Java Static Block: Purpose and Uses

Static code block is a segment of code that executes when a class is loaded, and its main purposes include the following:

1. Static variables can be initialized using static code blocks, where the values of the variables can be set within the block.
2. Performing complex initialization operations: If the initialization of a class requires performing some complex operations, these operations can be placed within a static code block to ensure the correct initialization of the class.
3. Load driver: When connecting to a database using JDBC, it is necessary to load the database driver using Class.forName(). This method is often placed in a static code block for execution.

It is important to note that static code blocks only execute once when the class is loaded, and they are executed in the order they appear in the code. Multiple static code blocks can exist.