我在列标题上编写了动作侦听器,允许用户重命名所选列并添加新列。
重命名列的代码 -
int column = jTable1.getSelectedColumn();
if (column == -1) {
return;
}
boolean blag = true;
String sColumnName = null;
while (blag) {
sColumnName = (String) JOptionPane.showInputDialog(jTable1, "Enter Column Name", "Add Column", JOptionPane.INFORMATION_MESSAGE, null, null, null);
if (sColumnName == null) {
return;
}
if (sColumnName.trim().equalsIgnoreCase("")) {
JOptionPane.showMessageDialog(jTable1, "Column name can not be blank.");
blag = true;
} else {
blag = false;
}
}
int viewColumn = jTable1.convertColumnIndexToView(column);
TableColumn tableColumn = jTable1.getColumnModel().getColumn(viewColumn);
tableColumn.setHeaderValue(sColumnName);
jTable1.getTableHeader().repaint();
在JTable中添加新列的代码。
boolean blag = true;
String sColumnName = null;
while (blag) {
sColumnName = (String) JOptionPane.showInputDialog(jTable1, "Enter Column Name", "Add Column", JOptionPane.INFORMATION_MESSAGE, null, null, null);
if (sColumnName == null) {
return;
}
if (sColumnName.trim().equalsIgnoreCase("")) {
JOptionPane.showMessageDialog(jTable1, "Column name can not be blank.");
blag = true;
} else {
blag = false;
}
}
defaultTableModel.addColumn(sColumnName);
但问题是当我重命名列然后添加新列时,会添加一个新列,但它会显示刚重命名的列的旧名称。
如何将默认表格模型与表格标题同步?
答案 0 :(得分:3)
在Default / TableModel上没有重命名标头的API。选项是子类/实现自定义模型或欺骗默认值,如下所示(伪代码):
Object[] headers = new Object[tableModel.getColumnCount()];
forEach (model-column)
if (index == renamedColumn)
headers[index] = newHeader
else
headers[index] = tableModel.getColumnName(index)
tableModel.setColumnIdentifiers(headers)
(注意:假定标识符与名称相同)