为什么最后一个数据总是为空

Question

I have a problem getting all the data in jtable. The last data that display is always "null" even though i enter data in that cell. Can anyone help me

for (int i = 0; i < model_1.getRowCount(); i++) {

  if (String.valueOf(model_1.getValueAt(i, 0)) != null && !String.valueOf(model_1.getValueAt(i, 0)).isEmpty()) {
    date = String.valueOf(model_1.getValueAt(i, 0));
  }
  if (String.valueOf(model_1.getValueAt(i, 1)) != null && !String.valueOf(model_1.getValueAt(i, 1)).isEmpty()) {
    meal = String.valueOf(model_1.getValueAt(i, 1));
  }
  if (String.valueOf(model_1.getValueAt(i, 2)) != null && !String.valueOf(model_1.getValueAt(i, 2)).isEmpty()) {
    time = String.valueOf(model_1.getValueAt(i, 2));
  }
  if (String.valueOf(model_1.getValueAt(i, 3)) != null && !String.valueOf(model_1.getValueAt(i, 3)).isEmpty()) {
    activity = String.valueOf(model_1.getValueAt(i, 3));
  }
  try {
    System.out.println(date + " " + meal + " " + time + " " + activity);
  }
}

here is my sample output:

2017-10-02 sdfsd 01:30 sdfsdfsf          
2017-10-03 dsfdfs 01:00 null

Answer 1

I guess your jtable is still active so the data hasn't been saved to the model yet.

Try to add this before your code:

if (table.isEditing())
     table.getCellEditor().stopCellEditing();