Hello! How to get a size for an array of objects from a passed to the paramer Sc

Question

Hello! How to get a size for an array of objects from a passed to the paramer Scanner object. Suppose I have the textfile which has lines:

A B 2 midterm 100
C D 1 final 90
C D 1 midterm 90
A B 2 final 80
**NO ARRAYLIST IS ALLOWED!** And the textfile is passed into the method. How to get the size for the array non-randomly inside the method from the passed Scanner file?? What if you have infinite numbers of lines, so how could that be done?

public static Exam[] readAllExams(Scanner s) throws ArrayIndexOutOfBoundsException
   {
      
       String firstName = "";
       String lastName = "";
       int ID = 0;
       String examType = "";
       char examTypeCasted;
       int score = 0;
      
       int index = 0;
      
       //Exam[] object = new Exam[s.nextInt()];
      
       while(s.hasNext())
       {
           //Returns firtsName and lastName
           firstName = s.next();
           lastName = s.next();
          
           //Returns ID number
           if(s.hasNextInt())
           {
               ID = s.nextInt();
           }
           else
               s.next();
          
           //Returns examType which is 'M' or 'F'
           examType = s.next();
           examTypeCasted = examType.charAt(0);
      
           if(s.hasNextInt())
           {
               score = s.nextInt();
           }
           Exam object = new Exam[s.nextInt()];
         
           Exam object[index] = new Exam(firstName, lastName, ID, examTypeCasted, score);
           //System.out.println();
           index++;
       }
       readExam(s);
       return object;
      
      
   }

Explanation / Answer

The exam function can be written as:

public Exam(String firstName, String lastName,int ID,String examType, int score)

{

this.firstName=firstName;

this.lastName=lastName;

this.ID=ID;

this.examType=examType;

this.score=score;

}

public static Exam[] readAllExams(Scanner s)

{

Exam[] object=new Exam[12];

for(int i=0;i<object.length;i++)< span=""></object.length;i++)<>

{

while(s.hasNext())

{

object[i]=s.next();

}

}

return object;

}

To get a size for an array of objects:

Exam[] object=new Exam[12];

System.out.println(Exam.size());

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