Core java

Introduction In this tutorial, you will learn how to remove element from Arraylist in java while iterating using different implementations provided by Java. It is necessary to understand the right way to remove items from a List because we might encounter errors in our programs if not done correctly. For example, If we try to […]

Coding has become a very important part of the job industry, taking over almost every profession. You are required to have a basic knowledge of languages like HTML and CSS, if you apply for a job these days or even run your own business. With the entire world, trying to accommodate for regular coding lessons […]

In this post, we will see how to break out of nested loops in Java. Using break (will break inner loop) It is very important to understand how nested loops work to ensure that applying break will output the desired result. If you are a novice with nested loops, I am going to make the […]

In this post, we will see how to get current year in Java. Using Date and SimpleDateFormat The Date class was introduced in Java 1.0 and provided different approaches to work with time. The SimpleDateFormat inherits from DateFormat and is mainly used to parse a date to text. You can provide your custom pattern to […]

In this post, we will see how to remove substring from String in java. There are multiple ways to remove substring from String in java. Using String’s replace method to remove substring from String in Java This method belongs to the Java String class and is overloaded to provide two different implementations of the same […]

In this article, we will see how to print HashMap in java using different method. Print from the HashMap Reference This is the most basic and easiest method to print out HashMap in java. Pass the HashMap reference to the System.out.println, and the HashMap will output the key-value of the elements enclosed in curly brackets. […]

Java inbuilt LinkedList Java inbuilt LinkedList class uses doubly linked list as internal data structure to store its elements. It is subclass of AbstractList and implements List and Deque interfaces. Insertion and deletion of elements is faster than ArrayList as it interally uses double LinkedList. Print LinkedList using a for loop The most common method […]

We often have to check if a string contains a substring or not in a case-insensitive manner. There are multiple ways to do so. In this article, we will take a look at these methods for java String contains Ignore Case checks. Next, we will look at each method in detail. Using String.toLowerCase() One of […]

If you have worked with Java programs before, you know that all Java programs start by running the main() method(public static void main(String[] args)). The main() method is the entry point. The signature of the main method is fixed, and each portion of the statement has significance. Why is the main method so important? The […]