Multi-dimension ArrayList example

Declare an array of 25 student scores in a test. Fill the array with random numbers between 1 and 100.
Get the average of all marks.
get the average of all students who scored an ‘A’ grade: 80% or over.
how do i write this program

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See this post for how to make multi-dimension ArrayLists: Multi Dimensional ArrayList example

For a beginning, I think you just need a Student class with name, score and grade attributes. Then, you can define an arraylist of Student with a length of 25. Prompt for student name, use the java.util.Random class to generate a random score for the students, test whether the score generated is more than 80, etc, and assign the relevant score. Add this student to the arraylist. Something like this:

Code :

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public class Student {
  private String name;
  private int score;
  private char score;
 
  public void setName( String name ) {
    this.name = name;
  }
 
  public String getName() {
     return name;
  }
 
  public void setScore( int score ) {
    this.score = score;
  }
 
  public int getScore() {
    return score;
  }
 
  public void setGrade( char grade ) {
    this.grade = grade;
  }
 
  public char getGrade() {
    return grade;
  }
 
  public void main( String[] args ) {
    List<Student> students = new ArrayList<Student>();
 
   int i = 0;
   while( i < 25 ) {
        // Generate your scores and grades here
   }
  }
 
 
}

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I hope this helps.