Nonprimitive_data_type_array

StudentArray.java

import java.util.Scanner;

public class StudentArray {
    Scanner sc = new Scanner(System.in);
    int rollno;
    String name;

    public StudentArray(int rollno, String name) {
        this.rollno = rollno;
        this.name = name;
    }

    StudentArray studentArray [] = new StudentArray[1];
    public StudentArray(){};

    public int getRollno() {
        return rollno;
    }

    public void setRollno(int rollno) {
        this.rollno = rollno;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
    public void insert (String name,int rollno,int position) {
      studentArray[position -1]=new StudentArray(rollno,name);
        }

    //}
    public void traverse() {
        try {
            for (int i = 0; i < studentArray.length; i++) {
                System.out.println(studentArray[i].getName() + " " + studentArray[i].getRollno());
            }
        } catch(NullPointerException e) {
            System.out.println("No value in the array");
        }
    }
    public void deleteindex(int index){
        studentArray[index].setRollno(Integer.MAX_VALUE);
        studentArray[index].setName(null);
    }
}