java - 将表 JTable 中的空单元格读入数组

Question

我需要从表中读取数据 JTable .问题是该表可能包含空单元格。在这种情况下，错误消息是:

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException

如何避免此错误消息？

mdArrivals = new QueryTableModelFS();

tbArrivals = new JTable(mdArrivals);

String STA = mdArrivals.getValueAt(i,1).toString();

Answer 1

检查一下，读取对象mdArrivals.getValueAt(i,1)然后检查是否为空调用 toString

Object value = mdArrivals.getValueAt(i,1);
if (value!=null)
{
    String sta = value.toString();
}