Before this problem did not arise, I do not understand what to do. Initially, the table has only headers, but after adding a record, only an empty table remains.

Code:

public NewJFrame() { initComponents(); DefaultTableModel d = new DefaultTableModel(); d.addRow(new Object[] {1, 2}); jTable1.setModel(d); }

    1 answer 1

    Try

     DefaultTableModel d = new DefaultTableModel(0 /*rowCount*/, 2 /*columnCount*/);

    so or

     DefaultTableModel d = new DefaultTableModel(); d.addColumn("First row head"); d.addColumn("Second row head");
    • And what exactly does this code do? More precisely, what are the parameters in brackets? - Sergey1991
    • @ Sergey1991: there are even comments there :) the number of rows and columns. - VladD
    • @ Sergey1991: here should be useful: docs.oracle.com/javase/7/docs/api/javax/swing/table/… - VladD
    • Well, I already have headers, why add them again? - Sergey1991
    • @ Sergey1991: well, so do not add, if not necessary. ;-) I didn't see them in your code, so I wrote them. Use the first option if there are headers. - VladD