Often asked: How To Comment Out In 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 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 3 types of comments in Java?

In Java there are three types of comments:

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

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.

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How do you comment HTML code?

The <! – –> stuff is the HTML comment. It is a way to add notes into the code which will not display when the HTML is rendered by the browser. In the example above, to signify which opening div tag the closing tag was actually closing.

What are block comments?

Block comments delimit a region of source code which may span multiple lines or a part of a single line. This region is specified with a start delimiter and an end delimiter. Some programming languages (such as MATLAB) allow block comments to be recursively nested inside one another, but others (such as Java) do not.

How do you comment multiple lines at once?

The keyboard shortcut to comment multiple in Windows is shift + alt + A. In my case, Ubuntu, the shortcut is ctrl + shift + A. You can see all available keybindings on the official documentation. You will need to select the lines you want to comment first, then execute above shortcut, i.e. ⌘/ on osx Ctrl/ on Windows.

What are comments?

A comment is text in a program’s code, script, or another file that is not meant to be seen by the user running the program. Comments help make code easier to understand by explaining what is happening and help prevent portions of a program from executing. The image is an example of an HTML comment.

What is comments and its type?

Comments in Java are the statements that are not executed by the compiler and interpreter. It can be used to provide information or explanation about the variable, method, class or any statement. It can also be used to hide program code for a specific time.

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What are the two types of comments?

We have two types of comments here, the end-of- line comment and the block comment. An end-of- line comment terminates at the end of the line. A block line comment has a terminator and can continue for several lines, or be less than one line. Comments were called REMarks in BASIC.

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 “*”.

How do you write a Javadoc method?

Javadoc coding standards

  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.
  8. Use “this” to refer to an instance of the class.

What is API in Java?

API stands for application programming interface, a concept that applies everywhere from command-line tools to enterprise Java code to Ruby on Rails web apps. An API is a way to programmatically interact with a separate software component or resource.

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