NEED OF EXCEPTION IN JAVA

Question

(1) exception handling means we will slove runtime error(0r exception)those occurred during program execution.
(2)if program terminate abnormally,we will lose previously entered all values and all transection.
(3) exception handling means it's logical error
example:-

Facebook
explation:- if we enter wrong user name and password that time brower not closed page ...catch error and show on screen..

exception divided into two sub type..
1.error
2.exception

runtime exception following..:-
1.arithmatic exception
2.nullpointerexception
3.indexoutofboundexception

Answer 1

Exceptions are use to avoid abnormal termination of program, while executing.

Answer 2

Please provide a link to your Code Playground code so we can help you troubleshoot the specific issues you are running into.

The Code Playground should be relatively easy to find in the website version of SoloLearn, but if you are in the app version, it can be accessed via the curly braces, green circle with plus sign to add a new project, then select the project type.

Looking forward.

Answer 3

Exceptions in Java have this structure:
try {
// code that throws an exception
} catch (Exception e) {
// code that run when an exception occurs
}
"Exception" is the generic class, you can insert a predefined exception like NullPointerException or an exception written by your own.

Answer 4

you can also manually throw exceptions

Answer 5

Wooooowww

Answer 6

Better to say there is Throwable, which is extended by Exception and Error.

Typically you don’t need to catch Errors (they mean something is too wrong and we cannot do anything with this).

Exceptions may be caught and the program may recover after it.
RuntimeExceptions usually mean there some bug in the code (like NullPointerException, IllegalStateException...). Typically they are also not caught.

Exceptions just state something went wrong (password is wrong, file cannot be opened, program failed to connect to the server or failed to get data from it, the last issue results in for example famous 404 error in browsers, for example; without a catch block browser would have died after an exception)

P.S. Avoid catch (Exception e), catch only what you need (IOException, SocketException...)