Questions related to the finally block in try-catch construct.
Questions tagged [finally]
278 questions
25
votes
10 answers
In Java, is the "finally" block guaranteed to be called (in the main method)?
I'm a Java rookie and I was wondering, if I have the following typical Java code
public class MyApp {
public static void main(String[] args) {
try {
// do stuff
} catch {
// handle errors
} finally {
// clean up…
Hanno Fietz
- 30,799
- 47
- 148
- 234
24
votes
1 answer
python try-finally
Why does the exception in foo whizz by unnoticed, but the exception in bar is raised?
def foo():
try:
raise Exception('foo')
finally:
return
def bar():
try:
raise Exception('bar')
finally:
…
wim
- 338,267
- 99
- 616
- 750
21
votes
9 answers
C# Time of finally execution
Take this code:
using System;
namespace OddThrow
{
class Program
{
static void Main(string[] args)
{
try
{
throw new Exception("Exception!");
}
finally
…
Thanatos
- 42,585
- 14
- 91
- 146
21
votes
8 answers
Finally sometimes confuse me
Today in college we talked a little bit about try, catch and finally.
I got confused about these two examples:
PrintWriter out = null;
try {
out = new PrintWriter(...); // We open file here
} catch (Exception e) {
e.printStackTrace();
} finally…
Miljan Rakita
- 1,433
- 4
- 23
- 44
21
votes
5 answers
What's the `finally` keyword for in PHP?
Consider these two examples
marxjohnson
- 830
- 7
- 21
20
votes
5 answers
The finally block is not running on .NET 4.0, why?
Ok this is kind of a weird issue and I am hoping someone can shed some light. I have the following code:
static void Main(string[] args)
{
try
{
Console.WriteLine("in try");
throw new EncoderFallbackException();
}
…
jquery auth
- 1,267
- 1
- 14
- 24
19
votes
6 answers
Implementation of finally in C++
Is this a good way to implement a Finally-like behavior in standard C++?
(Without special pointers)
class Exception : public Exception
{ public: virtual bool isException() { return true; } };
class NoException : public Exception
{ public:…
Tamara Wijsman
- 12,198
- 8
- 53
- 82
17
votes
5 answers
If I type Ctrl-C on the command line, will the finally block in Java still execute?
I'm running my Java application in cmd.exe in Windows. If I stop the process forcefully by pressing Ctrl-C, and the code at that moment was running in the try block, will the finally block still be executed?
In my tests it seems that, yes, it is…
Hesey
- 4,957
- 6
- 31
- 31
16
votes
1 answer
Can an interrupted Java thread really skip a finally clause?
I was checking into the oft repeated rumour that daemon threads on the JVM treat finally blocks in some special way (they don't, ok?), when I read this, from the Oracle Java tutorial:
Note: If the JVM exits while the try or catch code is being…
SusanW
- 1,550
- 1
- 12
- 22
16
votes
5 answers
Python: Is it possible to access the return value inside the `finally` clause?
I have a return statement inside a try clause:
def f():
try:
return whatever()
finally:
pass # How do I get what `whatever()` returned in here?
Is it possible to get the return value inside the finally clause?
This is more…
Ram Rachum
- 84,019
- 84
- 236
- 374
16
votes
7 answers
Strange finally behaviour?
public class Test2 {
public static void main(String[] args) {
Test2 obj=new Test2();
String a=obj.go();
System.out.print(a);
}
public String go() {
String q="hii";
try {
return q;
…
Harinder
- 11,776
- 16
- 70
- 126
14
votes
3 answers
Return in try & catch versus return in finally?
Is either one of these risky? Is one better? Or is it one of those things you print out and throw a dart at to decide?
I want to do this now that I understand how finally works:
try {
stuff that changes something...
}
catch (System.Exception…
ChuckNeuros
- 151
- 1
- 1
- 5
13
votes
15 answers
Is there a favored idiom for mimicing Java's try/finally in C++?
Been doing Java for number of years so haven't been tracking C++. Has finally clause been added to C++ exception handling in the language definition?
Is there a favored idiom that mimics Java's try/finally?
Am also bothered that C++ doesn't have an…
RogerV
- 3,826
- 4
- 28
- 32
13
votes
3 answers
Will Python execute finally block after receiving Ctrl+C
If you stop a python script with Ctrl+C, will it execute any finally blocks, or will it literally stop the script where it is?
generic purple turtle
- 441
- 1
- 6
- 17
13
votes
4 answers
Is there such case when in try\finally block the finally won't be executed?
I'm studying for my test in Object Oriented Programming and I was wondering if there is any case what so ever that considering the following code:
try {
do something
} catch (someException e) {
} finally {
do something
}
the finally block…
Dave
- 141
- 3