Javadoc is a tool in Java for generating API documents, describing code elements through / comments and tags such as @param and @return. Use the javadoc command or IDE to quickly generate HTML documents, which helps team collaboration and improves code maintainability and professionalism. 1. Comments start with / and use tags to describe parameters, return values, etc.; 2. Use javadoc command or IDE to generate documents; 3. Mainly used for interface description, improve development efficiency, and publishing as part of the SDK.
Javadoc is a tool used in the Java programming language to generate API documents. It extracts comments in specific formats from Java source code and automatically generates well-structured, easy-to-review HTML-format documents. This is very useful when multiple people collaborate on developing or maintaining large projects.
How to write Javadoc comments?
Javadoc comments start with /**
and end with */
, usually above a class, method, or field. Some tags can be used in comments to describe different content, such as:
-
@param
: describe method parameters -
@return
: Instructions return value -
@throws
or@exception
: indicates an exception that may be thrown -
@see
: Add relevant reference links or classes/methods
For example:
/** * Calculate the sum of two integers. * * @param a First integer* @param b Second integer* @return The result of adding two integers*/ public int add(int a, int b) { return ab; }
How to generate Javadoc documents?
Use the javadoc
commands that come with JDK to quickly generate documents. The basic steps are as follows:
- Ensure that there are complete Javadoc comments in the source code
- Open a terminal or command line tool
- Execute the command:
javadoc -d doc-output *.java
This will generate the document comments in all
.java
files into thedoc-output
folderAfter the generation is completed, open
index.html
and you will see the complete API document.You can also export Javadoc directly through an IDE (such as IntelliJ IDEA or Eclipse), which is easier to operate.
Common uses and benefits of Javadoc
Javadoc is mainly used in the following aspects:
- Provide unified interface instructions when collaborating
- Convenient to check API functions and reduce the time of "reading code and guessing logic"
- Can be used as part of an SDK or library released to improve professionalism
- Automatically update document version with CI tools
Many people initially think that writing Javadoc is an extra burden, but once they develop a habit, it can help them sort out the code logic and make it easier for later generations to take over.
Basically that's it. After mastering the basic writing methods and generation methods, it is not difficult to use.
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