Encrypting passwords helps protect them from unauthorized access. In this article, we will see how to encrypt passwords in configuration files and decrypt them in a Java program when needed. Choosing encryption algorithm Before encrypting and decrypting passwords, we need…
It is common to represent timestamps in milliseconds in programming, but it’s often necessary to convert them into human-readable date and time formats for readability and presentation. Using the java.time package we can convert a timestamp in milliseconds to a…
Logging the line numbers is very helpful, particularly for easier debugging. It also helps us trace the execution flow through the code, making it easier to identify the sequence of events. Using the custom logging Another way to print the…
In this article, we will see how to format Java’s duration object in a readable format. Java’s duration class is part of the java.time package and is often used for measuring time intervals or durations in various Java applications. While…
The paths to files and directories vary between operating systems. For example, in Windows, backslashes (\) are used as separators, whereas in Unix-based systems, forward slash (/)is used. When joining the file paths, we should write generic code that will…
In this article, we will see how to use the defaultValue with RequestParam values. In many web frameworks, including Spring MVC for Java, we can define request parameters that are expected to be part of a request. We can set…
In this article, we’ll see how to replace case-insensitive literal substrings in Java replace() method The Replace() method in the String class is used to replace occurrences of a specific substring with another substring. To perform case-insensitive replacement, you can…
A jar file contains Java external dependencies such as classes, resources, and metadata. It is often used to package libraries and dependencies that your Java application requires to simplify the distribution and organization of Java code. In this article, we…
Serialization is used to convert an object’s state into a format that can be easily stored or transmitted, such as a string. In this article, we will see how to serialize an object into a string with Java’s built-in serialization…
In this article, we will see the potential causes and strategies for addressing “java.lang. OutOfMemoryError: unable to create new native Thread” runtime error Causes of this error: This runtime error usually happens when a Java application is unable to create…
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