Computer science exception

  • What are exceptions in computer science?

    Definition: An exception is an event, which occurs during the execution of a program, that disrupts the normal flow of the program's instructions.
    When an error occurs within a method, the method creates an object and hands it off to the runtime system..

  • Unchecked Exceptions

    NullPointerException.
    A NullPointerException is thrown when a Java program attempts to process an object which contains a null value. ArrayIndexOutOfBoundsException. IllegalStateException. ClassCastException. ArithmeticException. IllegalArgumentException.
In programming, an exception can be any error condition or unexpected behaviour, such as a division by zero or attempting to open a file that does not exist. These exceptions, if not handled properly, can cause serious issues, including data loss, incorrect calculations, or even a complete system crash.

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