How to make JTable single selectable in Java?

To make JTable single selectable in Java, you need to set the selection mode to be SINGE_SELECTION. Let’s say the following is our table −

String[][] rec = {
   { "001", "Shirts", "40" },
   { "002", "Trousers", "250" },
   { "003", "Jeans", "25" },
   { "004", "Applicances", "90" },
   { "005", "Mobile Phones", "200" },
   { "006", "Hard Disk", "150" },
};
String[] header = { "ID", "Product", "Quantity" };
JTable table = new JTable(rec, header);

Set the selection more to make it single selectable with setSelectionMode() method −

table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

Let us see an example to set the same for our table in Java −

Example

package my;
import java.awt.Color;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.border.TitledBorder;
public class SwingDemo {
   public static void main(String[] args) {
      JFrame frame = new JFrame();
      JPanel panel = new JPanel();
      panel.setBorder(BorderFactory.createTitledBorder(
         BorderFactory.createEtchedBorder(), "Stock", TitledBorder.CENTER, TitledBorder.TOP));
      String[][] rec = {
         { "001", "Shirts", "40" },
         { "002", "Trousers", "250" },
         { "003", "Jeans", "25" },
         { "004", "Applicances", "90" },
         { "005", "Mobile Phones", "200" },
         { "006", "Hard Disk", "150" },
      };
      String[] header = { "ID", "Product", "Quantity" };
      JTable table = new JTable(rec, header);
      table.setShowHorizontalLines(true);
      table.setGridColor(Color.blue);
      // make table single selectable
      table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
      panel.add(new JScrollPane(table));
      frame.add(panel);
      frame.setSize(550, 400);
      frame.setVisible(true);
   }
}

Output