JAVA Program to calculate percentage marks of the student

/*
2. Write a program that calculate percentage marks of the student if marks of 6 subjects are given.
*/

import java.util.Scanner;

class Percent_pract2_2{
public static void main(String args[]){
Scanner sc = new Scanner(System.in);
int sum = 0;
float avg;
int marks[] = new int[5];
System.out.println("Enter Marks of subject 1");
marks[0]=sc.nextInt();
System.out.println("Enter Marks of subject 2");
marks[1]=sc.nextInt();
System.out.println("Enter Marks of subject 3");
marks[2]=sc.nextInt();
System.out.println("Enter Marks of subject 4");
marks[3]=sc.nextInt();
System.out.println("Enter Marks of subject 5");
marks[4]=sc.nextInt();


for(int i=0;i<marks.length;i++){
sum += marks[i];
}
avg = (float)sum/marks.length;
System.out.println("Sum = "+sum);
System.out.println("percentage = "+avg);
}

}