Using enum in remote object

Greenhorn

Posts: 3

posted 18 years ago

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Hello folks,

i do have a class where i use fields of type enum and get a java.io.NotSerializableException.
As all the other fields are of a simple type (int, etc), i don't know, why this class isn't serializeable/remoteable. Maybe the enum is the problem.
The class 'NoteImpl' is transfered between a client and a server using RMI. The class 'Note' is the interface, containing all method definitions, which is required for Java-RMI.

Does anybody know what the problem is?

Thanks in advance
Benedikt

My class:

import java.rmi.RemoteException;
 
public class NoteImpl implements Note {
/**
 * Contains all notes. 
 */
public static enum NOTE {C, D, E, F, G, A, H}
 
/**
 * Contains the possible modifiers of this MidiPlayer. 
 */
public static enum MODIFIER {NONE, CROSS, B};

/**
 * Contains the possible octaves of this MidiPlayer. 
 */
public static enum OCTAVE {SMALL, SINGLETAGGED, DOUBLETAGGED};

/**
 * The note in the note scale.
 */
private NOTE note;

/**
 * Modifier of this note.
 */
private MODIFIER modifier;

/**
 * Ovatve of this note.
 */
private OCTAVE octave;

/**
 * Note-number of this note for playback in a midi-system.
 */
private int noteNumber;

/**
 * Creates a new <code>Note</code> with the default-values
 * note = C, modifier = none, octave = small, note-number = 0.
 */
public NoteImpl() throws RemoteException {
this(NOTE.C, MODIFIER.NONE, OCTAVE.SMALL, 0);
}

/**
 * Creates a new <code>Note</code> with the given parameters.
 * @param note <code>Note</code> in the note scale.
 * @param modifier <code>Modifier</code> of this note.
 * @param octave <code>Octave</code> of this note.
 * @param noteNumber Notenumber of this note.
 */
public NoteImpl(NOTE note, MODIFIER modifier, OCTAVE octave, int noteNumber) throws RemoteException {
this.note = note;
this.modifier = modifier;
this.octave = octave;
this.noteNumber = noteNumber;
}
 
/**
 * @return Returns the modifier.
 */
public MODIFIER getModifier() throws RemoteException {
return modifier;
}
 
/**
 * @param modifier The modifier to set.
 */
public void setModifier(MODIFIER modifier) throws RemoteException {
this.modifier = modifier;
}
 
/**
 * @return Returns the note.
 */
public NOTE getNote() throws RemoteException {
return note;
}
 
/**
 * @param note The note to set.
 */
public void setNote(NOTE note) throws RemoteException {
this.note = note;
}
 
/**
 * @return Returns the octave.
 */
public OCTAVE getOctave() throws RemoteException {
return octave;
}
 
/**
 * @param octave The octave to set.
 */
public void setOctave(OCTAVE octave) throws RemoteException {
this.octave = octave;
}
 
/**
 * @return Returns the noteNumber.
 */
public int getNoteNumber() throws RemoteException {
return noteNumber;
}
 
/**
 * @param noteNumber The noteNumber to set.
 */
public void setNoteNumber(int noteNumber) throws RemoteException {
this.noteNumber = noteNumber;
}
 
}

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