Reduce Memory Footprint in Java

Memory optimization in Java applications is critical for improving performance and reducing costs, especially in cloud environments. By carefully managing…

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Kafka Consumer Offset Example

Apache Kafka is a powerful distributed event-streaming platform, but to leverage its full potential, it’s essential to understand how consumer…

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Spring Boot Test Mock @value

In Spring Boot, the @Value annotation is widely used to inject values from property files, environment variables, or other external…

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java.lang.classnotfoundexception: com.mysql.cj.jdbc.driver Resolved

The error java.lang.classnotfoundexception: com.mysql.cj.jdbc.driver occurs when your Java application cannot locate the MySQL JDBC driver class at runtime. This issue…

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Query JPA Single Table Inheritance

In Java Persistence API (JPA), inheritance mapping provides a way to map Java class hierarchies to database tables. Single Table…

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Java Implicit Classes & Instance Main

Java, one of the most widely used programming languages, has seen continuous evolution over the years. One of the lesser-known…

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Java File To Two Dimensional Array

Handling data files is a common task in many Java applications, especially when working with structured data like tables or…

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Java Interface vs Annotation @interface

In Java, both interface and @interface are used to define a contract for classes, but they serve different purposes. Let…

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Mocking an Enum Using Mockito

When writing unit tests in Java, there are scenarios where we need to mock certain classes or behaviors to isolate…

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