Easy way to get the data from selected columns in JTable

I have a JTable and 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.

I'm trying to do this by MouseListener, but I can get only the clicked cells, not the entire column.


You need JTable.getSelectedColumns(), but it returns the selected column indexes, so you need to access the TableModel (package 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();

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