• 15 February

    Difference between process and thread in java

    In this tutorial, we are going to see differences between process and thread in java. If you are working on multithreading in java, it is good to know differences between process and thread. How multithreading can improve performance by executing code in parallel. Process vs Thread: The process can be referred as program in execution […]

  • 14 June

    Java Thread example

    Thread can be called as light weight process. Java supports multithreading , so it allows your application to perform two or more task concurrently.  Multithreading can be of advantage specially when now a days, machine has multiple CPUs, so multiple tasks can be executed concurrently. Whenever we call main method in java, it actually creates […]

  • 12 September

    Difference between Iterator and ListIterator in java

    In this post, we will see difference between Iterator and ListIterator in java. They are both used for traversal but it is good to point out differences between them. Iterator vs ListIterator: Parameter Iterator ListIterator Traversal Iterator can be used to traverse List,set, Queue ListIterator can be used to traverse only List. Traversal direction Iterator can […]

  • 17 February

    Difference between HashMap and HashSet in java

    One of the common interview question is “What is difference between HashMap and HashSet”..Before we actually see differences,let me give you brief introduction of both. Java HashMap: HashMap in java How HashMap works in java hash and indexfor method in HashMap hashcode and equals method in java How to sort HashMap by keys and values […]

  • 17 February

    Difference between Hashtable and HashMap in java

    One of the common interview questions is “What are differences between Hashtable and HashMap“.When I started using them, I used any of them irrespective of their differences.Afterward I found noticeable differences between them which can affect your performance of the application. .Before we actually see differences, let me give you a brief introduction of both. […]

  • 17 February

    Difference between ArrayList and Vector in java

    One of the common interview question is “What is difference between ArrayList and Vector”.Before we actually see differences,let me give you brief introduction of both. ArrayList ArrayList is implementation of list interface. ArrayList is not synchonized(so not thread safe) ArrayList is implemented using array as internal data structure.It can be dynamically resized . ArrayList increases […]

  • 17 June

    Difference between ArrayList and LinkedList in java

    One of the common interview question is “What is difference between ArrayList and LinkedList”.Before we actually see differences,let me give you brief introduction of both. ArrayList ArrayList is implementation of list interface. ArrayList is not synchonized(so not thread safe) ArrayList is implemented using array as internal data structure.It can be dynamically resized . LinkedList LinkedList […]

  • 19 July

    How HashSet works in java

    In this post, we will see about Hashset in java Java HashSet: [crayon-6096e94e1f2dc791837903/] This is one of the frequently asked question in core java interview so in this post, we will see how HashSet works in java.We have already seen How hashMap works in java and also difference between HashMap and HashSet. Lets first see […]

  • 24 February

    hashcode() and equals() method in java

    In this post ,we will try to understand hashcode() and equals() method in java. Java HashMap: HashMap in java How HashMap works in java hash and indexfor method in HashMap hashcode and equals method in java How to sort HashMap by keys and values Difference between HashMap and HashSet Difference between HashMap and Hashtable How […]