public void update() { infoPanel.update(); Object[][] history = new Object[account.getHistory().size()][5]; int i = 0; for (Transaction t : account.getHistory()) { history[i][0] = t.getType(); BigDecimal amount; BigDecimal balance; if (account.getType().isLoan()) { amount = (t.getType().isPositive() ? t.getAmount().negate() : t.getAmount()); balance = t.getBalance().negate(); } else { amount = (t.getType().isPositive() ? t.getAmount() : t.getAmount().negate()); balance = t.getBalance(); } history[i][1] = FORMATTER.valueToString(amount); history[i][2] = FORMATTER.valueToString(balance); history[i][3] = t.getTimestamp(); history[i][4] = t.getFraudStatus(); i++; } historyTable.setModel( new javax.swing.table.DefaultTableModel( history, new String[] {"Type", "Amount", "Balance", "Month", "Flag"}) { @Override public boolean isCellEditable(int rowIndex, int columnIndex) { return false; } }); historyTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); historyTable.revalidate(); }