Design a TestScores class that has fields to hold three test scores. The class should have a constructor, accessor and mutator methods for the test score fields, and a method that returns the average of the test scores. Demonstrate the class by writing a separate program that creates an instance of the class. The program should ask the user to enter three test scores, which are stored in the TestScores object. Then the program should display the average of the scores, as reported by the TestScores object.

Answered below

Explanation:

class TestScores {

double test1;

double test2;

double test 3;

public TestScores (double test1, double test2, double teat3){

this.test1= test1;

this.test2 = test2;

this.test3 = teat3;}

//mutator

public setTest1(double test1){

this.test1 = test1;

}

//accessor

public double getTest1(){

return test 1;

}

//Write same accessors and mutators for test2 and test3

public double getTestAverage(){

double sum = test1+test2+test3;

return sum / 3;

}

}

class TestRun{

public static void main (String [] args){

TestScores scores = new TestScores(50.5, 40.0, 80.7)

int average = scores.getTestAverage();

System.out.print(average);

}