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what is abstract class ?
when is used in real time ?
give a exp
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Answer Posted / pradeep
An Abstract Class is one in which the member function(s) at
the Base(Parent) Class are left undefined, but declared.
It's upto the Derived(child(ren)) Classes to Implement the
Functions declared in Base...
The most real time example of abstract class and interface
is bulding a house
1)concrete methods are explained with completed house.
2)abstract classes are explained with completed house but a
little bit of work left
3)interfaces are explained with taking a building plan
| Is This Answer Correct ? | 7 Yes | 7 No |
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write a code for this. serial_number contained in the header of the file will be read , if this serial number is less than a previous serial number within a successfully processed file, or is the same as another serial number within a successfully processed file, or if the field contains anything other than 7 digits, then the file must error with the reason ‘Invalid SERIAL_NUMBER’.
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