A common usage of catch and finally together is to obtain and use resources in a try block, deal with exceptional circumstances in a catch block, and release the resources in the finally block.
Questions tagged [try-catch-finally]
435 questions
0
votes
1 answer
I can't use NumberFormatExeption. The program should continue even if the user input a string or non-number
Guessing the number
import java.util.*;
public class LabExer5A
{
public static void main(String args[])
{
Scanner Input = new Scanner (System.in);
System.out.println("Guess a number between 1 and 50");
int…
paulo saim
- 11
0
votes
2 answers
Understanding Try/Finally Suppressed Exceptions
I'm learning Exceptions and I found out that you can have suppressed ones.
I read many examples on stackoverflow but still, they don't work as they are supposed to in the "try/finally" case:
public class MultipleExceptionsExample {
static class…
Unearthly
- 121
- 6
0
votes
1 answer
Why can't function A catch the error thrown by function B
I'm doing try and catch exercises in JavaScript.
here is my code
function getTime1() {
return new Promise((resolve, reject) => {
setTimeout(() => {
resolve(11111);
}, 1000);
});
}
function getTime2() {
return new…
helloAl
- 25
- 4
0
votes
1 answer
Typescript Error: Variable 'resWithStatus' is used before being assigned. ts(2454)
for (const item of filesForUpload) {
let resWithStatus: IResponseType;
try {
const res = await uploadFile(item);
resWithStatus = {
id: res?.id,
name: res?.name,
link: res?.link,
ext: res?.ext,
status:…
Abhishek Sharma
- 617
- 1
- 9
- 17
0
votes
0 answers
Why if we return from finally, rethrow from catch not works?
Why first case prints :
"second level catch"
"top level catch"
and second case prints:
only "second level catch"?
Difference in finally block.
Future main() async {
try {
secondLevelTryCatch();
} catch (e, s) {
print("top level…
Андрей
- 166
- 2
- 7
0
votes
1 answer
How do I exactly use try-catches for fault handling?
So currently I need to implement try-catches, but everywhere I look the try-catch can be relevant. How do you determine where to use the try-catches?
Is there also a generalized way how to implement the try-catches? For example Is there some way how…
Jay
- 189
- 4
- 12
0
votes
1 answer
How to return try block value in java even before finally block start executing?
I have code snippet in java like
Int methodHitByAPI() {
List returnValue = doSomething();
return returnValue;
finishProcess(returnValue);
}
My doubt is that i wanted to execute doSomething() (this method was hit by a post api call…
Indra Neel
- 125
- 2
- 7
0
votes
2 answers
How to ensure that a single finally block will be executed no matter what in a series of consecutive try...catch within the same method?
I want to execute a block of code even if ANY exception is caught in any of the preceding Try/Catch blocks, rather than having Finally blocks after every single Try/Catch. Is this possible to do?
Example:
public void Method()
{
try
{
}
catch…
user12288009
- 19
- 1
0
votes
0 answers
What is alternative to putting a lot of code inside one try catch block of java and not to use multiple try catch blocks
I have a lot of lines inside one try catch blocks . I want to make it such that even if any lines throw any error inside try block , try block should continue to run from next line onward. I hardcoded it with switch and case and whenever an error…
0
votes
2 answers
How to use finally block when using try-catch in a while loop
I have a usecase , wherein I need to read each line from a csv file :
Each line has parameters for a function call.
And I call the function for each entry.
while(csvReader.readLine != null){
try {
the line is divided into two parameters…
59_Varun C U
- 3
- 2
0
votes
0 answers
When will a Try and Catch statement break you out of Try?
If I have multiple Codelines within a Try statement.
will it break me out as soon as 1 of them doesn't function?/through an error?
and if yes, will it ignore the rest of the code within the try statement that is written after the error?
Update:
I…
Niklas Pesthy
- 7
- 1
- 6
0
votes
0 answers
Objective-C trycatch make method returns the method's caller
If a method defines a return, but trycatch works and catch a exception, I thought the method will return a nil, but actually it returns the caller. I am curious about what happened indeed in this operation.
Here is the code:
-…
childrenOurFuture
- 1,889
- 2
- 14
- 23
0
votes
1 answer
How does the compiler understand which exception to run below?
try {
Image image = new Image("MyComputer/Documents/Photos/estambul.jpg");
try {
//...
image.print();
throw new NullPointerException();
} finally {
…
Backwindow
- 21
- 4
0
votes
1 answer
How to use "tryCatch" to skip errors in a nested loop in R?
I am trying to load a few data with a nested-loop using pageviews. You already helped me get this result:
library("pageviews")
lang = c("it.wikipedia")
bm = c("ECB","Christine Lagarde")
x <- list(
list(),
list(),
list(),
list(),
…
Rollo99
- 1,601
- 7
- 15
0
votes
2 answers
tryCatch in R Programming
In R, I want to create a function that return Flag=0 if it encounters any error:
Error<-function(x){
tryCatch(x,
error=function(e{
Flag=0
}
)
}
When I enter: Error(5+b). It does not reflect Flag=0.
Ussu20
- 129
- 1
- 12