java – 我收到从int到boolean类型不匹配的错误

import java.util.Scanner;

public class Even_or_odd {
    public void Check_even_or_odd(int a) {
        if(a&1)//error:Type mismatch: cannot convert from int to boolean
            System.out.println("odd");
        else
            System.out.println("even");
   }
   public static void main(String[] args) {
        System.out.println("enter a number to check even or odd");
        Scanner scan=new Scanner(System.in);
        int a=scan.nextInt();
        scan.close();
        Even_or_odd e=new Even_or_odd();
        e.Check_even_or_odd(a);
    }
}