Extend the selection to include all cells (5,3) : Table Selection « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. Table Selection

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

public class Main {
  public static void main(String[] argv) throws Exception {
    int rows = 10;
    int cols = 5;
    JTable table = new JTable(rows, cols);

    table.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);

    table.setColumnSelectionAllowed(true);
    table.setRowSelectionAllowed(true);

    int row = 5;
    int col = 3;
    boolean toggle = false;
    boolean extend = true;
    table.changeSelection(row, col, toggle, extend);

  }
}