Listening for subtable creation

Java

package networktablesdesktopclient;

import edu.wpi.first.networktables.NetworkTable;
import edu.wpi.first.networktables.NetworkTableInstance;

public class SubTableListenerExample {

   public static void main(String[] args) {
      new SubTableListenerExample().run();
   }

   public void run() {
      NetworkTableInstance inst = NetworkTableInstance.getDefault();
      NetworkTable table = inst.getTable("datatable");
      inst.startClientTeam(190);

      table.addSubTableListener((parent, name, table) -> {
         System.out.println("Parent: " + parent + " Name: " + name);
      }, false);

      try {
         Thread.sleep(100000);
      } catch (InterruptedException ex) {
         System.out.println("Interrupted!");
      }
   }
}

In this example a listener is defined that listens for creation of subtables one level down from the listener. That is subtables with the key “/datatable/<any-table-name>”. This will fire the callback for each existing subtable, then continue to listen for new subtables created immediately below “datatable” in this case.