Through this blog, I will be sharing how can we make a custom iterator in Java. Iterators can come in handy in many situations. An iterator is basically an object which can help us to go over a collection, it can serve as an alternative to foreach loop. So let’s explore more about custom iterators …
The collection is a framework in java. It contains some of the most used classes which are present in the interfaces. Collection interface mainly has 3 child interfaces and these are as follows. Image Source 1. List It contains an order of all the objects. This interface also helps you to have a dynamic size …
TreeSet is an implementation class of NavigableSet. In a TreeSet, duplicate as well as heterogenous (values of different data types) values are not allowed. If you’re trying to insert heterogeneous objects then it displays a ClassCastException. If the tree set exists, then we can insert a null value, and if the treeset doesn’t exist then …
Here you will learn about difference between arraylist and linkedlist in java i.e. arraylist vs linkedlist. Both ArrayList and LinkedList are similar in many ways like both implement List interface and are non-synchronized. But still there are various differences between them which I have discussed below. Also Read: Difference between ArrayList and Vector in Java Image …
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Here you will get to know the difference between ArrayList and Vector in Java programming language. ArrayList It is a class in Java that implements List interface. Unlike traditional array data structure, it is not fixed in length and doesn’t require its size to be specified in order to declare it. They can grow and …
In this tutorial you will learn about java properties file and how to perform read and write operations on it. What is properties file? In Java related technologies, properties file is used to store configuration data or settings of application. It has .properties extension. Why we need properties file? It makes application maintenance …
In this tutorial you will learn how to sort ArrayList of String or Integer in Java. We can easily sort an arraylist in ascending or descending order using Collections.sort() method. Below I have shared simple example for each of them. Sort ArratList in Java Example to Sort ArrayList of String Below program sorts an arraylist …
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