public class OOP1 {
    public static void main(String[] args) {

	Student[] s = new Student[3];
	s[0] = new Student("Dimmu",3.7);
	s[1] = new Student("Dani",3.6);
	s[2] = new Student("Shagrath",3.9);

	System.out.println("Max Student is "+Student.maxGPA(s));
    }
}

class Student implements Comparable {
    private String name;
    private double gpa;

    public Student(String n,double g) {
	name = n;
        gpa = g;
    }

    public String toString() {
	return name+": "+gpa;
    }

    public int compareTo(Object s) {
	double diff =  gpa - ((Student) s).gpa;
	if (diff < 0) return -1;
	else if (diff > 0) return 1;
	else return 0;
    }

    public static Student maxGPA(Student[] s) {
	Student max = s[0];
	for (int c=1; c<s.length; c++)
	    if (s[c].compareTo(max) > 0) max = s[c];
	return max;
    }
}