Contents
- 1 Can you have a try block without a catch block?
- 2 Does try always need a catch?
- 3 Does finally run even if I throw in catch?
- 4 Can’t Java unchecked exceptions be handled using try / catch block?
- 5 When to run code only if no exception is thrown?
- 6 Is it valid to write just a try with no catch or finally?
Can you have a try block without a catch block?
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.
Does try always need a catch?
It always executes, regardless of whether an exception was thrown or caught. You can nest one or more try statements. If an inner try statement does not have a catch -block, the enclosing try statement’s catch -block is used instead. You can also use the try statement to handle JavaScript exceptions.
Does finally run even if I throw in catch?
Yes, the finally blocks always runs… except when: The thread running the try-catch-finally block is killed or interrupted.
What if catch block is empty?
The catch block catches and handles the exception. If the catch block is empty then we will have no idea what went wrong within our code.
Is it possible to implement a catch block without Try blocks?
No, it is not possible because the catch block would be useless as there is no piece of code to throw an exception. The try and catch block always come in pairs like this: Is it possible to implement a catch block without try blocks?
Can’t Java unchecked exceptions be handled using try / catch block?
In a tutorial I found that Unchecked Exception can’t be handled by your code i.e. we can’t use try/catch block and the examples are exceptions like ArrayIndexOutOfBoundsException, NullPointerException. But these exceptions can be handled using try/catch block.
When to run code only if no exception is thrown?
Or if you want your second block of code to be outside the try block: You could also put the if statement in a finally block, but there is not enough information in your question to tell if that would be preferable or not. In this example, doSomething2 () will only be executed if no exception is thrown by doSomething ().
Is it valid to write just a try with no catch or finally?
No catch or finally is invalid. Empty catch or finally is valid. Empty catch means you don’t care about exceptions, you just try to do something and it doesn’t matter if it doesn’t work, you just want to go on. Useful in cleanup functions for example.