getting value from JTable to an array

Question

Hey I was trying to get the values from a JTable to an array and then print it. I seems like it is actually taking the adress of something instead of taking the value. I don't understand why. Here is my code:

public Object[][] getTableData (JTable table) {
    DefaultTableModel dtm = (DefaultTableModel) table.getModel();
    int nRow = dtm.getRowCount();
    int nCol = dtm.getColumnCount();
    Object[][] tableData = new Object[nRow][nCol];
    for (int i = 0 ; i < nRow ; i++){
        for (int j = 0; j < nCol ; j++)
        tableData[i][j] = dtm.getValueAt(i,j);
    }
    System.out.println(Arrays.asList(tableData));
    return tableData;
}

Ihraz · Accepted Answer · 2014-11-20 06:17:26Z

3

DefaultTableModel model = new javax.swing.table.DefaultTableModel();

    model.addColumn("Col1");
    model.addColumn("Col2");

    model.addRow(new Object[]{"1", "v2"});
    model.addRow(new Object[]{"2", "v2"});

    List<String> numdata = new ArrayList<String>();
    for (int count = 0; count < model.getRowCount(); count++){
          numdata.add(model.getValueAt(count, 0).toString());
    }

    System.out.println(numdata);

try this

answered Nov 20, 2014 at 6:17

Ihraz

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1 Comment

Ihraz Over a year ago

you can get a clue for your problem

Super deamon · Accepted Answer · 2014-11-20 05:59:10Z

0

you have to use System.out.println(Array.toString(//your code here));

answered Nov 20, 2014 at 5:59

Super deamon

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5 Comments

Super deamon Over a year ago

otherwise as you've encountered it prints a memory location instead of the visual value

Tuytuy Over a year ago

thanks but i still get the same thing; I get this "[[Ljava.lang.Object;@6f434304]"

Super deamon Over a year ago

well now that i think of it you have a println and a return method for Public Object try deleting the return method and see what happens (p.s it might help future awnserers if you include a bit of the main where you call public object

Tuytuy Over a year ago

I did it but it does not work, I dont see how deleting the return would do anything since the println is just before it.

Super deamon Over a year ago

well I'm stumped now to my best guess right now is that your not calling this method correctly in the main try going through the main and checking for tiny logic errors like 1/0 or stuff like that.

Ihraz · Accepted Answer · 2014-11-20 06:08:43Z

0

List< Object> list = new ArrayList< Object>();

for (int i = 0 ; i < nRow ; i++){

    for (int j = 0; j < nCol ; j++)
     list.add(dtm.getValueAt(i,j).toString());

}

answered Nov 20, 2014 at 6:08

Ihraz

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1 Comment

Tuytuy Over a year ago

i get a error as well: at components.CompleteListeFrame.getTableData(CompleteListeFrame.java:301)

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