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Comments (VB.Net and Java Cross Reference Guide)

By Mike Prestwood

VB.Net versus Java: A side by side comparison between VB.Net and Java.

Language Basics

Language basics is kind of a catch all for absolute beginner stuff. The items (common names) I chose for language basics is a bit random and include items like case sensitivity, commenting, declaring variables, etc.

Comments

[Other Languages]

Languages Focus

Commenting code generally has three purposes: to document your code, for psuedo coding prior to coding, and to embed compiler directives. Most languages support both a single line comment and a multiple line comment. Some languages also use comments to give instructions to the compiler or interpreter.

VB.Net: ' or REM

Commenting Code
VB.Net, like all the VB-based languages, uses a single quote (') or the original class-style basic "REM" (most developers just use a quote). VB.Net does NOT have a multiple line comment.

Syntax Example:

'Single line comment.

REM Old school single line comment.

VB.Net Comments (' or REM) 2 certification questions.

Java: // or /* ... */

Commenting Code
Java uses "//" for a single line comment and /* */ for a multiple line comment.

Syntax Example:

//Single line comment in MS (not ANSI compliant so do NOT use).
/* ANSI compliant single line comment. */
/*
Multiple line
comment.

*/

/*

* This is another popular way

* to write multi-line comments.

*/