FAQ: How To Comment Java?

What is /* in Java?

/** and /* in Java comments Java supports single-line and multi-line comments very similar to C and C++. /** is known as documentation comments. It is used by Javadoc tool while creating the documentation for the program code. /* is used for multi-line comments.

How do you comment a whole class in Java?

Select the class’s contents, hit Command + / *, and your IDE should single-line comment everything.

What are Javadoc comments?

In general, Javadoc comments are any multi-line comments (” /** */ “) that are placed before class, field, or method declarations. They must begin with a slash and two stars, and they can include special tags to describe characteristics like method parameters or return values.

Is 0 True or false Java?

A 0 (zero) is treated as false. Where as in JAVA there is a separate data type boolean for true and false. In C and C++ there is no data type called boolean. That’s why it instead uses 1 and 0 as replacements for true and false values.

How do you write a good comment in Java?

By convention, in Java, documentation comments are set inside the comment delimiters /** */ with one comment per class, interface, or member. The comment should appear right before the declaration of the class, interface or member and each line of the comment should begin with a “*”.

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How do I comment out code?

You can comment out one or more lines of code in any C/C++ editor view. The leading characters // are added to the beginning of each line when commenting one or more lines of code. You can also block comment multiple lines of code using the characters /* */.

What are the three types of comments in Java?

In Java there are three types of comments:

  • Single – line comments.
  • Multi – line comments.
  • Documentation comments.

How do you code a document in Java?

Best Practices for Code Documentation in Java

  1. Code Documentation — A Debate.
  2. Three Types of Comments.
  3. Always Document API.
  4. Revisit the Code Documentation.
  5. Use DocCheck to Your Advantage.
  6. Give Meaning to Your Code Documentation.
  7. Always Mention Implementation-Independence.
  8. Method Comments Can Be Automatically Re-Used.

How do I write a javadoc?

Javadoc coding standard

  1. Write Javadoc to be read as source code.
  2. Public and protected.
  3. Use the standard style for the Javadoc comment.
  4. Use simple HTML tags, not valid XHTML.
  5. Use a single <p> tag between paragraphs.
  6. Use a single <li> tag for items in a list.
  7. Define a punchy first sentence.

How do you declare a comment in Java?

Format of a Doc Comment A doc comment is written in HTML and must precede a class, field, constructor or method declaration. It is made up of two parts — a description followed by block tags. In this example, the block tags are @param, @return, and @see.

Does 0 or 1 mean true?

Like in C, the integers 0 (false) and 1 ( true —in fact any nonzero integer) are used.

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Is true equal to 1?

True has all bits set to 1. Which happens to equal -1 for all signed integer types. You should really consider to set OPTION STRICT to true. There’s no reason why you need an implict conversion from Int32 to Boolean or any other magic conversion that opens the door for nasty errors.

What is true Java?

Allocates a Boolean object representing the value true if the string argument is not null and is equal, ignoring case, to the string “true”. Otherwise, allocate a Boolean object representing the value false. Examples: new Boolean(“True”) produces a Boolean object that represents true.

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