Hashmaps password lock java -

i have made password lock thing in java test skills in learning hash maps. code:

package com.zach.password;  import java.util.hashmap; import java.util.random; import java.util.scanner;  public class password  { public static void main(string[] args) {     @suppresswarnings("resource")     scanner in = new scanner(system.in);     random r = new random();     hashmap<string, string> names = new hashmap<string, string>();     hashmap<string, integer> passwords = new hashmap<string, integer>();     hashmap<string, integer> randnums = new hashmap<string, integer>();      while(true)     {         system.out.println("please enter name!!");         string name = in.nextline();         if(names.containskey(name))         {             int tries = 2;             while(tries != 0)             {                 if(tries != 0)                 {                     system.out.println("what password?");                     int normpassword = in.nextint();                      if(normpassword == passwords.get(name))                     {                         system.out.println("welcome, " + name);                         system.out.println("this random number:\n");                         break;                     }                     else                         system.out.println("incorrect");                 }                 else if(tries == 0)                 {                     system.out.println("this account locked! unlock entering random number!!");                     int lockedrand = in.nextint();                     if(lockedrand == randnums.get(name))                     {                         system.out.println("welcome, " + name);                         system.out.println("this random number:\n");                         break;                     }                     else                         system.out.println("incorrect");                 }             }         }         else         {             int randnum = 1 + r.nextint(99);             randnums.put(name, randnum);             names.put(name, name);             system.out.println("enter password!!");             int password = in.nextint();             passwords.put(name, password);             system.out.println("welcome, " + name);             system.out.println("this random number:\n" + randnum);         }     } } 

}

i not sure problem is, whenever enter name goes else statement if names contains key... not stop program , rerun... doesn't go down there.

you have use replace in.nextline() in.next(); scanning name. in.next(); blocks application until user input submitted. in.nextline() gives rest of current line , changes position. therefore returns empty string if no input given user.