"dart try-catch" Code Answer's
You're definitely familiar with the best coding language Dart that developers use to develop their projects and they get all their queries like "dart try-catch" answered properly. Developers are finding an appropriate answer about dart try-catch related to the Dart coding language. By visiting this online portal developers get answers concerning Dart codes question like dart try-catch. Enter your desired code related query in the search bar and get every piece of information about Dart code related question on dart try-catch.
dart try-catch
try {
// ...
} on SomeException catch(e) {
//Handle exception of type SomeException
} catch(e) {
//Handle all other exceptions
}
Source: stackoverflow.com
dart try
HOW TO HANDLE EXCEPTIONS IN DART/FLUTTER!
# ------------------------ CASE 1: --------------------------- #
When you know the exception to be thrown, use ON Clause
try {
int result = 12 ~/ 0;
print("The result is $result");
} on IntegerDivisionByZeroException {
print("Cannot divide by Zero");
}
# ------------------------ CASE 2: --------------------------- #
When you do not know the exception use CATCH Clause
try {
int result = 12 ~/ 0;
print("The result is $result");
} catch (e) {
print("The exception thrown is $e");
}
# ------------------------ CASE 3: --------------------------- #
Using STACK TRACE to know the events that occurred before the
Exception was thrown (trace and print the code steps after the
error)
try {
int result = 12 ~/ 0;
print("The result is $result");
} catch (e, s) {
print("The exception thrown is $e");
print("STACK TRACE \n $s");
}
# ------------------------ CASE 4: --------------------------- #
Whether there is an Exception or not, FINALLY Clause is always
Executed
try {
int result = 12 ~/ 3;
print("The result is $result");
} catch (e) {
print("The exception thrown is $e");
} finally {
print("This is FINALLY Clause and is always executed.");
}
# ------------------------ CASE 5: --------------------------- #
Custom Exception.The throw keyword is used to explicitly raise
an exception, and, in this case, that exception was defined by
the following exemple:
void main(){
try {
depositMoney(-200);
} catch (e) {
print(e.errorMessage());
} finally {
// Code
}
}
class DepositException implements Exception {
String errorMessage() {
return "You cannot enter amount less than 0";
}
}
void depositMoney(int amount) {
if (amount < 0) {
throw new DepositException();
}
}
All those coders who are working on the Dart based application and are stuck on dart try-catch can get a collection of related answers to their query. Programmers need to enter their query on dart try-catch related to Dart code and they'll get their ambiguities clear immediately. On our webpage, there are tutorials about dart try-catch for the programmers working on Dart code while coding their module. Coders are also allowed to rectify already present answers of dart try-catch while working on the Dart language code. Developers can add up suggestions if they deem fit any other answer relating to "dart try-catch". Visit this developer's friendly online web community, CodeProZone, and get your queries like dart try-catch resolved professionally and stay updated to the latest Dart updates.