Disable auto resizing to make the JTable horizontal scrollable in Java

To disable auto resizing, you need to use the setAutoResizeMode() method. After that, set the table to AUTO_RESIZE_OFF.

Let’s say the following is our table −

String[][] rec = {
   { "1", "Virat", "840" },
   { "2", "David", "835" },
   { "3", "Shikhar", "656" },
   { "4", "Steve", "530" },
   { "5", "Kane", "515" },
   { "6", "Eion", "509" },
   { "7", "AB de Villiers", "498" },
   { "8", "Quinton", "470" },
   { "9", "Glenn", "410" },
   { "10", "Tom", "360" },
   { "11", "Johnny", "320" },
   { "12", "Shreyas", "280" },
};
String[] header = { "S.NO", "Player", "Runs" }; JTable table = new JTable(rec, header);

Now, disable auto resizing −

table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);

The following is an example to disable auto resizing to make the JTabel horizonatal scrollable −

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.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(), "Total Runs", TitledBorder.CENTER, TitledBorder.TOP));
      String[][] rec = {
         { "1", "Virat", "840" },
         { "2", "David", "835" },
         { "3", "Shikhar", "656" },
         { "4", "Steve", "530" },
         { "5", "Kane", "515" },
         { "6", "Eion", "509" },
         { "7", "AB de Villiers", "498" },
         { "8", "Quinton", "470" },
         { "9", "Glenn", "410" },
         { "10", "Tom", "360" },
         { "11", "Johnny", "320" },
         { "12", "Shreyas", "280" },
      };
      String[] header = { "S.NO", "Player", "Runs" }; JTable table = new JTable(rec, header);
      table.setShowGrid(false);
      table.setShowHorizontalLines(true);
      table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
      table.setGridColor(Color.orange);
      panel.add(new JScrollPane(table));
      frame.add(panel);
      frame.setSize(550, 400);
      frame.setVisible(true);
   }
}

This will produce the following output. Auto resize is off here −

Now, you can drag and resize the table columns −