Objectoutputstream write array

As per my experience Java Serialization is quite an important topic in any core Java interview, In almost all the interview I have faced there are one or two Java serialization questions and I have seen an interview where after few question on serialization candidate start feeling uncomfortable because of lack of experience in this area.

What is Marker interfaces in Java and why required Marker interface in Java is interfaces with no field or methods or in simple word empty interface in java is called marker interface. Example of market interface is Serializable, Clonnable and Remote interface. Now if marker interface doesn't have any field or method or behavior they why would Java needs it?

This was asked to my friend in one of his core java interview and then I thought to touch based on it. In this article we will see couple of reason on what marker interface do in Java and what is use of marker interface in Java. Marker interface are also called tag interface in Java.

Same is true for RMI and Remote interface. This is pretty standard answer of question about marker interface and once you give this answer most of the time interviewee definitely asked "Why this indication can not be done using a flag inside a class?

Declaration

Yes this can be done by using a boolean flag or a String but doesn't marking a class like Serializable or Clonnable makes it more readable and it also allows to take advantage of Polymorphism in Java.

One can also develop his own marker interface. Marker interface is a good way to classify code. You can create marker interface to logically divide your code and if you have your own tool than you can perform some pre-processing operation on those classes.

After introduction of Annotation on Java5, Annotation is better choice than marker interface and JUnit is a perfect example of using Annotation e. Test for specifying a Test Class.

Same can also be achieved by using Test marker interface. Another use of marker interface in Java One more use of marker interface in Java can be commenting. Marker interface can also help code coverage or code review tool to find bugs based on specified behavior of marker interfaces.

Again Annotations are better choice ThreadSafe looks lot better than implementing ThraedSafe marker interface. In summary marker interface in Java is used to indicate something to compiler, JVM or any other tool but Annotation is better way of doing same thing.Jan 02,  · Marker interface in Java is interfaces with no field or methods or in simple word empty interface in java is called marker ashio-midori.come of market interface is Serializable, Clonnable and Remote interface.

Now if marker interface doesn't have any field or method or behavior they why would Java needs it? Jan 10,  · In my previous article Java Cloning and Types of Cloning (Shallow and Deep) in Details with Example, I have discussed Java Cloning in details and answered questions about how we can use cloning to copy objects in Java, what are two different types of cloning (Shallow & Deep) and how we can implement both of them, if you .

Java Platform, Standard Edition (Java SE) is a computing platform for development and deployment of portable code for desktop and server environments.

Java SE was formerly known as Java 2 Platform, Standard Edition (J2SE).. The platform uses Java programming language and is part of the Java software-platform family. Java SE defines a range of general-purpose APIs—such as Java APIs for .

Introduction

Jan 02,  · Marker interface in Java is interfaces with no field or methods or in simple word empty interface in java is called marker ashio-midori.come of market interface is Serializable, Clonnable and Remote interface.

Now if marker interface doesn't have any .

Once returned, if the class is not an array class, its serialVersionUID is compared to the serialVersionUID of the serialized class, the annotateProxyClass method in the corresponding subclass of ObjectOutputStream must write any data or objects read by this method.

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