Untitled

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

import static java.lang.System.exit;

public class DbDemo {

    public static void dbMenus() {
        System.out.println("\n\t\t\t ********* Welcome to my Database *********");
        System.out.println("\t\t\t ----- Please select the DB Operation below -----\n");
        System.out.println("\t\t\t1 - Create Data ");
        System.out.println("\t\t\t2 - Read Data ");
        System.out.println("\t\t\t3 - Update Data ");
        System.out.println("\t\t\t4 - Delete Data ");
        System.out.println("\t\t\t5 - Exit");
        System.out.print("\t\t\t\tSelect any option \n");

        Scanner sc = new Scanner(System.in);
        //System.out.println(sc.next());
        int userInput = sc.nextInt();

        switch (userInput) {
            case 1:
                System.out.println("You've selected Menu 1. Let's add some data");
                createOperation();
                break;
            case 2:
                System.out.println("You selected option 2");
                break;
            case 3:
                System.out.println("You selected option 3");
                break;
            case 4:
                System.out.println("You selected option 4");
                break;
            case 5:
                System.out.println();
                exit(0);


        }
    }

    private static void createOperation() {

        final String uname = "root";
        final String pass = "";
        Scanner sc = new Scanner(System.in);

        System.out.println("\t\t\t*'Your ID' ....");
        System.out.print("\t\t\tEnter student ID number : ");
        int id = sc.nextInt();
        System.out.print("\t\t\tEnter student name : ");
        String name = sc.next();
        System.out.print("\t\t\tEnter student roll : ");
        String roll = sc.next();
        //  System.out.print("\t\t\tIs student scholar \t Type 0 for false and 1 for true: ");
        //    String location = sc.next();

        // String query="INSERT INTO tbl_students (id, name, roll, is_scholar) values ('"+id+"','"+name+"','"+roll+"')";
        String query = "INSERT INTO tbl_students (name, roll) values ('" + name + "','" + roll + "')";
        try {
            Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/db_test", "root", "");
            Statement stmt = con.createStatement();
            int rows = stmt.executeUpdate(query);
            if (rows == 1) {
                System.out.println("\t\t\t rows affected....");
            } else {
                System.out.println("\t\t\tSomething is Wrong.....!! ");
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }


    }


    public static void main(String[] args) {
        dbMenus();
    }
}