从数据库把数据写入NetBeans表格中

显示到表中

 ArrayList resultlist = Dao.Showuesr();

        DefaultTableModel dtm = (DefaultTableModel) jTable1.getModel();

        for (Iterator i = resultlist.iterator(); i.hasNext();) {

            Vector map = (Vector) i.next();

            dtm.addRow(map);

修改数据

显示 private void jButton1MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton1MouseReleased

        // TODO add your handling code here:

        int row = jTable1.getSelectedRow();

        if (row > -1) {

            String name = jTextField1.getText();

            String password = jTextField2.getText();

            String banji = jTextField3.getText();

            //修改表里的数据

            jTable1.setValueAt(name, row, 0);

            jTable1.setValueAt(password, row, 1);

            jTable1.setValueAt(banji, row, 2);

            //数据库中修改

            //JiushuiMenuInf si = new JiushuiMenuInf(namestr,pricestr);

            Dao.Updateuser(name, password, banji);

        }

  //增加按钮

    private void jButton3MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton3MouseReleased

        // TODO add your handling code here:

        String name = jTextField1.getText();

        String password = jTextField2.getText();

        String banji = jTextField3.getText();

        DefaultTableModel dtm = (DefaultTableModel) jTable1.getModel();

        Vector al = new Vector();

        al.add(name);

        al.add(password);

        al.add(banji);

        dtm.addRow(al);

       //数据库中增加

        Dao.Adduser(name, password, banji);

    }//GEN-LAST:event_jButton3MouseReleased

    //删除按钮

    private void jButton2MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton2MouseReleased

        // TODO add your handling code here:

        DefaultTableModel dtm = (DefaultTableModel) jTable1.getModel();

        int row = jTable1.getSelectedRow();

        System.out.println(row);

        if (row == -1) {

            System.out.println("请先选择需要删除的信息");

            return;

        }

        //界面表中删除数据

        dtm.removeRow(row);

        jTextField1.setText("");

        //数据库中删除该记录

        String name = jTextField1.getText();

        Dao.Deleteuser(name);

    }//GEN-LAST:event_jButton2MouseReleased