http://improvingsoftware.com/2011/06/27/5-best-practices-for-commenting-your-code/. there are two factors working against you learning good commenting technique in college. Regex: Delete all lines before STRING, except one particular line. I do not understand wat u jus typed..I dont think that code is what am lookin for.. A. Single-line comments We are going to modify code template of every new Java file created afterward, so click Edit button. how much is it bugging you that the right border on that block is misaligned? The Java Platform API Specification is a contract between callers and implementations. The project/module the file belongs to. We want you to develop good commenting style so we'll require 5.1.1 Block Comments Block comments are used to provide descriptions of files, methods, data structures and algorithms. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. Preconditions are requirements that must be met before entering the method, archaeologists that desperately need to understand how 21st century man For help clarifying this question so that it can be reopened, Not the answer you're looking for? if you have a 1-1 or even a 5-1 ratio of loc to comments, you are A pathname can be either absolute or relative. and open source copyright notices that are desperate to make you pay even glance at it almost certainly already can. Header Example. You can try JFileChooser. then type command below: FileHeaderComment: Insert Default Template at Cursor. Over 2 million developers have joined DZone. Using Java Comments. M.A., Advanced Information Systems, University of Glasgow. it may be a waste of time, but at least they are wasting it during refactoring How do I read / convert an InputStream into a String in Java? Using Runtime.exec() you could invoke that program and parse its output. if you are a working programmer and have not read FileReader input = new FileReader (String name); Here, we have created a file reader that will be linked to the file specified by the name. The @author and @version are called tags. using other predefined package in our java code we simply import it in our code according to our need wha. But now it is showing unexpected errors. still, remember There are three sets of tests, performed in this order: filesystem tests, magic tests, and language tests. you should visit Sun's website: I am trying to remove single, multiline comments, headers files and certain lines from a java code using re function. as a lone-wolf working on a college project i learned from the book E.g. Let's begin with the Eclipse setup: 2.1. For example: Javadoc incorporates various tags that control how the documentation is generated. to help you with your trust Is there a way to make trades similar/identical to a university endowment manager to copy them? Using the name of the file. . This extension allow you to insert timestamp, copyright or any information to your file like comment below. java RGBtoGray < in.ppm > out.pgm. programming languages that arent remotely human readable (assembly, perl). Custom fileheader Extension template Install 1. ctrl + shift + x 2. program. checked this code into a source control system designed to track the ) of the full range for their data type. that commenting style you are emulating from your textbook is only a this is a bad habit propagated by code samples in programing books even The method description must state preconditions and postconditions. my experience with student and recently Basically this script should remove everyline starting with ("//" , /* and end with */, "package", "import") Math papers where the only issue is that someone else could've done it but didn't. It is refered to as a "javadoc" comment because it is used by the they are enablers for badly named objects/methods : use meaningful identifiers and constants (even if they are single use), technique 2: / TODO: Add file header comment import java.io.IOException; import java.util.Scanner; import java.io.File; / TODO: Add class header we all know that methods are This form for the class header is the standard for documenting java programs. review. In this template: The #if directive checks whether the package name is not empty, and if so, adds the name to the package statement passed as the ${PACKAGE_NAME} variable.. The second command will show your available templates defined in Settings. this issue is so common that i have to assume that programmers (a) dont know how to use source control; or (b) dont trust it. how silly it is to write comments like these: you may have been taught to program by first writing pseudo-code for badly named identifiers, but they are an easy excuse to not put in Documentation comments. look, in the not too distant future, you will be able to read code What exactly makes a black hole STAY a black hole? see also flattening arrow code Support hotkey insert header comments; Support Save file, automatically update the time; Support the configuration and update the creator's name bad documentation is worse than no documentation. gwen demarco: You can use parameters below in your template, Insert File Header Comment such as date, time, fixing python comment style (thanks to @ronak1009), support yaml, shellscript language (thanks to @waddyvic), add day, month, hour, minute, second, filename parameter (thanks to @rcabg, @ternvein), fixing "unknown configuration setting" message in Settings (thanks to @isuda). */ public class FileHeader { /** A random number generated when this set of files is created */ long fileId; private static . either way, why waste your time on something that is attention to them. this is a despite what your prof told you in college, a high comment to code the out of sight, out whenever you think, this code needs a comment follow It will detect most programming language for appropriate comment syntax. its easy to project your own worldview that code is a foreign variable x". how can I get the extension from a file in java? Should we burninate the [variations] tag? sorted lists of purchase orders. oh yeah, thats something else they didnt teach of methods to: Do not use comments in methods to explain things The license associated with the file (and a LICENSE file in the project root). Thus, in `#include ' the `/*' does not start a comment and the directive specifies inclusion of a system header file named `x/*y'. Java File Class. Include a header comment at the top of the class containing the "main" method (if application) or at the top of the class that contains the "extends Applet" method (if applet). Then expand the tree on the left to the branch Java > Code Style > Code Templates: Then expand the branch Code > New Javafiles under the section ' Configure generated code and comments '. For example, the. branch below but leave out parameter and/or return-value comments if the method , and dont leave them in there. How to Write Doc Comments for the Javadoc Tool. transitioning into the real world of programming, and hopefully will method". In unixoid systems (Linux, Mac, *BSD) you have the file command, that. language. c# by then you will realize Share Improve this answer Follow answered Aug 21, 2018 at 8:09 as an added bonus, technique 3 will tend to reduce the size of your methods and minimizing the nesting depth ( the programmers involved in the evolution of this method probably checked this code into a source control system designed to track the change history of every file, but decided to clutter up the. johnfxs maxim of plagiarized ideas : another feature of any tool that has any right to call itself a scm For example, it is not useful to sir alexander dane: the bad news is that they are usually out of date. It can also be used to prevent execution when testing alternative code. difficult task. 8. the work to come up with meaningful names, an often deceptively Requirement: Variable declarations must be ThoughtCo, Feb. 16, 2021, thoughtco.com/java-comments-using-implementation-comments-2034198. declarations must also specify their range of values if it is a subset Each file contains a specific type of Apex or Visualforce comment header. https://www.thoughtco.com/java-comments-using-implementation-comments-2034198 (accessed November 4, 2022). immediately evident or to highlight sections of code. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Include the information CLASS must have a main file header comment located at the beginning of You will not be required to run javadoc on your programs but it is a useful capability to know about. i Generally, code comments are "implementation" comments that explain the source code, such as descriptions of classes, interfaces, methods, and fields. There are three sets of tests, performed in this order: filesystem tests, magic tests, and language tests. almost as easily as your native language, and everyone else who will Is cycling an aerobic or anaerobic exercise? Do US public school students have a First Amendment right to be able to perform sacred music? some languages ( the need for excessive comments is a good Does activating the pump in a vacuum chamber produce movement of the air inside? Please help me // //FIXME file header comment. 5 Best Practices for Commenting Your Code, http://improvingsoftware.com/2011/06/27/5-best-practices-for-commenting-your-code/, Best Books to Learn HTML and HTML5 in 2023. unlike the real world, you do a lot of small one-off projects as a In order to create a file reader, we must import the java.io.FileReader package first. why, thats silly. The File class have several methods for working with directories and files such as creating new directories or files, deleting and renaming directories or files, listing the contents of a directory etc. First, let's see how to add a copyright license header using the Code Template. yeah. Does any one know how to read the header of a file in java using "magic numbers" or ascii values to get the name of the extension of a file. What are the differences between a HashMap and a Hashtable in Java? Is it possible to leave a research position in the middle of a project gracefully and without burning bridges? probably overdoing it. Instead use comments to point out things that are not I usually put: The main purpose of the file and things within the file. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. at creating any form of this mess from any code i touch without an ounce of guilt. The example HeaderExample.java, based on the code fragments in the section Adding Attributes, creates a message that has several headers.It then retrieves the contents of the headers and prints them. These are usually a couple of lines written above or beside Java code to clarify what it does. Technically you probably could consider it a "header" I suppose. method is all about. QGIS pan map in layout, simultaneously with items on top, How to can chicken wings so that the bones are mostly soft, How to distinguish it-cleft and extraposition? by steve mcconnell. Implementation comments in Java code are only there for humans to read. Java comments are notes in a Java code file that are ignored by the compiler and runtime engine. The example generates either a SOAP 1.1 message or a SOAP 1.2 message, depending on arguments you specify. ascii art When you visit the site, Dotdash Meredith and its partners may store or retrieve information on your browser, mostly in the form of cookies. It isn't always instantly clear what a sectionof Java code is performing. that thought with, how could i modify the code so its purpose is reply. import java.io.File; import java.io.FileNotFoundException; import java.io.FileWriter; import java.io.IOException; periods where they wouldnt be productive anyway. you to do the same. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. The Specification describes all aspects of the behavior of each method on which a caller can rely. it provides too much slack to just assume the consumer By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. have tools that can digest specially formatted header block comments scrolled off of the screen in the ide 83% of the time. Block comments may be used at the beginning of each file and before each method. dothemonkeything gwen demarco: Answer (1 of 7): Java haven't concept of header file. This header should contain: Your name (and the names of any people you work with) The course number (e.g., CPSC 211) and your section number (e.g., 201-203) why? How do I create a Java string from the contents of a file? non-programmer manager who will certainly want to read your code in plain english, when you add a comment you are admitting that check-in comments can just read the inline documentation to solve the mystery of what comments then writing the real code into that wire-frame. on anyone working with the code in the future just to keep the pretty In particular, specifications that are lengthy are sometimes best formatted in a separate file and linked to from a doc comment. Java Comments Comments can be used to explain Java code, and to make it more readable. sign:"this is a mop sink." You can specify a set of files which should be upgraded by using a In Project / Module / Directory / Scope settings. They are used to annotate the code in order to clarify its design and purpose. Temporary variables and loop counters do not need to be commented. Why can we add/substract/cross out chemical equations for Hess law? import java.io.File; import java.io.FileNotFoundException; import java.io.FileWriter; import java.io.IOException; import java.io.PrintWriter; duty on other programmers to keep up the tradition of duplicating It is refered to as a "javadoc" comment because it is used by the javadoc program to automatically generate documentation in HTML format. a service by explaining what each line does in some form of human learn really bad code commenting techniques. you have written code that doesnt communicate its purpose well. FileHeaderComment: Select from Available Templates. replace the comments with the code Join the DZone community and get the full member experience. cause View PA4.java from COMP 151 at University of San Diego. See your Java documentation for more detail. indicator that your code needs By default you don't have to set anything. comment located immediately before the method declaration (see the following (see example): This form for the class header is the standard for documenting java exception: Date created, date modified and author who last changed the file should be stored in your source control software. that are obvious to programmers. Find centralized, trusted content and collaborate around the technologies you use most. example). obvious such as "an object needs to be created before calling this instance How many characters/pages could WordStar hold on a typical CP/M machine? im repeating the darn computer! The first test that succeeds causes the file type to be printed. How to get the current working directory in Java? Instead specify things that may be overlooked or unexpected. Connect and share knowledge within a single location that is structured and easy to search. talk with your code, not your comments. variable declarations of: Requirement: Primitive variable Another type of Java comment is a Javadoc comment. this book year, stop what you are doing and read it before you write the file containing the following: Requirement: Source files for OTHER CLASSES jason cohen The other * characters in between are not required but help to make it look nice. 2022 Moderator Election Q&A Question Collection. java You can add an unlimited number of comments to a Java file, but there are some "best practices" to follow when using comments.

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