как решить данную проблему.

Question

не могу понять в чем ошибка.
https://code.sololearn.com/c49Ot9U8QEJ7/?ref=app

Answer 1

You want an integer from the user.

myVar is your Scanner.
int age = myVar.nextInt();
Now you can compare age with ret:

if(age < ret)

Also possible:

if(myVar.nextInt() < ret)