我正在攀登Java学习曲线，第一次需要一个JTable。我想要的是显示一个空表，所有单元格都是空的，除了列标题。然后，根据用户操作，表格被填充了字符串、整数和浮点数的混合物。
我在网上找到的所有示例都创建在实例化时就被填充的表。有没有简单的方法可以推迟填充表，但在启动时显示它？
提前感谢任何帮助。
创建一个具有指定行数和列数的表模型，并将其用于您的JTable中。例如：
String[] colHeadings = {"COLUMN1","COLUMN2"};
int numRows = 5 ;
DefaultTableModel model = new DefaultTableModel(numRows, colHeadings.length) ;
model.setColumnIdentifiers(colHeadings);
JTable table = new JTable(model);
然后您可以在模型上调用方法以更新值、添加行等。
我希望这是你所期待的......。
这是我为一个旧项目所做的事情。我将所有单元格设置为null，因为我只想要一个4行4列的表格，所以在声明语句中初始化它们很容易。
jTable1.setModel(new DefaultTableModel(
new Object [][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
}, new String [] {"Title 1", "Title 2", "Title 3", "Title 4"}
));
然后要更新行和/或列，请使用以下方法...
jTable1.setValueAt(Object data, int row, int column);
或者对于多行或多列，使用循环。祝你好运。
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