The CopyOnWriteArrayList iterator method returns an iterator over the elements in the sequence they were inserted. As explained in the previous posts, CopyOnWriteArrayList creates its copy when per
CopyOnWriteArrayList addAllAbsent method
CopyOnWriteArrayList provides a new method public int addAllAbsent(Collection<? extends E> c) , which adds all of the elements in the specified collection that are not already contained in this list, to the end of
CopyOnWriteArrayList addIfAbsent method
CopyOnWriteArrayList provides a new method public boolean addIfAbsent(E e), which adds elements only if that element is not present in the List. This is helpful when you need to add only unique
Add elements in CopyOnWriteArrayList
In this post we will see how to add elements in CopyOnWriteArrayList using below 2 methods 1. boolean add(E e) Appends the specified element to the end of this list. 2. void add(int index, E elemen
Basics of CopyOnWriteArrayList in Java
CopyOnWriteArrayList in java is a thread-safe implementation of the List interface. It is part of the java.util.concurrent package. How CopyOnWriteArrayList in Java works internally CopyOnWriteArra
LinkedList in java
As we have seen earlier, ArrayList is not so good when it comes to adding/removing elements using index. This is solved using the LinkedList in java. Few points about LinkedList to remember 1. It i
ArrayList in Java
ArrayList in Java is an implementation of the List interface. Few points about ArrayList 1. Internally uses array but can be dynamically resized. 2. Allows duplicate elements 3. Maintains the inser
String to Date mapping in Dozer
String to Date mapping in Dozer can be configured in multiple ways using the XML configurations. 1. Field Level Mapping Date format in which date needs to be parsed can be specified on that particu
Using XML configurations in Dozer Mapping
Dozer mapper supports both mapping via Annotations and XML configurations.In our previous posts we have seen how Annotations are used in Dozer. Lets see an example on simple mapping using XML confi
Extract Image from PDF using Apache PDFBox
Images can be extracted from pdf using couple of ways in PDFBox library. In this post we will see the ways we can extract Image from PDF using Apache PDFBox. Extract Image using PDFRenderer [crayon