Class.java

package lab19b;

import java.util.Arrays;
import java.util.Scanner;
import static java.lang.System.*;
import static java.util.Arrays.*;

public class Class
{
    private String name;
    private Student[] studentList;

    public Class()
    {
        name="";
        studentList=new Student[0];
    }

    public Class(String clsName, int stuCount)
    {
        name = clsName;
        studentList = new Student[stuCount];
    }

    public void addStudent(int stuNum, Student s)
    {
        studentList[stuNum] = s;
    }

    public String getClassName()
    {
       return name;
    }

    public double getClassAverage()
    {
        double classAverage=0.0;
        for(int i = 0; i < studentList.length; i++)
        {
            classAverage+= studentList[i].getAverage();
        }
        classAverage = (double)classAverage/studentList.length;
        return classAverage;
    }

    public double getStudentAverage(int stuNum)
    {
        return studentList[stuNum].getAverage();
    }

    public double getStudentAverage(String stuName)
    {
        int num = 0;
        for(int i=0; i<studentList.length; i++)
             if(studentList[i].equals(stuName))
                 num = i;

        return studentList[num].getAverage();
    }

    public String getStudentName(int stuNum)
    {
        return studentList[stuNum].getName();
    }

    public String getStudentWithHighestAverage()
    {
        double high = Double.MIN_VALUE;
        String hName ="";
        for(int i = 0; i < studentList.length; i++)
        {
            if(studentList[i].getAverage()> high)
                high = studentList[i].getAverage();
        }
        for(int j = 0; j < studentList.length; j++)
        {
            if(studentList[j].getAverage() == high)
                hName = studentList[j].getName();
        }
        return hName;
    }

    public String getStudentWithLowestAverage()
    {
        double low = Double.MAX_VALUE;
        String hName ="";
        for(int i = 0; i < studentList.length; i++)
        {
            if(studentList[i].getAverage()< low)
                low = studentList[i].getAverage();
        }
        for(int j = 0; j < studentList.length; j++)
        {
            if(studentList[j].getAverage() == low)
                hName = studentList[j].getName();
        }
        return hName;
    }

    public String getFailureList(double failingGrade)
    {
        String output="";
        for(int i = 0; i < studentList.length; i++)
            if(studentList[i].getAverage()< failingGrade)
                output+= studentList[i].getName();
        return output;
    }

    public String toString()
    {
        String output=""+getClassName()+"\n";
        for(int i = 0; i < studentList.length; i++)
        {
            output += studentList[i].toString() + "    " + studentList[i].getAverage() + "\n";
        }
        return output;
    }
}