Comments are lines of Java code that are ignored by the compiler and are intended to help human readers better comprehend the code. They explain the purpose, functionality, and specifics of the implementation of the code. Comments have no effect on the program's behavior at runtime because they are not executed as part of it.
There are three kinds of remarks in Java:-
1.One-sentence remarks:- These remarks start with two forward cuts (//) and go on for the rest of the line. Typically, single-line comments are used within the code for brief explanations or clarifications.
// Comment 2 is a single line. Comments that span multiple lines:-
These comments end with an asterisk followed by a forward slash (*/) and begin with a forward slash. Multi-line remarks can traverse various lines and are valuable for giving itemized portrayals or remarking out blocks of code.
* This is a comment with multiple lines. It can traverse different lines.
*/
3.Notes on the documentation:- These comments, which are also known as Javadoc comments, can be used to document classes, interfaces, methods, and fields. They end with a reference bullet followed by a forward cut (*/) and start with a forward cut followed by two marks (/**). The purpose, usage, parameters, return values, and exceptions of the documented code elements are all described in the documentation comments.
/** * This is a comment for a class, interface, method, or field in the documentation.
*/ Tools like Javadoc, which can generate HTML documentation from code comments, process documentation comments. They are normally used to give Programming interface documentation and assist different designers with understanding how to utilize the code.
Readability, maintainability, and collaboration all depend on comments. They make it easier for others, including potential code maintainers, to comprehend the codebase, provide context for the code, and enable developers to explain their thinking process. In software development, it is considered good practice to write comments that are clear and meaningful.
Code description:- Comments are used to explain the purpose or function of a particular line of code. They provide insight into the logic and rationale of your implementation, making it easier for other developers (including yourself) to understand your code.
2.Temporarily remove code:- Comments are often used to temporarily disable or comment out sections of code that are not currently needed. This is useful during development to test alternative solutions or fix issues without removing code entirely.
3.TODO & NOTES:- Comments help you leave reminders, notes or "TODO" tasks for yourself and other developers. These comments highlight areas that need attention or improvement in the future. Helps track unfinished work or areas that need further investigation.
4.Version control and collaboration:- Comments can be used to communicate changes made to the code base. If you use a version control system like Git, you can annotate commit messages to provide a summary of the changes made. This facilitates collaboration and helps team members understand the purpose and context of code changes.
5.Prevent execution:- You can prevent execution by placing a comment before a line or block of code. This is useful for debugging purposes or to temporarily exclude certain pieces of code that might be causing problems.
6.Organize your code:- You can use comments to structure and organize your code into logical sections. Comments add section headings and divide code into meaningful blocks to make your code base easier to navigate and understand.
7.Inline comments:- Comments can also be placed next to specific lines of code to provide additional explanation or clarification. These comments are useful when the code itself is not self-explanatory and requires additional context.
Remember that comments are valuable, but writing clean, understandable code is just as important. Comments should complement the code, not replace it. Well-written code with meaningful variable names, clear function definitions, and good formatting can reduce the need for excessive comments. However, judicious use of comments can greatly improve the readability and maintainability of Java code.
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