Answer:

No. Variables can be declared in the middle of a program. You should declare them in whatever location makes the program easiest to understand.

A Run of the Program

Here (again) is a sample data file for the program, called student.data. 

3          
87
98
95
4          
78
82
91
84

Here is a sample run of the program. 

C:\users\default\JavaLessons>java TestGroups

File name? student.data
Group A average: 93.33333333333333
Group B average: 83.75

C:\users\default\JavaLessons>

QUESTION 12:

  1. How will the user indicate if group has no data?
  2. Will the program run correctly if one or more groups has no data?
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