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Thread: Print Student average, high, and low grades through array?

  1. #1
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    Default Print Student average, high, and low grades through array?

    So I need to make my program print the total number of students, the average grade, and both the high and low grade through the array which I created through the text file attached. Can someone help me understand how to do this? What I have so far is below:

    import java.util.Scanner;
    import java.io.*;

    public class Student
    {
    String fname, lname, number, status;
    int grade;


    public Student(String fname, String lname, int grade)
    {
    this.fname = fname;
    this.lname = lname;
    this.grade = grade;
    this.status = getStatus(grade);

    }

    public String getStatus(int grade)
    {
    String status = null;
    if (grade > 89)
    status = "Excellent";

    if (grade >= 60 && grade <= 89)
    status = "Okay";

    if (grade < 60)
    status = "Failure";

    return status;
    }
    public String toString(){
    return fname + " " + lname + " " + grade;
    }
    }




    import java.util.Scanner; //imports Java Scanner
    import java.io.*;//imports File Scanner
    public class Grades //Name of Class

    {
    public static void main (String[] args) throws IOException
    { String first_name, last_name;
    int grade = 0, total=0, count=0, count1 = 0, count2 = 0, count3 = 0, count4 = 0, count5 = 0, count6 = 0;
    int arrCtr = 0;

    Student st[] = new Student[4] ;


    double average = 0;
    Scanner fileInput = new Scanner(new File("students.txt"));
    while (fileInput.hasNext())//scans file
    {
    first_name = fileInput.next();
    last_name = fileInput.next();
    grade = fileInput.nextInt();
    st[arrCtr] = new Student(first_name,last_name,grade);
    arrCtr = arrCtr + 1;
    }
    count = arrCtr + 1;
    System.out.println ("Students with excellent grades");
    for(int i=0; i<arrCtr; i++)
    {


    if (st[i].status == "Excellent") {
    System.out.println(st[i].toString() );

    }
    } // end for
    System.out.println ("Students with okay grades");
    for(int i=0; i<arrCtr; i++)
    {


    if (st[i].status == "Okay")

    System.out.println(st[i].toString() );

    }
    System.out.println ("Students with failing grades");
    for(int i=0; i<arrCtr; i++){



    if (st[i].status == "Failure")

    System.out.println(st[i].toString() );

    }





    }
    }

    Any help would be greatly appreciated.
    Attached Files Attached Files


  2. #2
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    Default Re: Print Student average, high, and low grades through array?

    What specific problems do you have? Ask a specific question get a specific answer.

    BTW do not compare Strings (or other objects) with ==, use the equals method instead.
    Improving the world one idiot at a time!

  3. #3
    Super Moderator Norm's Avatar
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    Default Re: Print Student average, high, and low grades through array?

    Please Edit your post and wrap your code with[code=java]<YOUR CODE HERE>[/code] to get highlighting
    If you don't understand my answer, don't ignore it, ask a question.

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