Can try catch be nested?
Yes, we can declare a try-catch block within another try-catch block, this is called nested try-catch block.
How does nested try catch work?
When a try catch block is present in another try block then it is called the nested try catch block. Each time a try block does not have a catch handler for a particular exception, then the catch blocks of parent try block are inspected for that exception, if match is found that that catch block executes.
Can we use multiple try catch?
You cannot have multiple try blocks with a single catch block. Each try block must be followed by catch or finally. Still if you try to have single catch block for multiple try blocks a compile time error is generated.
How many times you can write catch block?
You can write multiple catch blocks in a C# program but only one will be executed at one time after which control will go to the finally block, if it exists. At a time only one catch block will executed. No multiple catch blocks is not executed .
Can we use nested try blocks?
In Java, using a try block inside another try block is permitted. It is called as nested try block. Every statement that we enter a statement in try block, context of that exception is pushed onto the stack.
Can we write finally block without try block?
A finally block must be associated with a try block, you cannot use finally without a try block. You should place those statements in this block that must be executed always.
Does every time catch block is required?
Nope, not at all. Its not mandatory to put catch after try block, unless and until the try block is followed by a finally block. Just remember one thing, after try, a catch or a finally or both can work.
Can we throw exception without try catch?
Yes it is Ok to throw an exception when it isn’t inside a try block. All you have do is declare that your method throws an exception.
Can we execute try without catch?
Yes, It is possible to have a try block without a catch block by using a final block. As we know, a final block will always execute even there is an exception occurred in a try block, except System. exit() it will execute always.
Is Catch mandatory in try catch?
Yes you can write try without catch. In that case you require finally block. Try requires either catch or finally or both that is at least one catch or finally is compulsory.
Can try catch blocks be nested in C?
C# | Nesting of try and catch blocks. In C#, the nesting of the try & catch block is allowed. The nesting of try block means one try block can be nested into another try block. The various programmer uses the outer try block to handling serious exceptions, whereas the inner block for handling normal exceptions.
What is the use of nested try block in Java?
Generally, nested try blocks are used to permit different groups of the error to be handled in different ways. It is a necessary condition that a try block must be followed by a catch or finally blocks because if you use a try block without a catch or finally then you will tend to a compile-time error.
Why must a try block be followed by a catch block?
It is a necessary condition that a try block must be followed by a catch or finally blocks because if you use a try block without a catch or finally then you will tend to a compile-time error.
Why is this line not being executed in the try-case?
In your case, the line that isn’t being executed is occurring after an exception in the same finally block, so it gets skipped. The finally block is useful for cleaning up any resources that are allocated in the try block, and for running any code that must execute even if an exception occurs in the try block.