Compile Error Cannot Find Symbol
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Error Cannot Find Symbol Variable
a minute: Sign up What does a “Cannot find symbol” compilation error mean? up vote 110 down vote favorite 38 Please explain the following about the "Cannot find symbol" error: What does this error mean? What things can cause this error? How does the programmer go about fixing this error? This question is designed to be a comprehensive question about "cannot error cannot find symbol class builder find symbol" compilation errors in Java. java compiler-errors cannot-find-symbol share|improve this question edited Feb 27 at 17:29 BalusC 682k20324712691 asked Sep 7 '14 at 1:12 Stephen C 386k44410738 add a comment| 6 Answers 6 active oldest votes up vote 141 down vote accepted 1. What does a "Cannot find symbol" error mean? Firstly, it is a compilation error1. It means that either there is a problem in your Java source code, or there is a problem in the way that you are compiling it. Your Java source code consists of the following things: Keywords: like true, false, class, while, and so on. Literals: like 42 and 'X' and "Hi mum!". Operators and other non-alphanumeric tokens: like +, =, {, and so on. Identifiers: like Reader, i, toString, processEquibalancedElephants, and so on. Comments and whitespace. A "Cannot find symbol" error is about the identifiers. When your code is compiled, the compiler needs to work out what each and every identifier in your code means. A "Cannot find symbol" error means that the compiler cannot do this. Your code appears to be r
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring error cannot find symbol method findviewbyid(int) developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask error cannot find symbol class googleplayservicesclient Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join error cannot find symbol in java them; it only takes a minute: Sign up “Cannot Find Symbol” compile error up vote 4 down vote favorite 1 My coding experience has only gone back a few years, so this question should be easy enough to answer. http://stackoverflow.com/questions/25706216/what-does-a-cannot-find-symbol-compilation-error-mean I have written two interfaces: Class and Game. Interface CLASS is supposed to extend interface GAME. Here are the two interface sources: package Impl; public interface Game { //METHODS AND VARS } package Impl; public interface Class extends Game { //METHODS AND VARS } Now, when I try to compile the second interface, I get the following error class.java:4: cannot find symbol symbol: class Game public interface Class extends Game ^ My Game class is compiled and the class http://stackoverflow.com/questions/3903330/cannot-find-symbol-compile-error file is in the same directory as both java files. I have not been able to find a solution. Does anyone have any ideas? java compiler-errors share|improve this question edited Oct 11 '10 at 3:21 James McNellis 244k46708846 asked Oct 11 '10 at 3:19 Jay 21112 add a comment| 2 Answers 2 active oldest votes up vote 8 down vote Class names are case sensitive. It is possible that you have created an interface called game, but you refer to it in your Class interface declaration as Game, which the compiler cannot find. However, there is another chance that you are compiling from within your Impl package. To do this, you will need to reference your classpath such that the compiler can find classes from the base of the package structure. You can add a -classpath .. arg to your javac before the class name: javac -classpath .. Class.java Alternatively, you can do what is more common, compiling from the root of your package structure. To do so, you will need to specify the path to your Class file: javac Impl\Class.java you can always add a -classpath . to be clear. share|improve this answer edited Oct 11 '10 at 3:53 answered Oct 11 '10 at 3:42 akf 28.9k65986 Thank you. This solved my problem completely. I had assumed it was a coding problem. –Jay Oct 11 '10 at 3:55 6 Jay,
3 The Structure of Java Program - Hello NetBeans… 4 Learning Java: Type Witnesses 5 Using Constants About.com About Tech Java . . . Learn About the Basic Building Blocks of Java Java Error http://java.about.com/od/cerrmsg/g/Definition-Cannot-Find-Symbol.htm Messages Glossary of Java Error Messages :"C" Error Message: Cannot Find Symbol Savas Keskiner/E+/Getty Images By Paul Leahy Java Expert Share Pin Tweet Submit Stumble Post Share By Paul Leahy Definition: When a https://www.youtube.com/watch?v=GaLhKxdKdOk Java program is being compiled the compiler creates a list of all the identifiers in use. If it can't find what an identifier refers to (e.g., there is no declaration statement for a error cannot variable) it cannot complete the compilation. This is what the cannot find symbol error message is saying, it doesn't have enough information to piece together what the Java code wants to execute.Possible Causes:trying to use a variable without declaring it.misspelling a class or method name (remember, Java is case sensitive).the parameters used do not match a method's signature.the packaged class has not being referenced correctly using an error cannot find import declaration.Examples: The following code: System.out.prontln("The perils of mistyping.."); will cause a cannot find symbol error because the System.out class does not have a method called “prontln”: cannot find symbol symbol: method prontln(jav.lang.String) location: class java.io.printStream The two lines below the message will explain exactly what part of the code is confusing the compiler. continue reading below our video 9 Tips to Extend Your Phone's Battery Error Message Glossary:# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Show Full Article Related Compile-time Error Understanding 'Overloading' In Java Parameter Statement More from the Web Powered By ZergNet Sign Up for Our Free Newsletters Thanks, You're in! About Today Electronics & Gadgets Java You might also enjoy: Healthy Eating Health Tip of the Day Sign up There was an error. Please try again. Please select a newsletter. Please enter a valid email address. Did you mean ? Thank you,,for signing up! Java Getting Started Programming Concepts Java Syntax Building Applications Creating User Interfaces Web Applications Java Glossary Test Your Java Programming Knowledge Tools and Utilities Code Resources Java Community About Tech F
Error - Cannot Find Symbol jsyersiii SubscribeSubscribedUnsubscribe77 Loading... Loading... Working... Add to Want to watch this again later? Sign in to add this video to a playlist. Sign in Share More Report Need to report the video? Sign in to report inappropriate content. Sign in Statistics 9,413 views 2 Like this video? Sign in to make your opinion count. Sign in 3 17 Don't like this video? Sign in to make your opinion count. Sign in 18 Loading... Loading... Loading... Rating is available when the video has been rented. This feature is not available right now. Please try again later. Uploaded on Dec 1, 2010 Category Education License Standard YouTube License Loading... Autoplay When autoplay is enabled, a suggested video will automatically play next. Up next Java Programming - Step by Step tutorial - Duration: 1:27:25. Patrick WashingtonDC 2,763,554 views 1:27:25 Fixing cannot find symbol in Java - Duration: 7:05. Brandan Jones 587 views 7:05 How to solve cannot find symbol error in Java? - Duration: 1:42. roseindiatutorials 1,480 views 1:42 Java Programming Tutorial 06 Syntax Errors and Logical Errors - Duration: 5:50. Gaute Michel Ferstad 5,989 views 5:50 Programming is terrible—Lessons learned from a life wasted. EMF2012 - Duration: 1:06:44. Thomas Figg 1,237,244 views 1:06:44 Common Syntax Errors - Java - Duration: 3:34. Jeff Miller 575 views 3:34 Java package system does not exist probles solved - Duration: 2:04. Sakaros Zulu 5,643 views 2:04 Java Syntax Error: Incompatible types - Duration: 3:36. jsyersiii 1,668 views 3:36 how to declare identifiers in java - Duration: 1:47. kapil gupta 549 views 1:47 Java Common Syntax Errors using TextPad - Duration: 12:20. Derrf Seitz 469 views 12:20 |Windows| Set Up Your Java path (Java Path Error Fix!) - Duration: 3:23. KillerUnicorns 6,569 views 3:23 How to compile your ja