Account Table has 3 columns now...you have to change anyfunctions calls of AccountsTable.getValueAt(row, 0);
MAKE SURE IT's 0!! if it's 1 it will throw a null ptr exception
AccountTable was changed to have 3 columns from the 4 colums it used to be. NULL PTR exceptions now, 
Changed DeleteAccountButtonActionPerformed -> String bankacc = (String) AccountsTable.getValueAt(row, 1); TO 
String bankacc = (String) AccountsTable.getValueAt(row, 0) . 
** MUST BE 0 in the param or else null ptr **