import java.awt.Dimension;
import java.io.File;
import
java.io.FileReader;
import java.util.ArrayList;
import
java.util.List;
import javax.swing.JFrame;
import
javax.swing.JPanel;
import javax.swing.JScrollPane;
import
javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import
javax.swing.table.TableModel;
public class CopyOfTest extends JPanel implements Runnable {
TableModel dataModel;
JScrollPane scrollpane;
JTable
table;
public CopyOfTest() {
dataModel =
getTableModel();
table = new JTable(dataModel);
scrollpane = new
JScrollPane(table);
this.add(scrollpane);
}
//读取外部文件，每一行当做一条字符串存入List中
public List<String> getData()
{
FileReader fr;
File file = new File(
"E:/my.txt");
int
b;
StringBuffer sb = new StringBuffer();
List<String> s = new
ArrayList<String>();
try {
fr = new
FileReader(file);
while ((b = fr.read()) != -1) {
if (b != ‘\r‘)
{
sb.append((char) b);
}
if (b == ‘\n‘)
{
s.add(sb.toString());
sb = new
StringBuffer();
}
}
fr.close();
} catch (Exception e)
{
e.printStackTrace();
}
return s;
}
//使用public
List<String> getData()
方法得到的List构建数据模型
//此处使用的外部文件中，每一行的字符串用空格分成四个部分
//例如，其中一行为：2013-03-18
11:50:55 传感器1 报警，对应表格的一行
public AbstractTableModel getTableModel()
{
return new AbstractTableModel() {
public int getColumnCount()
{
return 4;
}
public int getRowCount() {
return
getData().size();
}
public Object getValueAt(int row, int col)
{
switch (col) {
case (0): {
return row +
1;
}
case (1): {
return getData().get(row).split(" ",
0)[0];
}
case (2): {
return getData().get(row).split(" ",
0)[1];
}
default:
return getData().get(row).split(" ",
0)[2];
}
}
};
}
public void run() {
while
(true)
{
//每隔1秒钟更新JTable
table.validate();
table.updateUI();
try
{
Thread.sleep(1000);
} catch (InterruptedException e)
{
e.printStackTrace();
}
}
}
public static void
main(String[] g) {
JFrame frame = new JFrame();
CopyOfTest t = new
CopyOfTest();
frame.add(t);
frame.setSize(new Dimension(400,
400));
frame.setVisible(true);
new
Thread(t).start();
}
}