Ant Duplicate Class Error Java
Contents |
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 duplicate class error in ant build developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask
Java Duplicate Class Buildconfig
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 java duplicate class in classpath them; it only takes a minute: Sign up how to avoid “duplicate class” in Java up vote 8 down vote favorite 3 Suppose I have have a java project myProject and am using an external library jar (someJar.jar), which java duplicate class name has a class com.somepackage.Class1.class. Now I find an updated version of Class1.java which fixes a bug in the original jar. I include the new Class1.java in my source code under package com.somepackage When I build the project (e.g., using Netbeans), there is a dist\myProject.jar which contains the classcom.somepackage.Class1.class and a dist\lib\someJar.jar which also contains a class with the same name. When I run the file (e.g, using java -jar dist\myProject.jar), the new version of Class1.class is used (as I
Duplicate Class Java Netbeans
want). How does Java decide which class file to run in case of such duplicates? Is there any way I can specify precedence ? Is there any 'right' way to avoid such clashes? In Proguard, when I try to compress my code, I get a duplicate class error. How do I eliminate this? java share|improve this question asked Jun 21 '11 at 16:50 Jus12 6,8091460109 add a comment| 3 Answers 3 active oldest votes up vote 4 down vote accepted Java decides which one to use based on the order of the classpath. List yours first and you'll be fine. The "right" way would be to fix the orignal source, but sometimes that's not always an option. I haven't used ProGuard, but I have re-jarred libaries before that had duplicate classes. The solution in my case was to tell Ant to ignore duplicate classes. I would assume ProGuard would have that support too. share|improve this answer answered Jun 21 '11 at 16:57 Reverend Gonzo 22.4k43769 add a comment| up vote 6 down vote Can you not create an updated jar file which contains the bug fix? It's going to make things a lot simpler if you don't have two versions of the same fully-qualified class around. share|improve this answer answered Jun 21 '11 at 16:52 Jon Skeet 897k48665057442 I can do that. However, if in the future someone replaces that jar wit
My Publications Wednesday, February 10, 2010 Java: "duplicate class" and Mismatched File Name Error Developers who are new to Java can sometimes have trouble with class and package naming. In fact, the introductory Java forums are filled with threads starting with questions about these areas of Java. error duplicate class maven In this blog post, I look at some of these errors and some of the duplicate class netbeans causes of these errors.One of the more obvious errors occurs when a public Java class is named differently than the file that
Java Duplicate Class Intellij
contains the class definition.This is demonstrated in the next screen snapshot. In this example, a class was declared as public with the name Person, but was saved in a file called Person2.java. The error message is pretty explicit: http://stackoverflow.com/questions/6428992/how-to-avoid-duplicate-class-in-java "class Person is public, should be declared in a file named Person.java"The "duplicate class" error can sometimes be a little more tricky to resolve. One situation in which this occurs is when two source code directories include the same class with the same package structure. This error looks like that shown in the next screen snapshot.As the above screen snapshot indicates, the class dustin.examples.Person exists in both the src2 directory and (not shown here) in the http://marxsoftware.blogspot.com/2010/02/java-duplicate-class-and-mismatched.html src directory ("duplicate class: dustin.examples.Person"). Indeed, these are duplicate classes, at least in terms of package and class name.The "duplicate class" error can also occur when the class is named the same with the same package naming hierarchy, even if one of the classes exists in a directory structure with directory names different than the package names. This is shown in the next screen snapshot.This screen snapshot demonstrates that the "duplicate error" occurs when the class names and declared package names match even if the source file exists in directories with different names (different even than the declared package structure). What this implies is that if a particular class was copied to another directory without changing the package statement and the new directory was in the source path for javac, the "duplicate class" error will occur.Another interesting observation from the last example is that javac uses the package statement to decide where to build the .class file rather than using the source file's location in a directory structure.In the blog post Java duplicate class error, Morgy describes a situation in which he ran into the "duplicate class" error message (he had neglected to place the class's package declaration at the top of the class).ConclusionIn this post, I have attempted to show some common causes of errors that can be troublesome for those new to
error Summary: Duplicate Class error Status: VERIFIED INCOMPLETE Product: java Classification: Unclassified Component: Source Version: 8.1 Hardware: https://netbeans.org/bugzilla/show_bug.cgi?id=197983 PC Windows 7 Priority: P3 with 5 votes (vote) TargetMilestone: 7.3 Assigned To: Jan Lahoda QA Contact: issues@java URL: Whiteboard: 72patch-candidate Keywords: Duplicates: 198466 215437 (view as bug list) Depends http://www.openfl.org/archive/community/general-discussion/duplicate-class-error-when-using-external-mainactivityjava-template/ on: Blocks: Show dependency tree /graph Reported: 2011-04-22 05:12 UTC by debopamg Modified: 2016-06-08 08:01 UTC (History) CC List: 9 users (show) emanuel_ hennr nnovic ovrabec pwvirgo scgm11 duplicate class slass100 steveoh444 tombart See Also: Issue Type: DEFECT Exception Report : Attachments screencap showing duplicate file warning (68.57 KB, image/png) 2011-07-19 18:26 UTC, slass100 Details ~/.netbeans/var/log/message.log (40.59 KB, text/plain) 2011-07-19 18:28 UTC, slass100 Details View All Add an attachment (proposed patch, testcase, etc.) Note You need to log in before you can comment on or make changes to this bug. java duplicate class Description debopamg 2011-04-22 05:12:46 UTC Product Version = NetBeans IDE 7.0 RC1 (Build 201103280000) Operating System = Linux version 2.6.35-28-generic running on i386 Java; VM; Vendor = 1.6.0_24 Runtime = Java HotSpot(TM) Client VM 19.1-b02 There was a git merge conflict, and after resolving it (outside the IDE, using Meld), I find that the IDE is reporting the conflicted class as Duplicate class. I am using the GIT plugin. Comment 1 Ondrej Vrabec 2011-05-17 09:39:11 UTC What does it mean "Duplicate class"? Can you make a screenshot? Comment 2 Ondrej Vrabec 2011-05-19 08:19:36 UTC Please explain further Comment 3 debopamg 2011-05-19 09:29:47 UTC The problem occurs under the following circumstances: 1. the netbeans git plugin is installed 2. a merge/rebase is performed with the remote git repo 3. there is a conflict in one of the files 4. the conflict is resolved using an external tool (like Meld) 4. after the conflict is resolved, and the change commited, netbeans shows Duplicate class error for the class for which there was a conflict. Hope that helps. I am unable to re
"duplicate class" error when using external Mainactivity.java template Hi I'm trying to implement this hack: [url=http://www.gigglingcorpse.com/2012/04/27/prevent-android-from-dimming-w-haxe-and-nme/]http://www.gigglingcorpse.com/2012/04/27/prevent-android-from-dimming-w-haxe-and-nme/[/url] And I keep getting this e… Community (Archived) » General Discussion » "duplicate class" error when using external Mainactivity.java template Viewing 1 to 7 (7 Total) "duplicate class" error when using external Mainactivity.java template regularJoe Total Posts: 40 Joined: January 13, 2013 Hi I'm trying to implement this hack: http://www.gigglingcorpse.com/2012/04/27/prevent-android-from-dimming-w-haxe-and-nme/ And I keep getting this error (extract): -compile: [javac] Compiling 12 source files to C:\web\hxtest\app\haxe\bin\android\bin\bin\classes [javac] C:\web\hxtest\app\haxe\bin\android\bin\src\net\hxtest\MainActivity.java:5: duplicate class: net.hxtest.MainActivity [javac] public class MainActivity extends org.haxe.nme.GameActivity { [javac] ^ [javac] C:\web\hxtest\app\haxe\bin\android\bin\src\MainActivity.java:15: cannot find symbol [javac] symbol : variable Window [javac] location: class net.hxtest.MainActivity [javac] requestWindowFeature(Window.FEATURE_NO_TITLE); [javac] ^ [javac] 2 errors BUILD FAILED C:\SDKs\AndroidSDK\tools\ant\build.xml:712: The following error occurred while executing this line: C:\SDKs\AndroidSDK\tools\ant\build.xml:726: Compile failed; see the compiler error output for details. This is what the template tag reads int the build/application xml: template path="template/MainActivity.java" rename="src/MainActivity.java" if="android" / These are app and meta meta title="HaxeTest" package="net.hxtest" version="1.0.0" company="" / app path="bin" file="HaxeTest" main="HaxeTest" / The MainActivity.java file is package ::APP_PACKAGE::; import android.os.Bundle; import android.view.WindowManager; public class MainActivity extends org.haxe.nme.GameActivity { protected void onCreate(Bundle state) { super.onCreate(state); getWindow().addFlags( WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); } } In case it's of any relevance, the entry point file is right in the src folder, it starts like package ; import [...] class HaxeTest extends Sprite { private var [...] public function new (){[...] (I mean, no