Member Avatar for nlanka 
public class Average
{
    private double [] Score;
    int index;

    public Average(double [] s)
    {
        Score = new double[s.length];



        for(index=0; index<s.length; index++)
        {

            if(Score[index]>100 && Score[index]<0)
              Score[index]=s[index];
         }


      }









    public double getAverage()
    {
        double total=0.0;
        double average = 0.0;
        for(double value: Score)
        total+=value;
         average= Score.length/total;
         return average;

    }
}

the actual assingment is to write an IllegalArgumentException method inoder to prevent the program from accepting negative or score grater than 100

Edited by Nick Evan because: Fixed formatting
  • 3 Contributors
  • 3 Replies
  • 103 Views
  • 21 Hours Discussion Span
  • Latest Post Latest Post by javaAddict
Member Avatar for masijade

Okay? And what have tried?

Member Avatar for nlanka

by try catch block not working

public class Average
{
	private double [] Score;
	int index;

	public Average(double [] s)


	{

		Score = new double [s.length];





		for(index=0; index<s.length; index++)

		{

			if(Score[index]>100)
			{
				throw new IllegalArgumentException("Score is too high:");
			}
			if(Score[index]<0)
				throw new IllegalArgumentException("Score is too high:");
				Score[index] = s[index];

		 }


	  }











	public double getAverage()
	{
		double total=0.0;
		double average = 0.0;
		for(double value: Score)
		total+=value;
		 average= Score.length/total;
		 return average;

	}
}
import java.util.Scanner;// need for input

public class AverageDemo
{
	public static void main(String [] args)
	{
		final int Tscore_size=5;
		double [] scores = new double[Tscore_size];


		getValues(scores);




		Average Testa= new Average(scores);

		System.out.println();
		System.out.println("The Average of tests: "  +Testa.getAverage());

	}

	private static void getValues(double [] array)
	{
				try
				{

				Scanner keyboard = new Scanner(System.in);
				System.out.println("enter score of each test:");





			for(int index=0; index<array.length; index++)
			{
			System.out.println("scores " + (index+1) + ":");


			array[index]=keyboard.nextDouble();
		}

	}



		catch(IllegalArgumentException e)
		{
			System.out.println(e.getMessage());
		}

	}
}
Member Avatar for javaAddict

In your class the "s" input is the one that has the values not the Score. I mean it is the "s" that you pass as parameter, then you put values from s to Score. Why on earth are you checking the values of Score if you put the values "s" in it after the checking?

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