我的一些代码如下: 
String[] columnNames = {"Product","Number of Boxes","Price"};
  Object[][] data =
{
         {"Apples", new Integer(5),"5.00"},
         {"Oranges", new Integer(3),"6.00"},
         {"Pears", new Integer(2),"4.00"},
         {"Grapes", new Integer(3),"2.00"},
};
  JTable jTable1 = new JTable(data,columnNames);但是,出现的画面却是这样的!
  
         Apples   5   5.00
         Orange   3   6.00
         Pears    2   4.00
         Grapes   3   2.00
http://wp.mail.163.com/netfolder/servlet/nfapp/GetFile?也就是说没有了columnNames 不知道为什么??