PROGRAM CONVERT A NUMBER TO A STRING

import java.util.*;
class Numtostring{
private static final String[] centuarys={"","Thousent ","Million ","Billion ","Trillion "};
private static final String[] tenth={"","Ten ","Twenty ","Thirty ","Fourty ","Fifty ","Sixty ","Seventy ","Eighty ","Ninety "};
private static final String[] numbers={"","One ","Two ","Three ","Four ","Five ","Six ","Seven ","Eight ","Nine ","Ten ",
"Eleven ","Twelve ","Thirteen ","Fourty ","Fifteen ","Sixteen ","Seventeen ","Eighteen ","Nineteen "};
private String converting(int number){
String item;
if(number%100<20){
item=numbers[number%100];
number/=100;
}
else{
item=numbers[number%10];
number/=10;
item=tenth[number%10]+item;
number/=10;
}
if(number==0)
return item;
return numbers[number]+"Hundred "+item;
}
public String convert(int number){
if(number==0){
return "zero";
}
String negative="";
if(number<0){
number=-number;
negative="Negativenumber";
}
String item="";
int value=0;
do{
int n=number%1000;
if(n!=0){
String s=converting(n);
    item=s+centuarys[value]+item;
}
value++;
number/=1000;
}while(number>0);
return(negative+item).trim();
}
public static void main(String[] args){
Numtostring obj = new Numtostring();
Scanner sc = new Scanner(System.in);
int no=sc.nextInt();
System.out.println(obj.convert(no)+" ");
}
}
INPUT:12345

OUTPUT:Twelve Thousent Three Hundred Fourty Five