What are the two main types of comments in Java?

In Java, there are two primary types of comments used for adding explanatory notes in the code: single-line comments and multi-line comments.

Single-line comments begin with // and extend to the end of the line. They are useful for brief notes or explanations that don't require multiple lines. For example:

// This is a single-line comment

int a = 5; // This initializes a variable

Multi-line comments, on the other hand, are enclosed between /* and */. This type allows for comments that span multiple lines, making it suitable for more detailed explanations or temporarily disabling blocks of code. For instance:

/*

This is a multi-line comment

that spans multiple lines in the code.

*/

int b = 10;

This commentary structure helps improve code readability and maintainability by allowing developers to provide context or clarify complex code segments, making it easier for others (or even themselves at a later time) to understand the logic behind the code.