// DecimalFormat is speific to display numbers formatted to a certain pattern
import java.text.DecimalFormat;        

// Class name
public class GradeAverageW5                
{
    // declare any variables
    private static double myAverage;
    
    // *FOR AVERAGE* this makes the output display show two decimal places
    private static DecimalFormat two = new DecimalFormat("#,###.00#");    
        
    // *FOR AVERAGE* setter
    public static void setmyAverage(double average)
    { myAverage = average; }
    
    // *FOR AVERAGE* getter
    public static float getmyAverage()
    { return (float)myAverage;    }
    
    
    // *FOR GRADEAVERAGE* This method calculate the average
    public static float getmyAverage(float[] floatArray1)
    {        
        float grade = 0;
        float average = 0;
        int i=0;
        
        for (i=0; i<floatArray1.length; i++)
        {
            grade =  grade + floatArray1[i];
            myAverage = grade/floatArray1.length;
        }
        return (float) myAverage;
    }


    // *FOR ARRAY AND GRADEAVERAGE*
    // This method runs through the Java array and passes it along to the printList method to display them
    public void readList(float[] floatArray1)
    {

        for
        (int i = 0; i < floatArray1.length; i++)  // start i out as 0 and increment by one
            {printList(i,floatArray1); } // call the printList method for output
    } // End of readList method
    
    
    // *FOR ARRAY* Java method printList shows output on the screen for this program
    public void printList(int i,float[] floatArray1)
    {
        //this makes the output display show one decimal place but space for three numbers to the left of the decimal
        DecimalFormat oneDecimalPlace = new DecimalFormat("##0.0");
        
        // Display output of each grade in the array along with the correcponding letter grade
        System.out.println("\nAssignment #"+(i+1)+" grade: "+oneDecimalPlace.format(floatArray1[i]));

        // Call the displayLetter switch method to change numerical grade to a letter grade
        displayLetter(i,floatArray1);
    } // End of printList method
    
    // *FOR ARRAY* Number to letter method with the switch statement
     public void displayLetter ( int i, float[] floatArray1 )
     {
         int whichGrade = 0; // initializing the whichGrade variable
         if ( floatArray1[i] >= 95 && floatArray1[i] <= 100 ) whichGrade = 1;   // test 1
         if ( floatArray1[i] >= 90 && floatArray1[i] <=  94 ) whichGrade = 2;   // test 2
         if ( floatArray1[i] >= 87 && floatArray1[i] <=  89 ) whichGrade = 3;   // test 3
         if ( floatArray1[i] >= 84 && floatArray1[i] <=  86 ) whichGrade = 4;   // test 4
         if ( floatArray1[i] < 60 ) whichGrade = 5;   // test 5
        
        // Here is my switch statement for the above options
        switch (whichGrade)
        {
            case 1: System.out.println("You have an A"); break;  // output for case 1
            case 2: System.out.println("You have an A-"); break;  // output for case 2
            case 3: System.out.println("You have a B+"); break;  // output for case 3
            case 4: System.out.println("You have a B"); break;  // output for case 4
            case 5: System.out.println("You have an F"); break;  // output for case 5
            default: System.out.println("You have an invalid grade!");break;  // output for bad whichGrade array variable
        } // End of switch options
        
     } // End of displayLetter method
    
    
// ***  MAIN  ******************************************** //
    public static void main(String[] args)
    {
        GradeAverageW5 AG = new GradeAverageW5();
        
        // This is my instance variable of type array
        float[] floatArray1 = new float[]{95.2f,93.5f,88.0f,84.5f,57.2f};

        // General output
        System.out.println("\nWeek 5 - Daily Question 2 Program...");
        
        // Get the floatArray1 array list values
        AG.readList(floatArray1);
        
        // *FOR AVERAGE* output
        System.out.println("\nThe grade average is " + two.format(getmyAverage()));
        
    } // End of main method
}

System.out.println("\nThe grade average is " + two.format(getmyAverage()));

System.out.println("\nThe grade average is " + two.format(getmyAverage(floatArray1)));

    public void readList(float[] floatArray1)
    {

        for
        (int i = 0; i < floatArray1.length; i++)  // start i out as 0 and increment by one
            {printList(i,floatArray1); } // call the printList method for output
        setmyAverage(getmyAverage(floatArray1));
    } // End of readList method

       for (i=0; i<floatArray1.length; i++)
        {
            grade =  grade + floatArray1[i];
            myAverage = grade/floatArray1.length;
        }
        return (float) myAverage;

       for (i=0; i<floatArray1.length; i++)
        {
            grade =  grade + floatArray1[i];
        }
        return  grade/floatArray1.length;