Dart: Exceptions Cheat Sheet

# Built-in Dart exceptions include

DeferredLoadException	Thrown when a deferred library fails to load.
FormatException	The exception is thrown when a string or some other data does not have an expected format and cannot be parsed or processed.
IntegerDivisionByZeroException	Thrown when a number is divided by zero.
IOException	Base class for all Inupt- Output related exceptions.
IsolateSpawnException	Thrown when an isolate cannot be created.
Timeout	Thrown when a scheduled timeout happens while waiting for an async result.

# The try/ on/ catch Blocks

try { 
   // code that might throw an exception 
}  
on Exception1 { 
   // code for handling exception 
}  
catch Exception2 { 
   // code for handling exception 
} 

# The Finally Block

try { 
   // code that might throw an exception 
}  
on Exception1 { 
   // exception handling code 
}  
catch Exception2 { 
   //  exception handling 
}  
finally { 
   // code that should always execute; irrespective of the exception 
}

# Throwing an Exception

throw new Exception_name()