please explain this code
                                                    public class B {
public int add()
{
return 011;
}
public static void main(String[] args)
{
B b1=new B();
        
System.out.println(b1.add());
}
}
the output is 9, how it will comes....
                    
                    public int add()
{
return 011;
}
public static void main(String[] args)
{
B b1=new B();
System.out.println(b1.add());
}
}
the output is 9, how it will comes....
            0
        
     
                                             
