⚠️Java Exceptions Programs

Catches an ArrayIndexOutOfBoundsException from accessing an invalid array index.

Demonstrates the core try-catch mechanism with a manually thrown exception.

Demonstrates a built-in checked exception the compiler forces you to handle.

Catches a ClassCastException from casting an object to an incompatible type.

Shows that a finally block still runs even when the try block returns early.

Catches an ArithmeticException from integer division.

Catches an InputMismatchException from reading the wrong type with Scanner.

Catches two different exception types from one try block, each with its own catch clause.

Catches a NullPointerException from calling a method on a null reference.

Catches a NumberFormatException from parsing a non-numeric string.

Uses the throw statement to raise an exception when a precondition fails.

Demonstrates a built-in unchecked exception thrown to reject invalid input.

Defines and throws a user-defined exception class.

Catches a failure fully inside a method and returns a safe default instead of letting it escape.

Catches a specific exception through a reference to one of its ancestor classes.

Lets an exception travel up through several method calls before anything catches it.

Catches the exception thrown when opening a file that doesn't exist.

Catches an I/O failure at the general IOException level instead of a specific subtype.

Handles two different exception types with a single catch clause.

Handles a narrow failure with an inner try-catch while an outer try-catch guards a broader operation.

Catches an exception, reacts to it locally, then throws the same exception again for a caller further up to also handle.

Declares a checked exception on a method signature and lets the caller handle it.

Automatically closes a custom resource using try-with-resources syntax.