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Convert a Phone Number in Words to Number with Java

We may wish to convert a telephone number, expressed in words, into its equivalent digits. We look at a general algorithm for processing the names of digits and multiplicative words such as double.

Regular Expression for Password Validation in Java

Learn how to use a regex for Java-based password validation processes.

Validate if a String Is a Valid Geo Coordinate

A short guide on checking if a Java String is a valid Geo Coordinate.

How to Get Last Record in Spring Data JPA

Explore different ways of getting the last record in Spring Data JPA.

Deserializing JSON to Java Record using Gson

Learn how to dÐµsÐµrializÐµ JSON data into Java rÐµcords using Gson.

Ensuring Message Ordering in Kafka: Strategies and Configurations

Learn how to ensure that messages are sent and received in the same order with Kafka.

Optional as a Record Parameter in Java

Learn about using Optional as a record parameter and understand why it’s a bad practice.

Capitalize the First Letter of Each Word in a String

Learn how to capitalize the initial character of each word in a Java string.

Wrapping a String After a Number of Characters Word-Wise

Learn to wrap a sentence automatically after a given number of characters.

Get All Record Fields and Its Values via Reflection

Explore how to retrieve all the fields and their values within a record class using Java’s Reflection API.

Calculate Distance Between Two Coordinates in Java

Learn three methods to calculate the distance between two geographical coordinates in Java.

Sorting Java Map in Descending Order

A quick and practical guide to sorting Java Map in descending order.

Guide to the yield Keyword in Java

Java’s new yield keyword makes it easier to provide a returned result from switch statements. We look at how it works and how it can help ensure we cover all possible cases.