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What else can I help you with?
Does it matter in what order catch statements for FileNotFoundException and IOException are written?
Yes, it does. The child exceptions classes must always be caught first and the "Exception" class should be caught last
Describe the JAVA throwable class hierarchy and types of exceptions?
In Java there are two main types of Exceptions. * Checked Exceptions - The ones that can be checked & handled in our code. Ex: I/O Exception, SQL Exception etc. In most cases, the compiler itself forces us to catch & handle these exceptions * Un-checked Exceptions - The ones that we cannot & should not handle in our code. Ex. Null Pointer Exception The java.lang.Throwable is the super class of all errors and exceptions in Java. Only objects of this class can be thrown & caught and handled by try-catch blocks. Ex: try { ..... ..... } catch (Exception e){ ... } finally { ... }
What is defferred exceptional handling?
Deferred exception handling refers to a programming design pattern where individual class level methods do not handle exceptions using try catch blocks. They just cascade the exceptions to the calling methods using the "throw" keyword and all exceptions are handled centrally in one place. This is called deferred exception handling where the exceptions are deferred in the place where they occur and propagated to a parent class which handles it.
When do you say an exception is handled?
There is no catch block that names either the class of exception that has been thrown or a class of exception that is a parent class of the one that has been thrown, then the exception is considered to be unhandled, in such condition the execution leaves the method directly as if no try has been executed
What is root class of all java exception classes?
The root class of all Java exception classes is Throwable. It has two main subclasses: Error, which represents serious problems that a reasonable application should not catch, and Exception, which represents conditions that a typical application might want to catch. Most user-defined exceptions are subclasses of Exception.
Does it matter in what order catch statements for FileNotFoundException and IOException are written?
Yes, it does. The child exceptions classes must always be caught first and the "Exception" class should be caught last
Describe the JAVA throwable class hierarchy and types of exceptions?
In Java there are two main types of Exceptions. * Checked Exceptions - The ones that can be checked & handled in our code. Ex: I/O Exception, SQL Exception etc. In most cases, the compiler itself forces us to catch & handle these exceptions * Un-checked Exceptions - The ones that we cannot & should not handle in our code. Ex. Null Pointer Exception The java.lang.Throwable is the super class of all errors and exceptions in Java. Only objects of this class can be thrown & caught and handled by try-catch blocks. Ex: try { ..... ..... } catch (Exception e){ ... } finally { ... }
What is defferred exceptional handling?
Deferred exception handling refers to a programming design pattern where individual class level methods do not handle exceptions using try catch blocks. They just cascade the exceptions to the calling methods using the "throw" keyword and all exceptions are handled centrally in one place. This is called deferred exception handling where the exceptions are deferred in the place where they occur and propagated to a parent class which handles it.
When do you say an exception is handled?
There is no catch block that names either the class of exception that has been thrown or a class of exception that is a parent class of the one that has been thrown, then the exception is considered to be unhandled, in such condition the execution leaves the method directly as if no try has been executed
What is the super class that handles all runtime exceptions?
import java.lang.Exception, the Exception class.
What is root class of all java exception classes?
The root class of all Java exception classes is Throwable. It has two main subclasses: Error, which represents serious problems that a reasonable application should not catch, and Exception, which represents conditions that a typical application might want to catch. Most user-defined exceptions are subclasses of Exception.
How do you throw user defined exceptions?
Define the exception. Throw it when the exception is detected. class My_Exception {}; // definition void f () { if (some_error) throw My_Exception; } int main () { try { f(); } catch (const My_Exception& err) { // ... } }
When you extend a class and override a method can this new method throw exceptions other than those that were declared by the original method?
No it cannot throw, except for the subclasses of the exceptions thrown by the parent class's method
What happens when you get caught with shrooms in the US?
20 years to Life
What does the idiom you wouldn't be caught dead mean?
I wouldn't be caught dead in sleeping during the class.
Is a fly a vertebrate or invertebrate?
A fly is an invertebrate. All of them. No exceptions.
When you caught sleeping in the class?
Your in big trouble :P
