceptions as abnormal conditions that disrupt normal program flow. Exception handling allows programs to continue running after exceptions rather than terminating. Key points:
- Exceptions are represented by objects in Java that describe errors.
- try-catch blocks allow handling exceptions within the catch block instead of terminating. finally blocks always execute regardless of exceptions.
- Checked exceptions must be caught or declared to be thrown; unchecked exceptions like NullPointerException represent programmer errors.
- Exceptions propagate up the call stack until caught unless declared as thrown. Exception handling prevents program termination due to errors.
Ch-1_5.pdf this is java tutorials for allHayomeTakele
The document discusses exception handling in Java. It defines exceptions as abnormal conditions that occur during runtime and disrupt normal program flow. It describes different types of exceptions like checked, unchecked, and errors. It explains concepts like exception handling syntax using try, catch, finally blocks to maintain program flow. It provides examples to demonstrate exception handling and resolving exceptions in catch blocks.
Java exceptions allow programs to handle and recover from errors and unexpected conditions. There are two main types of exceptions - checked exceptions which must be declared, and unchecked exceptions which do not need to be declared. The try-catch block is used to handle exceptions, with catch blocks specifying code to handle specific exception types. Finally blocks ensure code is always executed after a try-catch block completes. Common built-in exceptions include NullPointerException, ArrayIndexOutOfBoundsException, and ArithmeticException.
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.
This presentation was provided by Nicole 'Nici" Pfeiffer of the Center for Open Science (COS), during the first session of our 2025 NISO training series "Secrets to Changing Behavior in Scholarly Communications." Session One was held June 5, 2025.
How to Configure Vendor Management in Lunch App of Odoo 18Celine George
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HOW YOU DOIN'?
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THE QUIZ CLUB OF PSGCAS.
Artificial intelligence Presented by JM.jmansha170
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Exploring Ocean Floor Features for Middle SchoolMarie
This 16 slide science reader is all about ocean floor features. It was made to use with middle school students.
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Human Anatomy and Physiology II Unit 3 B pharm Sem 2
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Anatomy of respiratory system with special reference to anatomy
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Anatomy of urinary tract with special reference to anatomy of
kidney and nephrons, functions of kidney and urinary tract,
physiology of urine formation, micturition reflex and role of
kidneys in acid base balance, role of RAS in kidney and
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exception-handling-in-java programming.ppt
1. Exception Handling in Java
Explained By:
Sarbjit Kaur.
Lecturer, Department of Computer Application,
PGG.C.G., Sector: 42, Chandigarh
2. Objectives
• Introduction
• What exceptions are for
• Catching & Throwing exceptions
• Exception Specifications
• Standard Java Exceptions
• Exceptions and Polymorphism
• The finally clause
• Resource Management
• Uncaught Exceptions
3. Introduction
What is Exception ?
Due to design errors or coding errors, our programs
may fail in unexpected ways during execution.
An exception is a condition that is caused by run
time error in the program.
The purpose of the exception handling mechanism
is to provide a means to detect and report an
“ecxceptional circumstances” .
4. Error
• An error may produce an incorrect output or
may terminate the execution of the program
abruptly or even may cause the system to
crash. So it is our responsibility to detect and
manage the error properly.
5. Types of error
• Runtime Errors: occur while the program is
running if the environment detects an
operation that is impossible to carry out.
• Logic Errors: occur when a program doesn't
perform the way it was intended
• Syntax Errors: Arise because the rules of the
language have not been followed. They are
detected by the compiler.
6. Example of Run Time error
Class Error
{
public static void main(String args[])
{
int a=10;
int b=5;
int c=5;
int x=a/(b+c);
System.out.println("x=" +x);
int y=a/(b-c); // Errorr division by zero
System.out.println("y=" +y);
}
}
7. Errors and Error Handling
• Some typical causes of errors:
– Memory errors (i.e. memory incorrectly allocated,
memory leaks, “null pointer”)
– File system errors (i.e. disk is full, disk has been
removed)
– Network errors (i.e. network is down, URL does
not exist)
– Calculation errors (i.e. divide by 0)
8. Errors and Error Handling
• More typical causes of errors:
– Array errors (i.e. accessing element –1)
– Conversion errors (i.e. convert ‘q’ to a number)
– Can you think of some others?
9. Errors and Error Handling
• Exceptions – a better error handling
– Exceptions act similar to method return flags in
that any method may raise and exception should
it encounter an error.
– exceptions are handled at many levels in a
program, locally and/or globally.
10. Exceptions
• How do you handle exceptions?
– To handle the exception, you write a “try-catch”
block. To pass the exception “up the chain”, you
declare a throws clause in your method or class
declaration.
– If the method contains code that may cause a
checked exception, you MUST handle the
exception OR pass the exception to the parent
class (remember, every class has Object as the
ultimate parent)
11. Coding Exceptions
• Coding Exceptions
• Try-Catch Mechanism
– Wherever your code may trigger an exception, the
normal code logic is placed inside a block of code
starting with the “try” keyword:
– After the try block, the code to handle the
exception should it arise is placed in a block of
code starting with the “catch” keyword.
13. Catching Exceptions
• Wrap code to be checked in a try-block
– checking occurs all the way down the execution
stack
• try-blocks can be nested
– control resumes at most enclosed matching
handler
16. Code Examples
• 1. Demonstration of an unchecked exception
(NullPointerException)
• 2. Demonstration of checked exceptions:
– Passing a DivideByZeroException
– Handling a DivideByZeroException
17. Example
class error2
{
public static void main(String arg[])
{
int a=10;
int b=5;
int c=5;
int x,y;
try
{
x=a/(b-c);
}
catch(ArithmeticException e)
{
System.out.println(“Division by Zero”);
}
Y=a/(b-c);
System.out.println(“y=“+y);
}
}
18. In the previous program we cannot see the
value of x just because of the error in the
value of y, that is division by zero but when
we use the try and catch blocks in exception
handling then we can see the value of y which
is correct and our program will display an
error message shown in the try block.
19. conclusion
– Exceptions are a powerful error handling
mechanism.
– Exceptions in Java are built into the language.
– Exceptions can be handled by the programmer
(try-catch), or handled by the Java environment
(throws).
– Exception handling can only hide the errors.
– It cannot correct the errors.
![Example of Run Time error
Class Error
{
public static void main(String args[])
{
int a=10;
int b=5;
int c=5;
int x=a/(b+c);
System.out.println("x=" +x);
int y=a/(b-c); // Errorr division by zero
System.out.println("y=" +y);
}
}](https://image.slidesharecdn.com/exception-handling-in-java-250116024613-40459bba/85/exception-handling-in-java-programming-ppt-6-320.jpg)
![Example
class error2
{
public static void main(String arg[])
{
int a=10;
int b=5;
int c=5;
int x,y;
try
{
x=a/(b-c);
}
catch(ArithmeticException e)
{
System.out.println(“Division by Zero”);
}
Y=a/(b-c);
System.out.println(“y=“+y);
}
}](https://image.slidesharecdn.com/exception-handling-in-java-250116024613-40459bba/85/exception-handling-in-java-programming-ppt-17-320.jpg)
