how to fix IndexOutOfBoundsException: Index: 4, Size: 4

Question

i have messages error "java.lang.IndexOutOfBoundsException: Index: 4, Size: 4" but every i build and run from begin its normal untill i insert data again i have messages error the same with number index diffrent.... can tell me to fix it ?

 public Barang barang;
public List <Barang> barangs;

public static BarangView getInstanceBarangView() {
    if (barangView == null) {
        barangView = new BarangView();
    }
    return barangView;
}

   public void refreshTable(){
    barangs = App.barangService().getSemuaBarang();
    tabelBarang.setModel(new BarangAbstractTableModel(barangs));
}

    public class BarangTableSelectionListener implements ListSelectionListener{  
        public void valueChanged(ListSelectionEvent e) {
        if(tabelBarang.getSelectedRow()>=0){                       
            barang = barangs.get(tabelBarang.getSelectedRow());
            barang = App.barangService().getBarang(barang.getIdBarang());

            idBarangTerpilih = barang.getIdBarang();            
            System.out.println("nim yang di pilih :"+idBarangTerpilih);
        }
    }
}

and the Error indicates to line barang = barangs.get (tableBarang.getSelectedRow ());

Could you share your full code? Somehow, your barangs list does not have the element you inserted when you try to get selected row — Adem İlhan, Jul 19 '17 at 05:50
getSelectedRow() returns 4 because it has added 4 elements [1...4]. But when you use the get() method, it expects the array indexing from [0...3] — worker_bee, Jul 19 '17 at 05:55
Can you please share the complete code? Where did you insert the elements? — yaswanth, Jul 19 '17 at 06:16
if(barangs.size()> tabelBarang.getSelectedRow()){ barang = barangs.get(tabelBarang.getSelectedRow); } — Ihdina, Jul 19 '17 at 06:18

score -1 · Answer 1 · answered Jul 19 '17 at 05:51

-1

Is it simply an offset by 1 error. Does your getSelectedRow start from index of 1?

answered Jul 19 '17 at 05:51

doddi76

61
3

thank you for your answer, very helpful :) – Satrio Frimansyah Jul 19 '17 at 06:34

score -1 · Accepted Answer · answered Jul 19 '17 at 05:56

-1

Indexing starts from 0 to lenght-1. So if the size of the list is 4 then indexing will be like 0,1,2,3.

So if you want to access the 4th element in list then it is at index 3, not at 4.

answered Jul 19 '17 at 05:56

gaurav sk

46
1
6

thank you for your answer, very helpful :) and i know the mistakee ... – Satrio Frimansyah Jul 19 '17 at 06:35

how to fix IndexOutOfBoundsException: Index: 4, Size: 4

2 Answers2