Question: Comment 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 in Java?

The Java programming language has three kinds of comments: Traditional comments: The first five lines of the listing form one traditional comment. The comment begins with /* and ends with */. Everything between the opening /* and the closing */ is for human eyes only.

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.

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.

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What is comment give an example?

To comment is to make a statement, remark or express an opinion. An example of comment is when you share your opinion on an issue. The definition of a comment is a statement or remark. An example of a comment is a statement released in the paper that someone made about a scandal going on.

How do you comment in code?

How to comment Code: Primarily, a single “block” comment should be placed at the top of the function (or file) and describe the purpose the code and any algorithms used to accomplish the goal. In-line comments should be used sparingly, only where the code is not “self-documenting”.

What are the two types of comments?

Using Two Types of Comments

  • Marginal comments.
  • End comments.

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.

Is it true or true in Java?

In Java, there is a variable type for Boolean values: boolean user = true; So instead of typing int or double or string, you just type boolean (with a lower case “b”). After the name of you variable, you can assign a value of either true or false.

What is null in Java?

In Java(tm), “null” is not a keyword, but a special literal of the null type. It can be cast to any reference type, but not to any primitive type such as int or boolean. The null literal doesn’t necessarily have value zero. And it is impossible to cast to the null type or declare a variable of this type.

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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 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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