What am I doing wrong in this Serializable attempt

I'm trying to store some objects for future processing in event of network failure. I have an array of NameValuePairs in a Serializeable class... I've eliminated everything else, and still I'm getting a NotSerializeableException... I've never tried to write a Serializeable object to file before... I'm sure I'm doing something stupid, but can't see what it is...

public void store(){
    FileOutputStream fos = null;
    ObjectOutputStream out = null;          
    try {
        Log.d(TAG, "Upload failed, saving file to " + path + "/" + fileName);
        File f = new File(path);
        if(!f.exists()){
            try{
            (new File(path)).mkdirs();
            }catch(Exception e){
                Log.d(TAG, "failed to create directory " + path );
            }
        }
        f = new File(path + "/" + fileName);
        fos = new FileOutputStream(f);
        out = new ObjectOutputStream(fos);
        Parts p = new Parts(parts);
        out.writeObject(p); //THIS IS THE LINE WHERE IT DIES WITH THAT EXCEPTION
        out.flush();
        out.close();
    } catch (IOException e) {
        Log.d(TAG, "FAILED TO SAVE file: " + path + "/" + fileName );
        Log.d(TAG, "error:" + e);
    }   catch(Exception e){     
        Log.d(TAG, "error:" + e);
    }
}

private class Parts implements Serializable{        
    private static final long serialVersionUID = -7603433209073871781L;
    @SuppressWarnings("unused")
    public NameValuePair [] p;
    public Parts(NameValuePair [] parts){
        this.p = 开发者_StackOverflowparts;
    }       
}

An object is serializable if it implements Serializable and all of its non-transient and non-static fields are serializable. Is your NameValuePair serializable?

Follow-up: Looking at the docs, NameValuePair implements Serializable. Also String[] is serializable. What is the exception you're seeing?

You may need default constructor in Parts.