【发布时间】：2016-07-30 22:49:23
【问题描述】：
在开发小型任务管理器时，我注意到列的排序不正确。为了放弃我的程序的问题，我创建了一个最小版本，但它仍然无法正确排序唯一列。
import java.awt.BorderLayout;
import java.util.List;
import java.util.Random;
import javax.swing.*;
import javax.swing.table.AbstractTableModel;
public class TableSortTest extends JFrame
{
private final JTable table;
private final ATableModel model;
public TableSortTest ()
{
setDefaultCloseOperation (EXIT_ON_CLOSE);
setSize (1366, 768);
setLocationRelativeTo (null);
model = new ATableModel ();
table = new JTable ();
table.setFillsViewportHeight (true);
table.setAutoCreateRowSorter (true);
table.setModel (model);
add (new JScrollPane (table), BorderLayout.CENTER);
setVisible (true);
Worker worker = new Worker ();
worker.execute ();
}
private class Pair
{
int index;
int value;
}
private class Worker extends SwingWorker <Void, Pair>
{
@Override
protected Void doInBackground ()
{
while (!isCancelled ())
{
Random r = new Random ();
for (int i = 0; i < 100; i++)
{
int indice = getIndexInRange (0, 99);
Pair p = new Pair ();
p.index = indice;
p.value = Math.abs (r.nextInt ());
publish (p);
}
try
{
Thread.sleep (1000);
}
catch (InterruptedException ie)
{
ie.printStackTrace ();
}
}
return null;
}
@Override
public void process (List <Pair> items)
{
for (Pair p : items)
{
model.setValueAt (p.value, p.index, 0);
}
}
}
public static int getIndexInRange (int min, int max)
{
return (min + (int) (Math.random () * ((max - min) + 1)));
}
private class ATableModel extends AbstractTableModel
{
private final Integer [] data;
public ATableModel ()
{
data = new Integer [100];
Random r = new Random ();
for (int i = 0; i < 100; i++)
{
data [i] = Math.abs (r.nextInt ());
}
}
@Override
public int getColumnCount ()
{
return 1;
}
@Override
public int getRowCount ()
{
return data.length;
}
@Override
public Object getValueAt (int rowIndex, int columnIndex)
{
return data [rowIndex];
}
@Override
public void setValueAt (Object value, int rowIndex, int columnIndex)
{
data [rowIndex] = (Integer) value;
fireTableRowUpdated (rowIndex, columnIndex);
}
@Override
public Class getColumnClass (int columnIndex)
{
return Integer.class;
}
@Override
public String getColumnName (int col)
{
return "Column";
}
}
public static final void main (String [] args)
{
SwingUtilities.invokeLater (() ->
{
try
{
new TableSortTest ();
}
catch (Exception e)
{
e.printStackTrace ();
}
});
}
}
我尝试使用 ScheduledExecutorService + Runnable 和 Timer + TimerTask 只是为了测试它是否是线程问题，但行为是相同的。我还阅读了有关该主题的 Java 教程页面。鉴于我的表只使用标准类型，我认为一个简单的 table.setAutoCreateRowSorter (true); 应该可以完成这项工作，不是吗？
不应该在每次修改/添加/删除甚至被触发后对表格进行排序吗？
【问题讨论】：
标签： java swing sorting jtable integer