I am getting ava.lang.OutOfMemoryError: Java heap space during the Serialization... any clues?

[malikchagani]

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
at com.twitter.serial.stream.bytebuffer.ByteBufferSerializerOutput.ensureCapacity(ByteBufferSerializerOutput.java:244)
at com.twitter.serial.stream.bytebuffer.ByteBufferSerializerOutput.encodeString(ByteBufferSerializerOutput.java:264)
at com.twitter.serial.stream.bytebuffer.ByteBufferSerializerOutput.writeString(ByteBufferSerializerOutput.java:152)
at com.twitter.serial.stream.bytebuffer.ByteBufferSerializerOutput.writeString(ByteBufferSerializerOutput.java:33)
at com.irteqa.db.model.TripData$TripDataSerializer.serializeObject(TripData.java:46)
at com.irteqa.db.model.TripData$TripDataSerializer.serializeObject(TripData.java:31)
at com.twitter.serial.serializer.ObjectSerializer.serialize(ObjectSerializer.java:68)
at com.twitter.serial.serializer.CollectionSerializers.serializeList(CollectionSerializers.java:119)
at com.twitter.serial.serializer.CollectionSerializers.access$000(CollectionSerializers.java:38)
at com.twitter.serial.serializer.CollectionSerializers$1.serializeObject(CollectionSerializers.java:50)
at com.twitter.serial.serializer.CollectionSerializers$1.serializeObject(CollectionSerializers.java:46)
at com.twitter.serial.serializer.ObjectSerializer.serialize(ObjectSerializer.java:68)
at com.twitter.serial.serializer.CollectionSerializers.serializeMap(CollectionSerializers.java:173)
at com.twitter.serial.serializer.CollectionSerializers.access$400(CollectionSerializers.java:38)
at com.twitter.serial.serializer.CollectionSerializers$3.serializeObject(CollectionSerializers.java:100)
at com.twitter.serial.serializer.CollectionSerializers$3.serializeObject(CollectionSerializers.java:95)
at com.twitter.serial.serializer.ObjectSerializer.serialize(ObjectSerializer.java:68)
at com.twitter.serial.stream.SerializerOutput.writeObject(SerializerOutput.java:57)

[AasheeshLikePanner]

This is the following reasons java throws the OutOfMemoryError.

1. Poor programming approach: The object could not be possible allocated in Heap memory. The application holds the many references of objects, Which preventing the object from being garbage collected.
2. Leakage in Memory: because of poor Programming approach. The program is using a high amount of memory, Which leads to the OutOfMemory error.
3. Excessive use of finalizers: If in an application, a class is having a finalize method, then objects of such type are not able to obtain their space at the time of Garbage Collection (GC), and after Garbage Collection, these objects are kept in a queue for finalization later.