Tech Tutorials

In this post we’ll see a Java program to reverse a doubly linked list . Reversing a doubly linked list In a doubly Linked list each node...

This post shows how to read properties file in Spring framework using XML configuration or by using @PropertySource Annotation. There ar...

In this post we’ll see how to write counting sort program in Java. Counting sort is one of the O(N) sorting algorithm like Radix Sort an...

Optional class, added in Java 8, provides another way to handle situations when value may or may not be present. Till now you would be usin...

In this post we’ll see the Spring framework support for sending emails. Technologies Used Examples showed in this post are written using ...

Write a Java program to rotate an array to the left or right by n steps is a frequently asked Java interview question. For example if yo...

In this post we'll see how to write a Comparator as a Java lambda expression to sort a List. Comparator as a lambda expression Since...