FAQ: Java Comment Annotations?

How do you write a comment document in Java?

The special comments in the Java source code that are delimited by the /** */ delimiters. These comments are processed by the Javadoc tool to generate the API docs. The JDK tool that generates API documentation from documentation comments.

How do you write Javadoc comments in Java?

Writing 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.

What is @since in Java?

The @Since annotation can use with the setVersion() method of the GsonBuilder class. This annotation can apply to a field in java class and accepts float as an argument. This argument represents the version number in which the field has serialized. The same can apply to the deserialization process.

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What rules must be adhered to when adding comments to a Java program in order to obtain meaningful Javadoc output?

In the class, the comment should name the class, describe its purpose, and name the author. In the method, the comment should describe its purpose, comment all arguments, the return value, and any exceptions using JavaDoc keywords.

What is single line comment?

Single-line comments allow narrative on only one line at a time. Single-line comments can begin in any column of a given line and end at a new line or carriage return. The // character sequence marks the text following it as a single-line comment.

What is multiline comment?

Multiline comments are used for large text descriptions of code or to comment out chunks of code while debugging applications. Comments are ignored by the compiler.

What is single line comment in Java?

The single-line comment is used to comment only one line of the code. It is the widely used and easiest way of commenting the statements. Single line comments starts with two forward slashes (//). Any text in front of // is not executed by Java.

What is a documentation comment in Java?

What is Javadoc? Javadoc is a tool which comes with JDK and it is used for generating Java code documentation in HTML format from Java source code, which requires documentation in a predefined format. Similarly, the line which preceeds // is Java single-line comment.

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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Where do I put Javadoc comments?

You can place JavaDoc comments in any of three different locations in a source file:

  1. Immediately before the declaration of a public class.
  2. Immediately before the declaration of a public field.
  3. Immediately before the declaration of a public method or constructor.

Is Javadoc still used?

Javadoc is pretty much the accepted standard for documenting java code. Being able to convert it into HTML is just one of the benefits; a much more important one is that all the major Java IDEs understand it as well, and they will use it to display context-sensitive help while you code.

What is a Javadoc in Java?

Javadoc (originally cased JavaDoc) is a documentation generator created by Sun Microsystems for the Java language (now owned by Oracle Corporation) for generating API documentation in HTML format from Java source code. Writing comments and Javadoc is for better understanding the code and thus better maintaining it.

How do you write a multi line comment in Java?

Multi line comments in Java start with /* and end with */. You can comment multiple lines just by placing them between /* and */.

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.

Which is not a valid comment in Java?

Question 1: When you compile a program written in the Java programming language, the compiler converts the human-readable source file into platform-independent code that a Java Virtual Machine can understand. What is this platform-independent code called? Answer 1: Bytecode. Answer 2: c is an invalid comment.

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