Public? Static electricity int？ Shuru ()? {

Scanner? sr？ =? New? Scanner (system. in);

int？ b = 0；

Bull? I = true;

while(i){

I = false;

Try it? {

sr？ =? New? Scanner (system. in); //? Re-instantiate sc

b = Sr . nextint()；

}? Catch? (exception? e)？ {

system . out . println("…………");

I = true;

}

}

Sr . close()；

Return? b；

}