如果只想在JTable上隐藏一列,我使用removeColumn()
方法。但是它会抛出异常。
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 7 >= 7
at java.util.Vector.elementAt(Vector.java:470)
at javax.swing.table.DefaultTableColumnModel.getColumn(DefaultTableColumnModel.java:294)
at javax.swing.plaf.basic.BasicTableHeaderUI.paint(BasicTableHeaderUI.java:648)
我认为,在从视图中删除列之后,如果我修改了模型,那么就会出现此异常。这是因为视图中没有列,而模型正在更新表格吗?
在JTable中隐藏列的最佳方法是什么?而不是将大小设置为0。
编辑:异常并不经常发生。它是一种随机异常。无论如何,以下是代码:
@Override
protected Object doInBackground() throws Exception {
........
resultDTO=//get data from database
tableModel.setDataVector(resultDTO.getAllRows(), tableModel.getColumnNames());
// hide column
table.removeColumn(table.getColumnModel().getColumn(7));
System.out.println("table column count : " + table.getColumnCount());
System.out.println("model column count : " + tableModel.getColumnCount());
........
.........
}
initial result (with out any data in table, at application startup):
table column count : 7
model column count : 8
after populating data (first running of above method):
table column count : 7
model column count : 8
after few times executing :
table column count : 7
model column count : 8
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 7 >= 7
at java.util.Vector.elementAt(Vector.java:470)
at javax.swing.table.DefaultTableColumnModel.getColumn(DefaultTableColumnModel.java:294)
at javax.swing.plaf.basic.BasicTableHeaderUI.paint(BasicTableHeaderUI.java:648)
at javax.swing.plaf.synth.SynthTableHeaderUI.paint(SynthTableHeaderUI.java:173)
有时在首次加载数据时会出现上述异常,有时则没有。