What Are Checked Exception

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Checked exceptions are exceptions that arise in a correct program, typically due

to user mistakes like entering wrong data or I/O problems.

In Java, checked exceptions are exceptions that are checked at compile-time. This means that the compiler enforces certain rules regarding handling these exceptions. If a method can potentially throw a checked exception, the calling method must either catch the exception using a try-catch block or declare that it throws the exception using the throws clause.

Examples of checked exceptions include:

  1. IOException: This exception is thrown when there is an input/output operation failure, such as when working with files.
  2. SQLException: This exception is related to database access and is thrown when there is an issue with database operations.
  3. ClassNotFoundException: This exception is thrown when a class is not found at runtime.

Checked exceptions are subclasses of the Exception class (excluding subclasses of RuntimeException), and they typically represent problems that a program might reasonably be expected to recover from. Handling these exceptions helps in writing robust and reliable code.

In summary, checked exceptions in Java are exceptions that the compiler requires you to handle or declare.