java 从 JTable 中的选定列获取数据的简单方法
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Easy way to get the data from selected columns in JTable
提问by ArmMiner
I have a JTableand want to get the data from each selected column. The columns are selected by mouse clicks. So, if there are 5 columns selected, the output has to be 5 string arrays.
我有一个JTable并想从每个选定的列中获取数据。通过鼠标点击选择列。因此，如果选择了 5 列，则输出必须是 5 个字符串数组。
I'm trying to do this by MouseListener, but I can get only the clicked cells, not the entire column.
我正在尝试通过 执行此操作MouseListener，但我只能获取单击的单元格，而不是整个列。
回答by johnchen902
You need JTable.getSelectedColumns(), but it returns the selected column indexes, so you need to access the TableModel(package javax.swing.table)
您需要JTable.getSelectedColumns()，但它返回选定的列索引，因此您需要访问TableModel（包javax.swing.table）
int[] columns = jtable.getSelectedColumns();
TableModel model = jtable.getModel();
int rowcount = model.getRowCount();
String[][] output = new String[columns.length][rowcount];
for (int i = 0; i < columns.length; i++)
for (int row = 0; row < rowcount; row++){
int column = jtable.convertColumnIndexToModel(columns[i]);
output[i][row] = model.getValueAt(row, column).toString();
}
