java - JOptionPane Input Dialog how to decide if the value is 2 or JOptionPane.CANCEL_OPTION -

i use following code inputdialog:

string c = joptionpane.showinputdialog("select number",joptionpane.ok_option); 

i want user uses integervalues between 0 , 100. handle following code:

while(notallowed){     try{         int t =integer.parseint(c);         if(t==joptionpane.cancel_option)         {             notallowed=false;             cancel=true;         }         if(t<=100 && t>0 &&notallowed)             notallowed=false;     }     catch( exception err)     {}     if(notallowed)         c = joptionpane.showinputdialog("only numbers between 1 , 100 allowed");     } 

now if uses types number 2 clicking cancel button because value of joptionpane.cancel_option 2. how can find out if cancel clicked or input value 2.

joptionpane returns null if user clicks on cancel. otherwise value returned. figured out using small example:

public class joptionpanetest {      public static void main(string[] args) {         object obj = joptionpane.showinputdialog(null, "test", "test-text");         system.out.println(obj);     }  }