Detailed Explanation of Java Comments: Single-line, Multi-line, and Document Comments for Clearer Code
Java comments serve as code documentation, enhancing readability and facilitating debugging. Compilers ignore comments without affecting execution. There are three main types: Single-line comments (//): Only apply to a single line, starting with //. They can be placed after code or as standalone lines, used for brief explanations, and cannot be nested. Multi-line comments (/* */): Span multiple lines, starting with /* and ending with */. They cannot be nested and are suitable for explaining the overall logic of a code segment. Documentation comments (/** */): Used to generate API documentation, containing tags like @author and @param. Tools like Javadoc can generate help documents from such comments. Commenting guidelines: Avoid redundancy by emphasizing logic rather than repeating code; update comments promptly to match code changes; use appropriate types by scenario: document classes/methods with documentation comments, multi-line comments for complex logic, and single-line comments for variables/code lines. Proper use of comments enables code to "speak for itself," improving maintainability and collaboration efficiency, and is a valuable addition to code quality.
Read MoreOne-Line Python Comments: Correct Ways to Write Single-Line and Multi-Line Comments
Python comments are the "instruction manuals" for code, aiding understanding and review. Single-line comments start with `#`, and the content after `#` is ignored. They can be placed after a code line or on a separate line. Note that `#` does not affect other lines, and it should not be written inside strings. Multi-line comments are implemented using three single quotes `'''` or double quotes `"""`, which are essentially strings. If used inside a function, they serve as docstrings (documentation strings) and can be viewed with `help()`. It is important to avoid using comments to hide code, avoid redundancy (comments should explain "why" rather than "what"), and do not assign variables to multi-line comments. By mastering the syntax of single-line `#` and multi-line triple quotes, you can write clear comments.
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