Question

我想在JTable中动态添加行，并为此编写了以下代码：

    tblTaskList = new JTable();
    tblTaskList.setShowVerticalLines(false);
    tblTaskList.setCellSelectionEnabled(true);
    tblTaskList.setColumnSelectionAllowed(true);
    tblTaskList.setBorder(new LineBorder(null));
    for (int count = 1; count <= 10; count++) {
        tblTaskList.setModel(new DefaultTableModel(new Object[][] { {
                count, "title1", "start", "stop", "pause", "status" }, },
                new String[] { "status", "Task Title", "Start", "Stop",
                        "Pause", "Status" }));
    }
    tblTaskList.getColumnModel().getColumn(0).setPreferredWidth(31);
    tblTaskList.getColumnModel().getColumn(1).setPreferredWidth(346);
    tblTaskList.getColumnModel().getColumn(2).setPreferredWidth(33);
    tblTaskList.getColumnModel().getColumn(3).setPreferredWidth(31);
    tblTaskList.getColumnModel().getColumn(4).setPreferredWidth(28);

    tblTaskList.setBounds(93, 34, 614, 160);
    frmTaskList.getContentPane().add(tblTaskList);

问题是只添加了最后一行，即计数打印第一列中的值10，任何人都可以解释如何解决问题吗？

Answer 1

 // create object of table and table model
 JTable tbl = new JTable();
 DefaultTableModel dtm = new DefaultTableModel(0, 0);

// add header of the table
String header[] = new String[] { "Prority", "Task Title", "Start",
            "Pause", "Stop", "Statulses" };

// add header in table model     
 dtm.setColumnIdentifiers(header);
  　//set model into the table object
       tbl.setModel(dtm);

     // add row dynamically into the table      
for (int count = 1; count <= 30; count++) {
        dtm.addRow(new Object[] { "data", "data", "data",
                "data", "data", "data" });
 }

Answer 2

在循环中，您始终将新TableModel设置为JTabel。而不是你需要创建一个模型实例，然后添加行。使用下一个代码：

DefaultTableModel model = new DefaultTableModel(new String[] { "status", "Task Title", "Start", "Stop", "Pause", "Status" },0);
tblTaskList.setModel(model);
for (int count = 1; count <= 10; count++) {
     model.addRow(new Object[]{ count, "title1", "start", "stop", "pause", "status" });
}

而不是：

for (int count = 1; count <= 10; count++) {
    tblTaskList.setModel(new DefaultTableModel(new Object[][] { {
            count, "title1", "start", "stop", "pause", "status" }, },
            new String[] { "status", "Task Title", "Start", "Stop",
                    "Pause", "Status" }));
}

Answer 3

我也找到了一个解决方案，它成功运行

    DefaultTableModel dm = new DefaultTableModel(0, 0);
    String header[] = new String[] { "Status", "Task Title", "Start",
            "Pause", "Stop", "Statulses" };
    dm.setColumnIdentifiers(header);
    tblTaskList.setModel(dm);

    for (int count = 1; count <= 10; count++) {
        Vector<Object> data = new Vector<Object>();
        data.add(count);
        data.add("Project Title" + count);
        data.add("Start");
        data.add("Stop");
        data.add("Pause");
        data.add("Status");
        System.out.println("test :- " + count);
        dm.addRow(data);
    }

Answer 4

 DefaultTableModel model ;
    /** Creates new form DynRowAdd */
    public DynRowAdd() {
        initComponents();
          model = new DefaultTableModel();
                    jTable1.setModel(model);
                    model.addColumn("Id");
                    model.addColumn("First Name");
                    model.addColumn("Last Name");
                    model.addColumn("Company Name");
    }
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         

        model.addRow(new Object[]{jTextField1.getText(), jTextField2.getText(),jTextField3.getText(),jTextField4.getText()});

    }

如何在JTable中动态添加行

4 个答案: