The readResolve() method allows final tweaks to the state of an object during deserialization. Non-final classes which implement
readResolve(), should not set its visibility to private since it will then be unavailable to child classes.
public class Fruit implements Serializable {
private static final long serialVersionUID = 1;
private Object readResolve() throws ObjectStreamException // Noncompliant
{...}
//...
}
public class Raspberry extends Fruit implements Serializable { // No access to parent's readResolve() method
//...
}
public class Fruit implements Serializable {
private static final long serialVersionUID = 1;
protected Object readResolve() throws ObjectStreamException
{...}
//...
}
public class Raspberry extends Fruit implements Serializable {
//...
}