drjava - Java-Storing values in a while loop -

i beginner in java , have assignment on loops. know question may sound basic couldn't find understandable answer. code looks like;

import java.util.scanner;  public class histogram {   public static void main( string[] args)   {     scanner scan = new scanner( system.in);      // constant      final string ch = "*";      // variables     int number;     int count;     int start;     int width;     int line;     string output;       // program code      count = 0;     number = 0;     start = 1;     width = 0;     line = 0;     output = "";       // creating loop      while ( start == 1)      {       system.out.println( "enter numbers");       number = scan.nextint();        if ( number < 0 )       {         start = 0;       }        else       {           while ( width < number)         {          output = ch + " " ;          width = width + 1  ;            system.out.print(output);         }         width = 0;         }     }    } } 

this runs output of stars printed after each user input. want store output each loop , print them @ end when negative integer entered. how can store outputs don't know how many of them entered user? in short want have following output

enter numbers : 3 5 6 4 -1 //numbers user inputs

3 *** 5 ***** 6 ****** 4 ****

this answer:

import java.util.scanner;  public class histogram {   public static void main( string[] args)   {     scanner scan = new scanner( system.in);      // constant      final string ch = "*";       int count = 0;     int number = 0;     int start = 1;     int width = 0;     int line = 0;     string output = "";     string store="";       // creating loop      while ( start == 1)      {       system.out.println( "enter numbers");       number = scan.nextint();        if ( number < 0 )       {         start = 0;       }        else       {           while ( width < number)         {          output = ch + " " ;          width = width + 1  ;           store+=output;         }         width = 0;         }     }     system.out.print(store);    } }