Get ArrayIndexOutOfBoundsException error when try to display data from jtable to the console

Question

I got ArrayIndexOutOfBoundsException error when I try to display data which put into Vector from Jtable to the console

Here the error:

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 3 >= 3
    at java.util.Vector.elementAt(Unknown Source)
at javax.swing.table.DefaultTableColumnModel.getColumn(Unknown Source)
at sun.swing.SwingUtilities2.convertColumnIndexToModel(Unknown Source)
at javax.swing.JTable.convertColumnIndexToModel(Unknown Source)
at javax.swing.JTable.getValueAt(Unknown Source)

Here the code:

ResultSet dbresultset = sqlstatement.executeQuery("select * from ***);
ResultSetMetaData rsmetadata = dbresultset.getMetaData();       
int numcols = rsmetadata.getColumnCount();    

if(tglbtnAdd.isSelected() == true)
  {  while (dbresultset.next())
     {    Vector<Object> row = new Vector<Object>(numcols);
      for (int i = 1; i <= numcols; i++)
        {
             row.addElement( dbresultset.getObject(i) );
        }
         defaultmodel2.addRow(row );

          }

ArrayList<String> numdata = new ArrayList<String>();
for(int count = 0; count <= table_1.getRowCount(); count++){
        numdata.add(table_1.getValueAt(count, 3).toString());
    }
System.out.println(numdata);

That line actually assumes 4 columns. Indexes count starts at 0. I suspect OP is trying to get the value at 3rd column in which case the right call is table_1.getValueAt(count, 2). — dic19
– dic19, Commented Jan 5, 2014 at 5:31

Josh M · Accepted Answer · 2014-01-05 05:54:49Z

1

for(int count = 0; count <= table_1.getRowCount(); count++)

As mentioned in the comments, indexes range from [0, length). I suspect the problem is that you are using <= instead of <. It should probably look something like:

for(int count = 0; count < table_1.getRowCount(); count++)

answered Jan 5, 2014 at 5:54

Josh M

12k8 gold badges42 silver badges49 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Paul Samsotha Over a year ago

To try and get an object from a ResultSet the "idices" actaully start at 1, that's why the OP is using 1 and <= in the first loop. You're probably right about the second.

Josh M Over a year ago

@peeskillet Fair enough. I shall edit my answer, thanks.

Collectives™ on Stack Overflow

Get ArrayIndexOutOfBoundsException error when try to display data from jtable to the console

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related