Android Parcelable Vs Serializable

Java Serializable:
Serializable comes from standard Java and is much easier to implement all you need to do is implement the Serializable interface and add override two methods.

private void writeObject(java.io.ObjectOutputStream out)
    throws IOException
private void readObject(java.io.ObjectInputStream in)
    throws IOException, ClassNotFoundException

The problem with Serializable is that it tries to appropriately handle everything under the sun and uses a lot reflection to make determine the types that are being serialized. So it becomes a beefy Object.


Androids Parcelable: 
Android Inter-Process Communication (AIPC) file to tell Android how is should marshal and unmarshal your object.It is less generic and doesn't use reflection so it should have much less overhead and be a lot faster.

public class MyParcelable implements Parcelable {
     private int mData;

     public int describeContents() {
         return 0;
     }

     public void writeToParcel(Parcel out, int flags) {
         out.writeInt(mData);
     }
     public static final Parcelable.Creator<MyParcelable> CREATOR
             = new Parcelable.Creator<MyParcelable>() {
         public MyParcelable createFromParcel(Parcel in) {
             return new MyParcelable(in);
         }

         public MyParcelable[] newArray(int size) {
             return new MyParcelable[size];
         }
     };
     
     private MyParcelable(Parcel in) {
         mData = in.readInt();
     }
 }