java - Unallocated amount in item line -

i have question regarding how allocate given amount line of items. basic have kind of simple code. how reconcile each line item balance amount 0 if paid amount sufficient. if not, last item has balance pay. suggestion or algorithm on this? thanks. output in comment.

public static void main(string[] args) {     bigdecimal paidamount = bigdecimal.valueof(200);     list<item> items = initializeitems();     calculateitembalanceamount(paidamount, items);     displayitems(items); }  private static void calculateitembalanceamount(bigdecimal paidamount, list<item> items) {     (item item : items) {         if (paidamount.compareto(item.gettotalowed()) > 0) {             item.settotalpaid(item.gettotalowed());             item.setbalance(item.gettotalowed().subtract(item.gettotalpaid()));         } else {             item.settotalpaid(paidamount);             item.setbalance(paidamount.subtract(item.gettotalowed()));             break;   // ugly         }     } }  protected static list<item> initializeitems() {     list<item> items = new arraylist<>();     item item = new item(bigdecimal.valueof(1000));     items.add(item);     item = new item(bigdecimal.valueof(1000));     items.add(item);     item = new item(bigdecimal.valueof(1000));     items.add(item);     return items; }  protected static void displayitems(list<item> items) {     system.out.print(stringutils.rightpad("total owed", 15));     system.out.print(stringutils.rightpad("paid", 15));     system.out.print(stringutils.rightpad("balance paid", 15));     system.out.println();     (item : items) {         system.out.print(stringutils.rightpad(i.gettotalowed().tostring(), 15));         system.out.print(stringutils.rightpad(i.gettotalpaid().tostring(), 15));         system.out.print(stringutils.rightpad(i.getbalance().tostring(), 15));         system.out.println();     } }  private static class item {     private bigdecimal totalowed = bigdecimal.zero;     private bigdecimal totalpaid = bigdecimal.zero;     private bigdecimal balance = bigdecimal.zero;      public item(bigdecimal totalowed) {         this.totalowed = totalowed;     }      public bigdecimal gettotalowed() {         return totalowed;     }      public void settotalowed(bigdecimal totalamount) {         this.totalowed = totalamount;     }      public bigdecimal getbalance() {         return balance;     }      public void setbalance(bigdecimal balance) {         this.balance = balance;     }      public bigdecimal gettotalpaid() {         return totalpaid;     }      public void settotalpaid(bigdecimal totalpaid) {         this.totalpaid = totalpaid;     } } 

if understand question want remaining balance user has pay.

so in code getting remainder how money user has in account. when run code, getting negative remainder -200.

if @ expected value in balance i.e. 200. basically, want if remainder negative, amount remaining balance.

after for loop can add below code.

bigdecimal balance = bigdecimal.valueof(0);; if (remainder.signum() == -1) {     balance = remainder.negate();     system.out.println("balance : " + balance); }