Debugging and Exception Handling in Java

Debugging

Process of identifying and fixing program errors.

Error Symptoms

Indicators like crashes or unexpected behaviors.

Root Cause

Underlying issue causing the error in code.

Fixing the Error

Making changes to resolve identified issues.

Understanding the Problem

Fully grasping the issue before modifying code.

Backtracking

Working backward from the problem's origin.

Debugging Tools

Software aiding in code analysis and error detection.

Breakpoints

Code points to temporarily halt execution for inspection.

Stepping

Manually moving through code line by line.

Binary Search

Dividing code to systematically locate bugs.

Rubber Ducking

Explaining problems to clarify thoughts and find solutions.

Log Analysis

Using logs to track code execution and variable states.

Clustering Bugs

Grouping similar error reports for efficient resolution.

Take Breaks

Stepping away to refresh mind during debugging.

Chrome DevTools

A debugging tool for web development.

Testsigma

Testing tool for automated software testing.

dbForge

Database management and development tool.

Error Messages

Notifications indicating issues in code execution.

Code Execution Flow

Sequence of operations performed by the code.

Variable States

Values held by variables at specific execution points.

Complex Issues

Difficult problems requiring advanced debugging techniques.

Exception

Unexpected error condition in programming.

Runtime Error

Error occurring during program execution.

Syntax Error

Error discovered during program compilation.

Error Class

Serious errors that programs cannot recover from.

Exception Class

Less serious errors that programs can recover from.

Throwable Class

Superclass for all errors and exceptions in Java.

IOException

Base class for file access exceptions.

RuntimeException

Detected only during application execution.

ArithmeticException

Raised for incorrect mathematical operations at runtime.

IndexOutOfBoundsException

Thrown for invalid array, list, or string indices.

ArrayIndexOutOfBoundsException

Accessing array with illegal negative or oversized index.

NoSuchElementException

Requested element does not exist.

InputMismatchException

User input type or range is incorrect.

VirtualMachineError

Indicates Java Virtual Machine resource issues.

OutOfMemoryError

Insufficient space to allocate an object.

InternalError

Unexpected internal error in Java Virtual Machine.

Debugging

Documenting processes for future error resolution.

Command to Read File

Attempting to access a non-existent file.

Disk Full Error

Attempting to write to a full disk.

Invalid User Input

User inputs data type not expected.

Division by Zero

Attempting to divide a value by zero.

Division Class

Java class that performs division of two integers.

main() Method

Entry point of a Java program.

ArithmeticException

Error when dividing by zero in Java.

InputMismatchException

Error when input type does not match expected type.

Stack Trace

List of method calls during program execution.

try Block

Code segment where exceptions may occur.

catch Block

Code segment that handles exceptions thrown.

throw Statement

Sends an exception object for handling.

Scanner Class

Java class for obtaining user input.

Numerator

The dividend in a division operation.

Denominator

The divisor in a division operation.

Executable Statements

Code that can be executed in Java.

Curly Braces

Used to define blocks of code in Java.

Exception Object

An object representing an error condition.

Error Condition

A situation that disrupts normal program execution.

Exception Type

Classification of exceptions in Java.

Instance Identifier

Variable name for a caught exception.

Program Execution

The process of running a Java program.

User Input

Data provided by the user during execution.

Non-integer Data

Input that is not an integer value.

Floating-point Value

A number with decimal points.

Crash

Premature termination of a program due to errors.

Error Handling

Managing errors to maintain program stability.

try block

Code section that attempts to execute statements.

catch block

Handles exceptions thrown by the try block.

Exception class

Base class for all exceptions in Java.

ArithmeticException

Exception for invalid arithmetic operations, like division by zero.

finally block

Executes code regardless of exception occurrence.

try...catch structure

Combines try and catch for error handling.

valid denominator

Non-zero integer used in division operations.

invalid denominator

Zero value causing division errors.

method abandonment

Termination of method execution due to exceptions.

numerator

Top number in a division operation.

denominator

Bottom number in a division operation.

result variable

Stores the outcome of division operation.

exception handling

Mechanism to manage runtime errors in Java.

IOException

Exception for input/output operation failures.

cleanup tasks

Actions performed to free resources after execution.

pseudocode

High-level description of programming logic.

exception message

Information displayed when an exception occurs.

control flow

Order of execution in a program.

Java identifier

Name used to identify variables, methods, etc.

try...catch...finally sequence

Structure ensuring execution of cleanup code.

exception object

Instance representing an error condition.

program termination

End of program execution, successful or not.

error message

Feedback displayed to inform users of issues.