import java.util.Scanner;
 
public class StudentPercentage {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
 
        // Input student details
        System.out.print("Enter Student Name: ");
        String name = sc.nextLine();
 
        System.out.print("Enter Roll Number: ");
        int rollNo = sc.nextInt();
 
        float totalMarks = 0;
 
        System.out.println("Enter marks in 5 subjects:");
        for (int i = 1; i <= 5; i++) {
            System.out.print("Subject " + i + ": ");
            float marks = sc.nextFloat();
            totalMarks += marks;
        }
 
        // Calculate percentage
        float percentage = (totalMarks / 500) * 100;
 
        // Display output
        System.out.println("\n--- Student Details ---");
        System.out.println("Name: " + name);
        System.out.println("Roll Number: " + rollNo);
        System.out.println("Percentage: " + percentage + "%");
 
        sc.close();
    }
}

Output

 
SAMPLE INPUT : 
Enter Student Name: Rahul Sharma
Enter Roll Number: 25
Enter marks in 5 subjects:
Subject 1: 78
Subject 2: 85
Subject 3: 90
Subject 4: 88
Subject 5: 79

SAMPLE OUTPUT : 
--- Student Details ---
Name: Rahul Sharma
Roll Number: 25
Percentage: 84.0%

Explanation

The Scanner class is used to read input values.
nextLine() is used for reading the name (String).
nextInt() is used for reading the roll number.
nextFloat() is used for reading marks.
A for loop is used to read marks of 5 subjects.
Percentage is calculated using the formula:

Percentage = (Total Marks) / 500 × 100