No Such Method Error Main
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 no such method error java about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges nosuchmethoderror android Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each java nosuchmethoderror but method exists other. Join them; it only takes a minute: Sign up Causes of 'java.lang.NoSuchMethodError: main Exception in thread “main”' up vote 45 down vote favorite 9 New Java programmers often encounter this message when they attempt to run a Java no such method error ljava/lang/string program: java.lang.NoSuchMethodError: main Exception in thread "main" What does this mean, what can cause it, and what should one do to fix it? java main nosuchmethoderror share|improve this question edited Mar 24 '13 at 1:23 community wiki 4 revs, 3 users 81%Stephen C Just guessing they're calling a function that doesn't exist, but the compiler is supposed to stop you if you were to do that. –eternalmatt Mar 23 '11 at 15:04 Wikification
Java Lang Nosuchmethoderror At Runtime
complete. –Tim Post♦ Mar 23 '11 at 15:07 @eternalmatt - This is a case that the compiler cannot deal with. See my answer for details. –Stephen C Oct 8 '14 at 6:09 add a comment| 7 Answers 7 active oldest votes up vote 28 down vote accepted When you use the java command to run a Java application from the command line, e.g., java some.AppName arg1 arg2 ... the command loads the class that you nominated, and then looks for the entry point method called main. More specifically, it is looking for a method that is declared as follows: package some; public class AppName { ... public static void main(String[] args) { // body of main method follows ... } } The specific requirements for the entry point method are: The method must be in the nominated class. The name of the method must be "main" with exactly that capitalization1. The method must be public. The method must be static 2. The method's return type must be void. The method must have exactly one argument and the type of that argument must be String[] 3. (The String[] argument is used to pass the arguments from the command line, and is required even if your application takes no command line arguments.) If any one of the above requirements is not satisfied, the java command will fail with the message: java.lang.NoSuchMe
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 developers
Nosuchmethoderror Runtime
or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question java.lang.nosuchmethoderror v x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; java lang nosuchmethoderror init it only takes a minute: Sign up How do I fix a NoSuchMethodError? up vote 66 down vote favorite 14 I'm getting a NoSuchMethodError error when running my Java program. What's wrong and how do I fix it? java nosuchmethoderror http://stackoverflow.com/questions/5407250/causes-of-java-lang-nosuchmethoderror-main-exception-in-thread-main share|improve this question edited Apr 26 '12 at 0:34 Charles Menguy 20.3k135893 asked Aug 29 '08 at 20:04 John Meagher 9,62294250 3 In Netbeans: Right click on project in Projects tab, use "Clean and Build". Solved it for me. –Heinzlmaen Jan 20 at 12:50 add a comment| 13 Answers 13 active oldest votes up vote 101 down vote accepted Without any more information it is difficult to pinpoint the problem, but the root cause is that you most likely http://stackoverflow.com/questions/35186/how-do-i-fix-a-nosuchmethoderror have compiled a class against a different version of the class that is missing a method, than the one you are using when running it. Look at the stack trace ... If the exception appears when calling a method on an object in a library, you are most likely using separate versions of the library when compiling and running. Make sure you have the right version both places. If the exception appears when calling a method on objects instantiated by classes you made, then your build process seems to be faulty. Make sure the class files that you are actually running are updated when you compile. share|improve this answer answered Aug 29 '08 at 20:14 Vetle 1,35311626 We recently discovered the cause of one of these and it turned out the build process was putting class files in place before the java server was shut down, and we hit this because the java server hadn't loaded some classes, and then it did load some but it got these new ones, and since the new code referred to methods that the old classes didn't have... bingo, NoSuchMethodError –vazor May 6 '15 at 16:30 add a comment| up vote 62 down vote I feel your pain. You can learn programming out of a book, but when it comes to working with Eclipse or Visual Studio, its a ^&^&'n nightmare to do something simple like add a libr
Exception in thread "main" How to solve java.lang.NoSuchMethodError: main Exception in thread "main" java.lang.NoSucMethodError comes when Java code tries to call a method which is not existed on http://javarevisited.blogspot.com/2012/03/javalangnosuchmethoderror-main.html a class, this could be either static or non static method. most common manifestation of java.lang.NoSuchMethodError is running a class which doesn't have main method in Java. In https://examples.javacodegeeks.com/java-basics/java-lang-nosuchmethoderror-how-to-avoid/ this article we will see what is "java.lang.NoSuchMethodError: main Exception in thread "main"" , Why does java.lang.NoSuchMethodError comes and how to solve java.lang.NoSuchMethodError in Java. What is "java.lang.NoSuchMethodError: main no such Exception in thread "main"" This is a manifestation of NoSuchMethodError in Java and complaining about "main" which is name of method JVM tries to call but doesn't find in offending class. "java.lang.NoSuchMethodError: main Exception in thread "main" can come due to various reasons like: 1) Class which you are trying to run doesn't have main method. 2) Signature no such method of main method is not correct . See here for all possible signature of main method in Java. Example of "java.lang.NoSuchMethodError: main Exception in thread "main" To better understand NoSuchMethodError in Java let's see some common examples of java.lang.NoSuchMethodError and find out how and when they come: 1) try to run a java class which doesn't have a main method: public class Loan{ public String getPersonalLoan(){ return "Personal Loan"; }; } 2) Now compile this class it should compile without any error: user@home:~/java javac Loan.java 3) Run as "java Loan" user@home:~/java java Loan java.lang.NoSuchMethodError: main Exception in thread "main" There are very few scenarios on which java.lang.NoSuchMethodError come during runtime because compiler is able to check this error and flag it if doesn't found the proper method except main which is optional method and only checked by JVM during runtime. As I said earlier Another possible cause of "java.lang.NoSuchMethodError: main Exception in thread "main" is that you have main method in class but signature
and DropEventsExpandableListViewGridViewHorizontalScrollViewImageButtonImageViewLinearLayoutListViewNotificationsPasswordProgressBarProgressDialogRadioButtonRadioGroupRatingBarRelativeLayoutScrollViewSelectorSettingsSpinnerSurfaceViewTextBoxTimePickerToastToggleButtonWebViewviewMenuOnClickListenerViewPagerwidgetAutoCompleteTextViewEditTextFrameLayoutSeekBarSlidingDrawerStackViewTextViewViewFlipperxmlgamescanvasmain loopOpenGL ESCore JavaanimationapacheANTcommonsbeanutilsconvertersArrayConvertercliBasicParsercodecbinaryBase64Base64OutputStreamcsvdbcpBasicDatasourcePoolingConnectioniocomparatorCompositeFileComparatorDirectoryFileComparatorLastModifiedFileComparatorNameFileComparatorPathFileComparatorFilenameUtilsFileUtilsIOUtilsmonitorFileAlterationMonitorlang3CharUtilsClassPathUtilsmathFractionNumberUtilsStringUtilsloggingLogfactorynetCookieStoreFTPClientURLClassLoaderURLConnectionluceneappletaspectjbeanscajoCharacterclassComperablecryptoDesign PatternsdecoratorstrategyGenericsGradlegsonGsonBuilderstreamJsonReaderJsonWriterioBufferedInputStreamBufferedOutputStreamBufferedReaderBufferedWriterByteArrayInputStreamByteArrayOutputStreamConsoleDataInputStreamDataOutputStreamExternalizableFileFileDescriptorFileInputStreamFilenameFilterFileOutputStreamFileReaderFileWriterInputStreamInputStreamReaderIOExceptionObjectInputStreamObjectOutputStreamOutputStreamPrintWriterRandomAccessFileSerializableStreamTokenizerStringReaderStringWriterjsonJacksonJSON.SimplejunitlangmanagementNumberFormatExceptionProcessBuilderReferenceQueueRunnableRuntimeStringStringBufferStringBuilderSystemmathMockitonetAuthenticatorConnectExceptionCookieManagerCookieStoreDatagramPacketHttpCookieInetAddressJarURLConnectionMalformedURLE