예제

public static class SerializableObject implements Serializable{ synchronized private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException { s.defaultReadObject(); } }

솔루션

readObject()를 synchronized 수정자 없이 선언하십시오. public static class SerializableObject implements Serializable{ private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException { s.defaultReadObject(); } }