java - How to add check for string in do while -


scanner in = new scanner(system.in);  int  menuitem;  do{    system.out.println("choose menu item 1,2,3,4,5: ");     menuitem = in.nextint();   }while(menuitem >5);   //i tried use   //while(menuitem >5 || !in.hasnextint());---> doesnt work 

it shows

exception in thread "main" java.util.inputmismatchexception

in code want validate menu item not string type , not more 5 , repeat choose item menu if input not string type , not more 5

but don't know how validate input if string.

as answer given Φxoce 웃 Пepeúpa, outer while loop run infinitely if user enters no greater 5.
please try this:
1. validate number if string , asked user enter valid number
2.and repeat chhose menu item if correct.

package sample;  import java.util.arraylist; import java.util.scanner;  public class tets  {      public static void main(string[] args) {         scanner in = new scanner(system.in);         int menuitem = 0;         {             system.out.println("choose menu item 1,2,3,4,5: ");             try              {                 menuitem = integer.parseint(in.nextline());             }              catch (numberformatexception e)              {                 system.out.println("wrong input, please enter again");                 menuitem=0;             }         } while (menuitem <= 5 && menuitem >=0);         system.out.println("you have entered no > 5 or no < 0");         system.out.println("exit");         }     }  output: choose menu item 1,2,3,4,5:  2 choose menu item 1,2,3,4,5:  4 choose menu item 1,2,3,4,5:  wrong input, please enter again choose menu item 1,2,3,4,5:  -1 choose menu item 1,2,3,4,5:  6 have entered no > 5 or no < 0 exit 

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