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In this video, we are discussing user defined exceptions with one demonstration.

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So here is the demonstration for you.

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So in this session, we are discussing user defined exceptions where defined one class, the name of

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the class is voter's eligibility, which is inheriting the class exception.

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And these voters eligibility class is having one method that is a constructor to have defined.

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And from the constructor, we have called the best class constructor that is using the method support

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he had.

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The best class is the one exception.

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So voter's eligibility is one.

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It was a different class, which is inheriting the best class.

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That is our exception.

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And these voters eligibility is having one constructor from the constructor.

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We have called the super method to call the best class constructor.

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So now let us come to the to the other part of the program.

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Call within the tribe block.

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Each has been initialized with 12 and if it is less than a pin, then raise voter's eligibility.

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So here we are using that use a different exception.

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So that's why we're manually raising the exception, that is a voter's eligibility to handle the situation.

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We having the exit block, that is the exact voter's eligibility, which is printing the age is less

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than 18 here.

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And when this particular exception will not be raised, then the content will come back to the else

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block.

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And here age is greater than or equal to 18.

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This particular code will get excluded.

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So now let us go for the execution, for the better understanding.

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You see, the age is less than 18 is getting printed.

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So that means that age is 12.

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So 12 is less than 18.

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The condition is true.

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So this voter's eligibility will be raised and then the candidate will come back to this voter's eligibility.

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So age is less than 18 is getting printed.

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So now let us go for inclusion of the final here.

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So let us go for the final.

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So we're hitting this one end of the program, you can find that the final block is getting executed.

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So which blocks are getting executed at first try as the age is below 18.

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So the exit block is block is not getting its control for the execution and then the final block is

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getting executed here.

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So now let us go for some modifications here that are making this one C21.

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So let's let us see what will happen.

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So here we are having this 21.

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So except so the Rays voter's eligibility will not be executed.

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The exception will not be raised.

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So contant will come to the else block.

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So Agee's get that they're not equal to 18.

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That message has got printed, that string has got printed and final block is getting printed irrespective

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of the fact, without any exception has occurred or not.

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So here we are printing the age.

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He had a print in this age, you can find that the ages 21, it is greater than or equal to 18 else.

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Block has got a scandal for execution end up the program to finally block has got its content if it

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make this one 12.

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Then ages 12.

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So this particular trade block has got to control from here.

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This condition is true.

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So the voter's eligibility will be raised.

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Will come to the exit block.

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So age is less than 18 has got printed.

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That else block will be skipped.

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The final block will get the control end up.

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The program is getting executed.

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So now let us suppose I'm just putting this to within double quotes.

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So it has become a string.

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So here to see one error has occurred, there is a typo in it, so I should have the respect to block

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prototype better.

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So age is not numeric, so that is a typo.

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You can find that ages 12, so the trade block has got its control and got execution.

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Now, you see here we are performing this check.

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That means age is less than 18.

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So age is a string.

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So this comparison cannot be done.

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So age is not numeric.

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So the respective TYPEDEF will be raised automatically.

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We're not raising when this comparison will be done, then the system will be raising this type error.

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So control will come to this except riperton and age is not numeric.

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That particular string is getting printed and then the final block is getting printed, is getting executed

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and the statement is getting printed.

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So you are getting this idea how this user defined exceptions can be written in about Biton.

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Thanks for watching this video.