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Core Java
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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Enterprise Java
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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Core Java
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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Core Java
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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Core Java
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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Core Java
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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Enterprise Java
Execute Scheduled Task Only Once in Spring Boot
Usually, we configure tasks to run periodically. However, there are situations where we may need to schedule a task to…
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Core Java
Determine CSV File Delimiter In Java
CSV (Comma Separated Values) files are widely used for data storage and transfer. While the default delimiter is often a…
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Core Java
Iterate over a Guava Multimap
A Multimap is a collection that maps keys to values, where each key may be associated with multiple values. Let…
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