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Last updated: May 2, 2013

What Does Comments Mean?

Comments, in Java, explain the actions of a particular piece of code. They are used to provide a summary of the code in plain English to help future developers better understand the code.

Techopedia Explains Comments

There are five types of comments in Java: Block comments give a file or method overview and also may be used within a method. A block comment method is declared as follows: /* *block comment describing the overview of the code. */ Single-line comments are short comments that may be written in a single line. If a single-line comment does not fit in the same line, a block comment must be used. The following is an example of a single-line comment: If (conditional statement) { /* execution of conditional statement*/ ... } /* is the delimiter for a single-line comment. Trailing comments are very short comments written in the same line of code that is being described. The delimiters are /*…*/. End of line comments are written at the end of the line, and the delimiter is //. Documentation comments, written before the declaration, are used to explain Java interfaces, classes, constructors, methods and fields. The delimiters are /**...*/.

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