How can I generate Javadoc comments in Eclipse?

java

javadoc

eclipse

best-practices

byNikita Barsukov·Oct 4, 2024

Activate the Javadoc template in Eclipse by pressing Alt + Shift + J above the code element that needs documentation. With a method, Eclipse will pre-fill the parameters and return types, like so:

/**
 * Adds two integers...because addition is awesome!
 *
 * @param a First operand. Can't add without an a!
 * @param b Second operand. Throw in a b for a good time.
 * @return Sum of a and b. Who knew adding was this easy?
 */
public int add(int a, int b) {
    return a + b;
}

Enrich your auto-generated comments

Generating Javadoc comments with Alt + Shift + J will give you a well-structured skeleton. However, a skeleton without flesh is just bones—bring your Javadoc to life with useful, detail-rich explanations!

Avoid unnecessary comment clutter

When generating comments, be sure to fill them out promptly. Otherwise, placeholders like "TODO" become noise. Make your Javadoc comments sing, not shriek.

Leverage JAutoDoc for automated comments

A handy plugin called JAutoDoc can help immensely with Javadoc creation, providing template-based automations. Just remember: no plugin can replace your valuable insight!

Generating Javadoc in batches

You can generate Javadoc comments for entire projects in Eclipse under Project -> Generate Javadoc. Just remember to perform a code review to ensure all comments are accurate and useful.

Documentation: an ongoing endeavor

Regular Synchronization

Good documentation is a marathon, not a sprint. Make sure your Javadoc comments regularly reflect the latest changes in your codebase—an outdated doc is an unhelpful doc.

Making Documentation Reader-friendly

Strive to make comments that are both precise and approachable. Think of how you'd explain your code to someone you respect...who might also have the power to fire you.

Keep up with Eclipse evolution

Eclipse frequently updates with new functionalities, including upgraded Javadoc capabilities. Stay cutting-edge; your docs will thank you!

Perfecting your documentation workflow

Invest time, then reap benefits

Putting effort into initial documentation is the coder's ultimate savings account. You'll have more time for cool features… and less time explaining what “a” and “b” do.

Power-up your toolkit

Optimize how you utilize shortcuts and plugins like JAutoDoc. You'll write better code, and your keyboard will last longer!

The power of peer review

Even great writers have editors. Praise your team's flawless code, and gracefully accept when they point out your docs spelled “integer” as “interger”.

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