Add files via upload

Single.java

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+import java.util.Scanner;
+class Studentdetails
+{
+String name;
+int age;
+int rollno;
+Scanner sc=new Scanner(System.in);
+void input()
+{
+System.out.println("enter the name of student");
+name= sc.nextLine();
+System.out.println("enter the age of student");
+age=sc.nextInt();
+System.out.println("enter the rollno of the student");
+rollno=sc.nextInt();
+}
+void display()
+{
+System.out.println("Name:" +name);
+System.out.println("Age:" +age);
+System.out.println("Roll no:" +rollno);
+}
+}
+class Student extends Studentdetails
+{
+private int a,b,c;
+void Academics()
+{
+input();
+System.out.println("enter the marks of physics");
+a=sc.nextInt();
+System.out.println("enter the marks of maths " );
+b=sc.nextInt();
+System.out.println("enter the marks of chemistry");
+c=sc.nextInt();
+}
+void getDisplay()
+{
+display();
+System.out.println("Physics:" +a);
+System.out.println("Maths:" +b);
+System.out.println("Chemistry:" +c);
+}
+}
+class Single{
+public static void main(String args[])
+{
+Student S=new Student();
+S.Academics();
+S.getDisplay();
+}
+}