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About Me

Hello, I am Naresh Joshi and I welcome you to Java By Source. Java By Source is a friend to Java programming and Java related technologies and frameworks like Spring, Hibernate, Struts, Web Services, Micro Services, Design Patterns, Multithreading, Collection, XML, SQL.


I love to create my own thoughts about anything which comes to my notice and I think we should always have our own thinking on everything rather than just following what others think.

That’s why I have started writing this blog to keep all my research notes and my thoughts regarding Java programming language in one place and make them available to others.

Thanks for visiting Java By Source and I hope you enjoyed the posts. Any kind of feedback is always welcomed and appreciated. You can submit any query or suggestion in the Contact Us box (Bottom Right). You can also reach me on LinkedIn or Facebook or Github.

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Popular posts from this blog

What is Variable Shadowing and Hiding in Java

Java allows us to declare a variable whenever we need it, We can categorize all our variables into 3 categories which have different-different scopes Instance Variables - Defined inside a class and have object level scope. Class Variables - Defined inside a class with static keyword, have class level scope common to all objects of the same class Local Variables - Defined inside a method or in any conditional block, have the block-level scope and only accessible in the block where it defined. What is Variable Shadowing Variable shadowing happens when we define a variable in a closure scope with a variable name and we have already defined a variable in outer scope with the same name. In other words, when a local variable has the same name as one of the instance variable, the local variable shadows the instance variable inside the method block. In the following example, there is an instance variable named x and inside method printLocalVariable(), we are shadowing it by the local ...

Java Cloning - Copy Constructor versus Cloning

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 haven’t read it please go ahead. In order to implement cloning, we need configure our classes to follow below steps Implement Cloneable interface in our class or its superclass or interface, Define clone() method which should handle CloneNotSupportedException (either throw or log), And in most cases from our clone() method we call the clone() method of the superclass. And super.clone() will call its super.clone() and chain will continue until call will reach to clone() method of the Object class which will create a field by field mem copy of our object and return it back. Like everything Cloning also comes with its advantages and disadvantages. However, Java c...

How Does JVM Handle Method Overloading and Overriding Internally

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