The file must be called <YourNameProg2.java> (driver program) <YourInitialsHwSco

Question

The file must be called <YourNameProg2.java> (driver program)
<YourInitialsHwScore.java>(Homework Scores file)

Example: KenDeweyProg2.java (driver program)
KDHwScore.java (YIHWScore file)

Ensure you include ALL files required to make your program compile and run.
I would like to see your .java files only.

Proper coding conventions required the first letter of the class start with a capital letter and the first letter of each additional word start with a capital letter.


Style Requirements

Refer to the Java Coding Style Document.
Add comments as required for all .java files.


Overall Requirements

Provide a complete program that handles the entry and display of homework scores. As part of your program, provide a YIHwScore class that contains the points earned on a particular homework and also the maximum possible points on that homework. In order to keep track of the overall average, the YIHwScore class also contains the total points earned on all homework combined and the total possible points on all homework combined. In order to determine letter grades, the YiHwScore class specifies cutoff values for the A, B, C, and D letter grades.

More specifically, the YIHwScore class should contain these constants and variables:

Array constant for the letter grade cutoffs: A = 0.9, B = 0.8, C = 0.7, D = 0.6
One dimensional array, only needs to hold the values, not the letters.
Class variables named totalEarnedPoints and totalPossiblePoints
Instance variables named earnedPoints and possiblePoints


YourNameProg2.java

Provide a main driver method. It should:

Instantiate a 4 element array of YIHwScore and store the values below in this array. In the instantiations, initialize the objects to these values:
hw1: 26.5 earned points, 30 possible points
hw2: 29 earned points, 27.5 possible points
hw3: 0 earned points, 20 possible points
hw4: 16 earned points, 20 possible points
For hw1, hw2, hw3 and hw4 call printGrade. (instance method)
Call printOverallGrade. (class method)
20%

YIHwScore.java

Within your YiHwScore class, include these requirements:

The YIHwScore class should contain a two-parameter constructor that handles initializations for the earnedPoints and possiblePoints instance variables.

Implement a printGrade method that prints a particular homework’s earned points, possible points, and letter grade. The letter grade is based on this scale: A ³ 90%, B ³ 80%, C ³ 70%, D ³ 60%, F < 60%.

Implement a class method named printOverallGrade that prints the overall earned points, overall possible points, and overall letter grade.

Use appropriate modifiers for methods. The modifiers we’ve discussed so far are private, public, and static. Use helping methods when appropriate.
60%

As always, you should:

· Limit your use of class variables and instance variables – only use them if appropriate.

· Use appropriate modifiers for your methods. The modifiers we’ve discussed are private, public, static, and final.

· Use helper methods if appropriate.

Mimic the sample session precisely.



Total Points
100%

Sample Session:

On this homework, you earned 26.5 out of 30.0 possible points: B
On this homework, you earned 29.0 out of 27.5 possible points: A
On this homework, you earned 0.0 out of 20.0 possible points: F
On this homework, you earned 16.0 out of 20.0 possible points: B
On all homework, you earned 71.5 out of 97.5 possible points: C

Explanation / Answer

please rate - thanks

be sure to change to your name and your initials

public class YourNameProg2
{
public static void main(String[] args)

{
int i;
YIHwScore []hw = new YIHwScore[4];
hw[0]=new YIHwScore(26.5,30);
hw[1]=new YIHwScore(29,27.5);
hw[2]=new YIHwScore(0,20);
hw[3]=new YIHwScore(16,20);
for(i=0;i<4;i++)
{
hw[i].printGrade("this");
}
printOverallGrade(hw);   

}
public static void printOverallGrade(YIHwScore hw[])
{int i;
double totalEarned=0, totalPossible=0;
for(i=0;i<4;i++)
   {totalEarned+=hw[i].getEarnedPoints();
    totalPossible+=hw[i].getPossiblePoints();
   }
YIHwScore totHw = new YIHwScore(totalEarned,totalPossible);
totHw.printGrade("all");

}
}

----------------------------------------------

class YIHwScore
{double cutoff[]={.9,.8,.7,.6};
private double earnedPoints,possiblePoints;
public YIHwScore()
{
}
public YIHwScore(double e,double p)
{earnedPoints=e;
possiblePoints=p;
}
public void printGrade(String word)
{char letter='F';
int i;
double grade=earnedPoints/possiblePoints;
for(i=0;i<4;i++)
   if(grade>=cutoff[i])
       {letter=(char)('A'+i);
        i=5;
        }

System.out.print("On "+word+" homework, you earned "+earnedPoints);
System.out.println(" out of "+possiblePoints+" possible points: "+letter);

}
public double getEarnedPoints()
{return earnedPoints;
}
public double getPossiblePoints()
{return possiblePoints;
}

}

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