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java.io.OptionalDataException: 	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1253)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)	at oracle.lbs.mapcommon.MapResponse.readObject(MapResponse.java:402)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:585)	at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:919)	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1813)	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713)	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)	at oracle.lbs.mapclient.MapViewer.processRawResponse(MapViewer.java:3549)	at oracle.lbs.mapclient.MapViewer.run(MapViewer.java:3284)	at mapGeneration.testMV.main(testMV.java:59)