Check each cell in the min and max ranges of selected cells : Table Selection « Swing « Java Tutorial

import javax.swing.JTable;
import javax.swing.ListSelectionModel;

public class Main {
  public static void main(String[] argv) throws Exception {
    JTable table = new JTable();

    if (table.getCellSelectionEnabled()) {
      // In the other modes, the set of selected cells can be retrieved using

      // Get the min and max ranges of selected cells
      int rowIndexStart = table.getSelectedRow();
      int rowIndexEnd = table.getSelectionModel().getMaxSelectionIndex();
      int colIndexStart = table.getSelectedColumn();
      int colIndexEnd = table.getColumnModel().getSelectionModel().getMaxSelectionIndex();

      // Check each cell in the range
      for (int r = rowIndexStart; r <= rowIndexEnd; r++) {
        for (int c = colIndexStart; c <= colIndexEnd; c++) {
          if (table.isCellSelected(r, c)) {
            System.out.println("cell is selected"); 

14.65.Table Selection
14.65.1.ListSelectionModel rowSelMod = JTable.getSelectionModel();
14.65.2.ListSelectionModel colSelMod = JTable.getColumnModel().getSelectionModel();
14.65.5.JTable.setColumnSelectionAllowed(boolean b);
14.65.6.JTable.setRowSelectionAllowed(boolean b);
14.65.7.JTable.setCellSelectionEnabled(boolean b);
14.65.8.Handle selection and model change events for a JTable.
14.65.9.Get default selection mode:MULTIPLE_INTERVAL_SELECTION
14.65.10.Allow only single a selection
14.65.11.Allow selection to span one contiguous set of rows, visible columns, or block of cells
14.65.12.Allow multiple selections of rows, visible columns, or cell blocks (default)
14.65.13.Extend the selection to include all cells (5,3)
14.65.14.Deselect a cell: cell (3,2), All cells in the row and column containing (3,2) are deselected.
14.65.15.Row selection is enabled, Get the indices of the selected rows
14.65.16.Get selected row and selected index
14.65.17.Get the min and max ranges of selected cells
14.65.18.Check each cell in the min and max ranges of selected cells
14.65.19.Disabling Selections in a JTable Component
14.65.20.Getting the Anchor Cell in a JTable Component
14.65.21.Toggles the selection state, if it were called again, it exactly reverses the first call.