Question

write a class encapsulating the concept of a student assuming that the student has the following attributes the name of student the average of the student the

rite a class encapsulating the concept of a Student, assuming that the Student has the following attributes: the name of the student, the average of the student, and the student's GPA. Include a default constructor, an overloaded constructor, the accessors and mutators, and methods, toString() and equals(). Also include a method returning the letter grade base on the following range for the average: Letter Grade Average Range 90-100 85-89 80-84 75-79 70-74 65-69 60-64 0-59 B+ C+

Answer 1

class Student
{
//declare instance variables
private String name;
private int average;
private double gpa;
//default constructor
public Student()
{
name=" ";
average=0;
gpa=0.0;
}
//parameterized constructor
public Student(String name,int average,double gpa)
{
setName(name);
setAverage(average);
setGpa(gpa);
}
//accessor and mutators
public void setName(String name)
{
this.name=name;
}
public String getName()
{
return this.name;
}
public void setAverage(int average)
{
this.average=average;
}
public int getAverage()
{
return this.average;
}
public void setGpa(double gpa)
{
this.gpa=gpa;
}
public double getGpa()
{
return this.gpa;
}
//check objects are equal or not
public boolean equals(Student s)
{
if(getName().equals(s.getName()) && getAverage()==s.getAverage() && getGpa()==s.getGpa())
return true;
else
return false;
}
public String toString()
{
return "Name ="+getName()+" ,Average= "+getAverage()+" ,GPA= "+getGpa()+", Grade= "+calculateGrade();
}
public String calculateGrade()
{
int avg=getAverage();
if(avg>=90 && avg<=100)
return "A";
else if(avg>=85 && avg<=89)
return "B+";
else if(avg>=80 && avg<=84)
return "B";
else if(avg>=75 && avg<=79)
return "C+";
else if(avg>=70 && avg<=74)
return "C";
else if(avg>=65 && avg<=69)
return "D+";
else if(avg>=60 && avg<=64)
return "D";
else
return "F";
}
}