Java 如何清除 jTable 的内容？
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How to clear contents of a jTable ?
提问by tom
I have a jTable and it's got a table model defined like this:
我有一个 jTable，它有一个如下定义的表模型：
javax.swing.table.TableModel dataModel =
new javax.swing.table.DefaultTableModel(data, columns);
tblCompounds.setModel(dataModel);
Does anyone know how I can clear its contents ? Just so it returns to an empty table ?
有谁知道我如何清除它的内容？就这样它返回到一个空表？
采纳答案by locka
Easiest way:
最简单的方法：
//private TableModel dataModel;
private DefaultTableModel dataModel;
void setModel() {
Vector data = makeData();
Vector columns = makeColumns();
dataModel = new DefaultTableModel(data, columns);
table.setModel(dataModel);
}
void reset() {
dataModel.setRowCount(0);
}
i.e. your reset method tell the model to have 0 rows of data The model will fire the appropriate data change events to the table which will rebuild itself.
即您的重置方法告诉模型有 0 行数据模型将触发适当的数据更改事件到将重建自身的表。
回答by eee
If you mean to remove the content but its cells remain intact, then:
如果您要删除内容但其单元格保持完整，则：
public static void clearTable(final JTable table) {
for (int i = 0; i < table.getRowCount(); i++) {
for(int j = 0; j < table.getColumnCount(); j++) {
table.setValueAt("", i, j);
}
}
}
OK, if you mean to remove all the cells but maintain its headers:
好的，如果您要删除所有单元格但保留其标题：
public static void deleteAllRows(final DefaultTableModel model) {
for( int i = model.getRowCount() - 1; i >= 0; i-- ) {
model.removeRow(i);
}
}
回答by willcodejavaforfood
You have a couple of options:
你有几个选择：
- Create a
new DefaultTableModel(), but remember to re-attach any listeners. - Iterate over the
model.removeRow(index)to remove. - Define your own model that wraps a List/Set and expose the
clearmethod.
- 创建一个
new DefaultTableModel()，但请记住重新附加任何侦听器。 - 迭代
model.removeRow(index)删除。 - 定义您自己的模型来包装 List/Set 并公开该
clear方法。
回答by james.garriss
Another easy answer:
另一个简单的答案：
defaultTableModel.getDataVector().removeAllElements();
回答by Gebreigziabher Abadi
//To clear the Contents of Java JTable
DefaultTableModel dm = (DefaultTableModel) JTable1.getModel();
for (int i = 0; i < dm.getRowCount(); i++) {
for (int j = 0; j < dm.getColumnCount(); j++) {
dm.setValueAt("", i, j);
}
}
回答by Malith
I think you meant that you want to clear all the cells in the jTable and make it just like a new blank jTable. For an example, if your table contains 40 raws, you can do following.
我想你的意思是你想清除 jTable 中的所有单元格，让它就像一个新的空白 jTable。例如，如果您的表包含 40 个原始数据，您可以执行以下操作。
DefaultTableModel model = (DefaultTableModel)this.jTable.getModel();
model.setRowCount(0);
model.setRowCount(40);
回答by Garrett Bates
public void deleteAllRows() {
DefaultTableModel model = (DefaultTableModel) jTable1.getModel();
model.setRowCount(0);
}
回答by Farruh Habibullaev
One of the trivial methods is to use the following option.
一种简单的方法是使用以下选项。
dataModel.setRowCount(0);
dataModel is the model which you would like clear the content on
dataModel 是您想要清除内容的模型
However, it is not optiomal solution.
但是，这不是最佳解决方案。
