If you need to reverse the character order of a String, you can use StringBuilder to do that. Note that the following code prints: Java is great! If you have any questions, leave a comment or send me a message on my social media.

Usually, Java developers instantiate Maps using HashMap as implementation. Did you know HashMap doesn’t keep the order of insertion? Look at the following example: If we run the example above, the following output will be printed: So, if you want to keep the elements in… Read More »How to Keep the Elements of a Map in the Same Order That They Were Inserted

Here’s how to find the maximum value from a Collection in Java. If you have any questions, leave a comment or ask me on my social media.

Here’s how to split Strings in Java. If you have any questions, leave a comment or ask me on my social media.

See what happens when you pass a double as argument when constructing BigDecimal objects in Java. If you have any questions, leave a comment or ask me on my social media.

Here’s how to create a lazily initialized singleton in Java. If you have any questions, leave a comment or ask me on my social media.

Here’s how to use Callable and Future to run parallel tasks in Java. If you have any questions, leave a comment or ask me on my social media.

Here’s how to sort a Map by its values in Java. If you have any questions, leave a comment or ask me on my social media.