Student.java

public class Student {
    private int id;
    private String name;
    private double marks;

    // Constructor
    public Student(int id, String name, double marks) {
        this.id = id;
        this.name = name;
        this.marks = marks;
    }

    // Getters and Setters
    public int getId() { return id; }
    public void setId(int id) { this.id = id; }

    public String getName() { return name; }
    public void setName(String name) { this.name = name; }

    public double getMarks() { return marks; }
    public void setMarks(double marks) { this.marks = marks; }

    // Display student info
    public void display() {
        System.out.printf("ID: %d | Name: %s | Marks: %.2f%n", id, name, marks);
    }
}