java.lang.ArrayIndexOutOfBoundsException: 0 >= 0 attempting to populate JTable

Question

I\'m subclassing JTable and using a DefaultTableModel to model my table data. The following class sets up the JTable, and adds one row to the model.

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Answer 1

I ran on this issue too (with a JList and a DefaultListModel). Dmitry's answer is right.

However, there is another thing: this exception can also be thrown if you don't modify the model in Swing's Event Dispatch Thread.

Doing the following can help you avoid this exception:

SwingUtilities.invokeLater(new Runnable(){public void run(){
    //Update the model here
}});

http://www.javakb.com/Uwe/Forum.aspx/java-gui/3012/JList-JScrollPane-DefaultListModel-Updating

Answer 2

Another issue might be related when you use RowSorter. When you edit the model RowSorter tries to re-sort the old model. It should be automatically re-created and re-run on each changes of table model.

You can fix it by

tableModel = new DefaultTableModel(data, columnNames);
jTableSentence.setModel(tableModel);
jTableSentence.setRowSorter(new TableRowSorter(tableModel));
jTableSentence.setAutoCreateRowSorter(true);

-Hayri

Answer 3

I was facing this problem because i was adding columns and rows to the JTable not to the model.

best way is this.

Object[][]rows = new Object[ ][ ] { {"a","b"} , {"c","d"} };
Object[]columns = new Object[] {"column1","column2"};
JTable table = new JTable();
table.setModel(new DefaultTableModel(rows,columns));

Answer 4

Dmitry is right, but you simply have to update your model. To do this, add the following to your code:

DefaultTableModel dtm = (DefaultTableModel) table.getModel();
for (int c = 0; c < table.getColumnCount(); c++) {
dtm.addColumn(table.getColumnName(c));
}