[JAVA] Serializzazione di un oggetto

[tcc]

Salve. Ho un problema nella serializzazione di un oggetto.

public char[] ObjToChar(Object obj){
		char[] arr = null;
		if (obj instanceof SimLogonMessage) {
			SimLogonMessage sim = (SimLogonMessage)obj;
			ByteArrayOutputStream b = new ByteArrayOutputStream();		 
			ObjectOutputStream oos;
			try {
				oos = new ObjectOutputStream(b);				
				oos.writeObject(sim);
				oos.flush();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}		 
			byte[] serializedBytes = b.toByteArray();
			 arr = new char[serializedBytes.length];
			for (int i = 0; i < serializedBytes.length; i++) {
				arr[i] = (char) serializedBytes[i]; 
			}
		}
		
		
		
		return arr;		
	}

La mia classe SimLogonMessage implements Serializable.
Mi dà questa eccezione:

SimDispatcherXML] received message with id: ACGMESSAGETYPE_ACMSENDVCI
java.io.NotSerializableException: sim.aiftypes.types.common.AcgLatLon
	at java.io.ObjectOutputStream.writeObject0(Unknown Source)
	at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
	at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
	at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
	at java.io.ObjectOutputStream.writeObject0(Unknown Source)
	at java.io.ObjectOutputStream.writeObject(Unknown Source)
	at sim.aiftypes.types.dll.MessageLogon.ObjToChar(MessageLogon.java:147)
	at sim.aiftypes.types.dll.MessageLogon.<init>(MessageLogon.java:42)
	at sim.gui.panel.SimDllMsgOutPanel.getAcgDllGetLogonReturn(SimDllMsgOutPanel.java:754)
	at sim.gui.panel.DllMessageOutButtonActionListener.actionPerformed(DllMessageOutButtonActionListener.java:48)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)

Sto sbattendo la testa non capisco, qual'è il problema???

[tcc]

Risolto per adesso. Ho dimenticato di rendere le classi richiamate serializzabili