how to check jTable nullpointer in row

Question

how to check my jtable if null pointer? my code is always null pointer and then can't export to xls. this my code

if (tbGudangSales.getValueAt(i, 5).toString().trim().length() == 0) {
                        status = "tidak ada penjualan";
                    } else{
                        status = tbGudangSales.getValueAt(i, 5).toString();
                    }

                    label = new Label(4, baris, status, bordertabel);
                    excelSheet.addCell(label);

this my error

this my value table

Check if `tbGudangSales.getValueAt(i, 5) != null` before doing operations on whatever it returns — Mark, Jan 15 '19 at 12:06
Put this condition too in your if loop `if (tbGudangSales.getValueAt(i, 5) == null || tbGudangSales.getValueAt(i, 5).toString().trim().length() == 0) {` — Pushpesh Kumar Rajwanshi, Jan 15 '19 at 12:07

score 0 · Accepted Answer · answered Jan 15 '19 at 12:13

0

All you need to do is to check if the value is null. For example:

Object value = tbGudangSales.getValueAt(i, 5);

if (value != null)
{
    if(value.toString().trim().isEmpty()) // instead checking the length "manually", you can use the isEmpty() method
    {
        status = "tidak ada penjualan";
    } 
    else
    {
        status = value.toString();
    }
}

answered Jan 15 '19 at 12:13

kAliert

768
9
21

thx for your help – Steven Wiaji Jan 15 '19 at 13:45

how to check jTable nullpointer in row

1 Answers1