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Explain the user defined Exceptions.
User Defined Exceptions are the exceptions which are defined by user for specific purposed. This enables custom exceptions to be generated and caught in the similar manner as normal exceptions. When defining a User Defined Exception, we need to take care of the below aspects:
It must be extend from Exception class.
Use toString() method to display information about exception.
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can you explain me the er diagram for the online doctor system
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We have to create a world class that contains a 2d array then create an abstract class called organism that contains move() method the organism should move randomly one step at the
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