Exceptional Java

Custom Exceptions = Allow developers to represent application-specific exceptional conditions Exception Propagation = The process by which an exception is thrown from one method to another or from one part of the program to another Exception Chaining = Throwing a new exception within a catch block, often with additional information, while preserving the information about the original exception Checked Exceptions = Exceptions that are checked at compile-time and must be caught or declared in the method's throws clause

IOException = Thrown when an input or output operation fails, such as when working with files or network connections NullPointerException = Thrown when trying to access an object or invoke a method on a null reference OutOfMemoryError = Thrown when the Java Virtual Machine (JVM) runs out of memory StackOverflowError = Occurs when the call stack of a thread exceeds the maximum allowed stack size

SQLException = Checked Exception ArrayIndexOutOfBoundsException = Unchecked Exception OutOfMemoryError = Error FileNotFoundException = Checked Exception

throws clause = Achieving exception propagation RuntimeException = Representing programming errors and not checked at compile-time Error = Indicating serious problems that cannot be handled by the application code Throwable class = Superclass of both checked and unchecked exceptions

Java Virtual Machine (JVM) = Where OutOfMemoryError and StackOverflowError occur ArithmeticException = Thrown when an arithmetic operation results in an exceptional condition IllegalArgumentException = Thrown to indicate that a method has been passed an illegal or inappropriate argument NoClassDefFoundError = Indicates that the JVM or the class loader cannot find the definition of a class

Exception Handling = The process of dealing with exceptions during program execution. Throwable = The root class for all exceptions and errors in Java. Checked Exceptions = Exceptions that are checked at compile-time. Unchecked Exceptions = Exceptions that are not checked at compile-time.

Checked Exceptions = IOException and SQLException Unchecked Exceptions = NullPointerException and ArrayIndexOutOfBoundsException Throwable = Both Exception and Error classes extend from Throwable. try-catch Block = A programming construct used to isolate and handle exceptions.

try-catch Block = Isolates and handles exceptions. Throws Clause = Declares the exceptions a method may throw. finally Block = An optional block associated with a try-catch block. Exception Handling = Involves identifying, capturing, and responding to exceptions.