No Such Method Error Java Main
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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 nosuchmethoderror in java about Stack Overflow the company Business Learn more about hiring developers or posting nosuchmethoderror main ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack nosuchmethoderror android Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Causes of 'java.lang.NoSuchMethodError: main Exception in thread “main”' up vote 45 java nosuchmethoderror but method exists down vote favorite 9 New Java programmers often encounter this message when they attempt to run a Java 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
Java.lang.nosuchmethoderror Ljava/lang/string
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 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 th
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Java Lang Nosuchmethoderror At Runtime
of this site About Us Learn more about Stack Overflow the company nosuchmethoderror runtime Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges java.lang.nosuchmethoderror v Ask Question 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; it only takes a minute: http://stackoverflow.com/questions/5407250/causes-of-java-lang-nosuchmethoderror-main-exception-in-thread-main Sign up Why do I get “no such method exception”? up vote -2 down vote favorite This is my code and it seems to be fine but when I compile the program I get No Such method exception import java.io.IOException; public class Invoked { public static String celebname = "Sometext" ; public static String urladdress = "someurl public static void main(String args[]) http://stackoverflow.com/questions/24141578/why-do-i-get-no-such-method-exception { Main.setpagesource(celebname); Main.seturl(urladdress); try { Main.Calculate(); } catch (IOException e) { e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. } //To change body of catch statement use File | Settings | File Templates. } } And the second class import java.io.*; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; public class Main { public static String address; public static String celebfilename; public static String pagesource; public static void Calculate() throws MalformedURLException { URL url1 = new URL(address) ; URLConnection connection1 = null; try { connection1 = url1.openConnection(); } catch (IOException e) { e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. } BufferedReader br = null; try { br = new BufferedReader( new InputStreamReader(connection1.getInputStream())); } catch (IOException e) { e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. } String fileName = "C:\\Users\\Dell\\Documents\\"+"pagesource"+".txt"; File file = new File(fileName); if (!file.exists()) { try { file.createNewFile(); } catch (IOException e) { e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates. } } FileWriter fw = null;
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 http://javarevisited.blogspot.com/2012/03/javalangnosuchmethoderror-main.html method which is not existed on 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 this article we will see what is "java.lang.NoSuchMethodError: main Exception in thread "main"" , Why does java.lang.NoSuchMethodError comes no such and how to solve java.lang.NoSuchMethodError in Java. What is "java.lang.NoSuchMethodError: main 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 no such method various reasons like: 1) Class which you are trying to run doesn't have main method. 2) Signature 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 opt