Risky Behaviour — Chapter 11

  1. an Exception is a type of a class that enables you to create objects ( from the inheritance tree)
  2. An exception unless called, is always thrown back to the caller
  3. The compiler checks for everything except RuntimeExceptions — The compiler guarantees: If you throw an exception in your code you must declare it using the throws keyword in your method declaration.
  4. If you call a method that throws an exception (in other words, a method that declares It throws an exception), you must acknowledge that you’re aware of the exception possibility. One way to satisfy the compiler is to wrap the call in a try/catch.
  5. A method can throw an exception when something fails at runtime.
  6. The compiler does NOT pay attention to exceptions that are of type RuntimeException. A RuntimeException does not have to be declared or wrapped in a try/catch (although you’re free todo either or both of those things)
  7. All Exceptions the compiler cares about are called ‘checked exceptions’
  8. Either handle or declare an exception.

try-catch block

A finally block is where you put code that must run regardless of an exception.



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Upulie Handalage

Upulie Handalage

Everything in my point of view. Here for you to read on....