JavaJTable标题突然更改了它的列名
我设计的jtable如下:
当我编译Java GUI Netbeans程序时,它没有问题:
但当我按下一个JButton(我使用此代码上载excel)后:
private void b_browseActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int column, row;
JFileChooser chooser = new JFileChooser();
chooser.showOpenDialog(this);
File file = chooser.getSelectedFile();
chooser.setFileFilter(new FileNameExtensionFilter("Excel File", "xls"));
String al = file.getAbsolutePath();
File excelFile = new File(al);
if(!file.getName().endsWith("xls")){
JOptionPane.showMessageDialog(null,
"Pilih file Excel (.xls) saja!",
"Error",JOptionPane.ERROR_MESSAGE);
}
else
{
if (excelFile.exists()) {
try {
Workbook workbook = Workbook.getWorkbook(excelFile);
Sheet sheet = workbook.getSheets()[0];
TableModel model = new DefaultTableModel(sheet.getRows(), sheet.getColumns());
DefaultTableModel model2 = new DefaultTableModel(null, JdlTabel);
for (row = 0; row < sheet.getRows(); row++) {
for ( column = 0; column < sheet.getColumns(); column++) {
String content = sheet.getCell(column, row).getContents();
model.setValueAt(content, row, column);
data[row][column]=Double.parseDouble(content);
n_data = sheet.getRows();
k_data = sheet.getColumns();
}
}
j_latih.setModel(model2);
j_latih.setModel(model); //input data to Jtable
} catch (Exception e) {
JOptionPane.showMessageDialog(null, "Error : " + e);
e.printStackTrace();
}
} else {
JOptionPane.showMessageDialog(null, "There is no data!"); }
}
cek_kmeans=0;
cek_data=1;//control tombol
}
突然,表列名称更改如下:
那么,怎么了?我该如何解决这个问题
# 1 楼答案
在重新创建表模型时,可以为列标题指定“null”。因此使用默认标题
解决办法是:
DefaultTableModel. Then you use the
addRow(…)的setRowCount(0)
从当前模型中删除所有行method of the
DefaultTableModel`一次将数据加载回模型中一行李>