A Java program has a class called Enrolment that stores information about a particular student's enrolment details.
The class has a Student object as one of its fields. The program designer has chosen to store the student ID as a field in both the Enrolment class and the Student class. This is...

Question

A Java program has a class called  Enrolment  that stores information about a particular student's enrolment details.  
 The class has a  Student  object as one of its fields. The program designer has chosen to store the student ID as a field in both the  Enrolment  class  and  the  Student  class. This is...

Answer

Bad program design - it will cause a syntax error, as you can't declare the same field in two different classes.

Answer

Good program design, as having the variable in two different places ensures it will be correct.

Answer

Bad program design - it is an example of code duplication, which should be avoided.

Answer

Necessary, as both the Enrolment and Student classes need to access this information.

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A Java program has a class called Enrolment that stores information about a pa...

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