Java. I need to help with Java exception handling. I try to verify all data entries (must be integer ranged from 0 to 100).

//operation class

class TestScore2

{

private int score1; //for score 1

private int score2; //for score 2

private int score3; //for score 3

//create parameterized constructor

public TestScore2(int sOne, int sTwo, int sThree)

throws IllegalArgumentException

{

score1 = sOne;

score2 = sTwo;

score3 = sThree;

}

public int validScore1(int sOne)

{

if ( sOne < 0 || sOne > 100 )

throw new IllegalArgumentException

("Score for test"+ sOne + "is out of range"

+ " Number can't be less than 0 and"

+ "and greater than 100");

return sOne;

}

public int validScore2(int sTwo)

{

if (sTwo < 0 || sTwo > 100 )

throw new IllegalArgumentException

("Score for test"+ sTwo + "is out of range"

+ " Number can't be less than 0 and"

+ "and greater than 100");

return sTwo;

}

public int validScore3(int sThree)

{

if (sThree < 0 || sThree > 100 )

throw new IllegalArgumentException

("Score for test"+ sThree + "is out of range"

+ " Number can't be less than 0 and"

+ "and greater than 100");

return sThree;

}

//return average of test score

public double getAverage()

{

return (score1 + score2 + score3) /3;

}

public char getLetterGrade()

{

char grade;

if (getAverage() < 60)

grade = 'F';

else if(getAverage() < 70)

grade = 'D';

else if(getAverage() < 80)

grade = 'C';

else if(getAverage() < 90)

grade = 'B';

else

grade = 'A';

return grade;

}

}

// drive class

import java.util.Scanner;

public class TestScoreApp2

{

public static void main(String[] args)

{

//variable declaration

int s1, s2, s3;

//Create a Scanner object for keyboard input

Scanner keyboard = new Scanner(System.in);

//get an user's input for first score

System.out.println("What is your first score? ");

s1 = keyboard.nextInt();

//get an user's input for second score

System.out.println("What is your second score? ");

s2 = keyboard.nextInt();

//get an user's input for third score

System.out.println("What is your third score? ");

s3 = keyboard.nextInt();

try

{

TestScore2 scores = new TestScore2(s1 ,s2, s3);

System.out.println("Average of the test score:" +

scores.getAverage());

System.out.println("Your grade is: " + scores.getLetterGrade());

}

catch(IllegalArgumentException e)

{

System.out.println("You entered a invalid test score");

System.out.println(e.getMessage());

}

}

}