Exploit Serialization To Perform Deep Copy

The clone() method of java.lang.Object class makes a shallow copy of anobject i.e. a copy that excludes the objects that the to-be-cloned object contains. Therefore, to produce a deep copy of your complex objects, you have to write your own clone() method so that you take care of copying every contained object. This, depending on the complexity of your objects, may entail a lot of code. Java’s serialization mechanism provides a neat workaround to this situation.

To take advantage of serialization, you have to ensure that your objects and all their contained objects are serializable. The following code demonstrates deep copy via serialization:

 public class DeepCopyMaker {             private DeepCopyMaker()	{		//I made constructor private so that DeepCopyMaker could notbe created	}                         static public Object makeDeepCopy(Object obj2DeepCopy) throwsException             { 		//obj2DeepCopy must be serializable             	ObjectOutputStream outStream = null;                         ObjectInputStream inStream = null;                         try                         { 			ByteArrayOutputStream byteOut = 	                                    new ByteArrayOutputStream();                                     outStream = newObjectOutputStream(byteOut);                                     // serialize and write obj2DeepCopy tobyteOut                                    outStream.writeObject(obj2DeepCopy); 			//always flush your stream                                    outStream.flush();                                     ByteArrayInputStream byteIn =      	                               newByteArrayInputStream(byteOut.toByteArray());                                    inStream = newObjectInputStream(byteIn);                                     // read the serialized, and deep copied,object and return it                                     return inStream.readObject(); 		}                         catch(Exception e)                         {                         	//handle the exception			//it is not a bad idea to throw the exception, sothat the caller of the 			//method knows something went wrong			throw(e);                         }                          finally                          { 			//always close your streams in finally clauses                          	outStream.close();                                     inStream.close();                           } 	} } 
Share the Post:
Share on facebook
Share on twitter
Share on linkedin

Overview

The Latest

iOS app development

The Future of iOS App Development: Trends to Watch

When it launched in 2008, the Apple App Store only had 500 apps available. By the first quarter of 2022, the store had about 2.18 million iOS-exclusive apps. Average monthly app releases for the platform reached 34,000 in the first half of 2022, indicating rapid growth in iOS app development.

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a