Why am I not getting input from my string variable "str" through my scanner after I print odd even condition?

Question

Why am I not getting input from my string variable "str" through my scanner after I print odd even condition?

package com.practice.program;

import java.util.Scanner;

public class EvenOddPrint {

public static void main(String[] args) {
    Scanner obj=new Scanner(System.in);
    String str="";
    do{
    System.out.println("Enter any elements??");
    int number=obj.nextInt();
    if(number%2==0){
        System.out.println("Number is Even "+number);
    }else{
        System.out.println("Number is odd "+number);
    }
    System.out.println("Do you want to continue yes or no??");
    str=obj.nextLine();
    }while(str.equals("yes"));
    //obj.close();
}

}