How to get the system signals like "hibernate" by dbus-java?

[Luna Luan]

can anyone help me?

here's a simple test,my question is just How to define the TestSignal to
make sure that when the system get hibernate (or resume,or device
inserted),the  TestSignal handler,"handle" will be executed?

====================================================

package org.freedesktop.dbus;

import org.freedesktop.dbus.exceptions.DBusException;
import org.freedesktop.dbus.test.TestSignalInterface;

public class Test implements DBusSigHandler{

	public void handle(DBusSignal t){
		System.out.println("device inserted!!");
	}

public static void main(String[] args){
	try{
		System.out.println("Create DBus connection!");
		DBusConnection conn = null;
		conn = DBusConnection.getConnection(DBusConnection.SYSTEM);
       	
		try{	
			System.out.println("add Signal Handler!");
			conn.addSigHandler(TestSignalInterface.TestSignal.class,new Test());
		}catch(DBusException DBe){
			System.err.println("failed to add signal handler!"+DBe.getMessage());
		}
	}catch(DBusException DBe){
		System.err.println("failed to create dbus connection"+DBe.getMessage());
       }
	return;
}

}
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