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Toggles the selection state, if it were called again, it exactly reverses the first call

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);     boolean toggle = true;     boolean extend = false;     table.changeSelection(1, 3, toggle, extend);   } }