run jar file from command line with main classwindows explorer has stopped working in windows 7

Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. I also thanked you in the comment as well because your answer was the only one that was useful. 2022 Moderator Election Q&A Question Collection. Why does it matter that a group of January 6 rioters went to Olive Garden for dinner after the riot? Step 3 (Check whether A.java is successfully compiled): Check in classes directory of proj1 whether class file is created or not. What is the difference between public, protected, package-private and private in Java? java -cp target/artifactId-version-SNAPSHOT.jar package.Java-Main-File-Name. java -cp myJavaJar.jar com.mypackage.myJavaClass. extract your jar using any archive tool e.g. Making statements based on opinion; back them up with references or personal experience. What is the difference between the following two t-statistics? True, it happens for me most of the time on copying from outlook or Skype.. omg that's what happened to me! How to add local .jar file dependency to build.gradle file? Is there a trick for softening butter quickly? to run any other class having "public static void main" in some package, java -cp "full-path-of-your-jar" package1.package2.packages-hierarchy.ClassHavingMain, 1.Create a text file calles Manifest.txt and provide the value as, jar cfm test.jar Manifest.txt classes/*.class. Are cheap electric helicopters feasible to produce? Thanks for contributing an answer to Stack Overflow! Below is from official java version jrt-fs.jar from java 11. com/mycomp/myproj/dir3/MainClass3.class Not the answer you're looking for? Have a class that acts as a controller. Edit: classes.TestClass does have a public static void main(String[] args). Thanks for contributing an answer to Stack Overflow! What do you mean when you say that you want 'to use' that class? Run main class using Maven. I've been through everything I've been able to find with this problem, and none of it seems to help. In its main(), invoke other classes based on arguments passed. This will directly add all files in the target/classes directory to the root of App.jar, thus solving the problem. I checked the below links, but those dint solve the problem: https://stackoverflow.com/questions/5474666/how-to-run-a-class-from-jar-which-is-not-the-main-class-in-its-manifest-file, manifest-file IntelliJ Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Running java application in terminal window: No such file or directory? http://java67.blogspot.com/2014/04/how-to-make-executable-jar-file-in-Java-Eclipse.html. For example: java SecondLevelJsonCreator 3 "C:/path/filename.xls". Now, create a jar file for the generated class as . substituting the actual full path of the folder containing your jar files for absolutepath.. Then, after re-loading the shell (or running the bash command), you should be able to type junitr hw1.SomeDataStructureTest into the shell (from wherever your class files are) and it will run JUnit!. You can only specify one JAR file, which must contain all of the application-specific code. After using copy all dependency jar, it works for me. I was pulling my hair out trying to solve this problem until I read it, and now my jar runs perfectly. Then, run this command. Why has it failed to load main-class manifest attribute from a JAR file? Just use this: java -cp MyJar.jar com.example.Main all 3 folders (folder1, folder2 and folder3) as well as the executable.jar need execute-privilege for the current user, otherwise the error "Could not find or load main class " is returned. rev2022.11.3.43005. And you need to create the jar file so that TestClass.class appears with a path of classes. Example 2: compile jar file command jar cvf example.jar * Example 3: java to jar For Linux: java -jar <filename>.jar jar cvf example.jar * In C, why limit || and && to evaluate to booleans? If you have your setup with Maven project -- make sure that the following match your JDK in the pom.xml file. To learn more, see our tips on writing great answers. Failing to run jar file from command line: "no main manifest attribute", Spring Boot jar launch error: Exception in thread "main" java.lang.NoClassDefFoundError, Spring Boot with Docker and Maven . Placing and using the lib folder in the src folder works. This is the right way to execute a .jar, and whatever one class in that .jar should have main() and the following are the parameters to it : Thanks for contributing an answer to Stack Overflow! Stack Overflow for Teams is moving to its own domain! 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. If you have a jar file called myJavaJar.jar located in /myJavafolder and you want to use the class called myJavaClass from it, How do you run this java program from command line? We can add our java file to manifest file so that we no need to pass the class name to java command while running it from command line. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How can I get a huge Saturn-like ringed moon in the sky? jar { manifest { attributes 'Main-Class': 'GradleDemo' } } . my.jar. The following command creates an executable jar file with the main class is net.codejava.swing.mail.SwingEmailSender: jar cfe SwingEmailSender.jar net.codejava.swing.mail.SwingEmailSender -C build\classes . Default manifest file is named as MANIFEST.MF and is present in the META-INF sub-directoryof archive. in IntelliJ, I get this error when trying to add the lib folder from the main project folder to an artifact. In the jar-file you need a manifest.txt file - inside the class with the main method has to be noted like this -> Main-Class: MyPackage.MyClass. Then Run command "java -jar .jar " to launch the program. 1. What exactly makes a black hole STAY a black hole? Stack Overflow for Teams is moving to its own domain! Is it considered harrassment in the US to call a black man the N-word? Although the default manifest file contains just two entries, but complex manifest files can have way more. The basic command is: java -jar jar-file. Connect and share knowledge within a single location that is structured and easy to search. Author: Venkatesh - I love to learn and share the technical stuff. What is a good way to make an abstract board game truly alien? Is there an other way than going (cd) into the folder with the packages/classes? How to run a class from Jar which is not the Main-Class in manifest file: I have a JAR with 4 classes, each one has Main method. The first parameter to the jar command indicates what the following parameters will mean. I was trying to package it with jar cvfe App.jar target/classes App, from the root directory of my project, as my App class was in the default unnamed package. tcolorbox newtcblisting "! Now I need to pass these parameters from the command prompt and need to run these two classes in a single jar. What are the differences between a HashMap and a Hashtable in Java? Efficiency of Java "Double Brace Initialization"? 3) Now you can run the jar from anywhere like this: I follow the following instruction to create a executable .jar in Eclipse. This was when I was trying to launch a very simply scala program: With an incorrect version, I was getting a cryptic message, the same the OP did. Open a command prompt and cd into your project folder. I was trying to to be helpful for noctua. What exactly makes a black hole STAY a black hole? If the class is not in a package then simply java -cp myJavaJar.jar myJavaClass. File ended while scanning use of \verbatim@start". The Documentation gives the following example: There are two types of JAR files available in Java: Runnable/Executable jar file which contains manifest file. To learn more, see our tips on writing great answers. Here, is what a default manifest file looks like. Other . (In the above command, '/home/myhome/datasource.properties' and '/home/myhome/input.txt' are the command line arguments). @Corral's comment should not be ignored. Create an archive, classes.jar, that contains two class files, Foo.class and Bar.class. How do I generate random integers within a specific range in Java? Is a planet-sized magnet a good interstellar weapon? Specifying the Main Class By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I am having this classes in one package so how i can i do this. Package Deceleration in classes.TestClass is package classes; But I still keep getting the error message. Is a planet-sized magnet a good interstellar weapon? A fully qualified path is preferred here as well. Some coworkers are committing to work overtime for a 1% bonus. The 'jar' command line tool is included in the JDK, so if you can compile on your machine, you'll also have access to the jar utility. Multiplication table with plenty of comments. Asking for help, clarification, or responding to other answers. Any help would be appreciated. Could you tell how's your java path and classpath set. Not the answer you're looking for? If you are not within the directory where myJar.jar is located, then you can do: java -cp /location_of_jar/myjar.jar com.mypackage.myClass, java -cp c:\location_of_jar\myjar.jar com.mypackage.myClass. As our intent is to create an executable JAR file, we have to create a main class. Is it considered harrassment in the US to call a black man the N-word? A jar file can be opened in a variety of ways. Maven exec plugin provides an option exec:java to run a main class program of your java project. is the TestClass in the package classes? Using friction pegs with standard classical guitar headstock, QGIS pan map in layout, simultaneously with items on top. --help-extra Displays help on extra options. I had a similar problem which I could solve by granting execute-privilege for all parent folders in which the jar-file is located (on a linux system). Making statements based on opinion; back them up with references or personal experience. Each line in the command file represents a command, a class name, and a method name for which the command is used. ), By trying the above I am getting the error Exception in thread "main" java.lang.NoClassDefFoundError: cucumber/api/cli/Main at com.company.project.demo.bdd.runner.Execute.main(Execute.java:20) Caused by: java.lang.ClassNotFoundException: cucumber.api.cli.Main at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) 1 more, if you on linux use ':' instead of ';' for adding dependent jars, the classpath separator ':' is ';' on windows. Solution. If the class is not in a package then simply java -cp myJavaJar.jar myJavaClass. The solution for this issue is described below. Find centralized, trusted content and collaborate around the technologies you use most. How to execute jar command with file name from java; Difference behavior when executing the jar file from command prompt and double click a jar file; Get the path when . Make sure it is not "/classes". C:\Sample>jar cvf sample.jar *.class added manifest adding: Sample.class(in = 434) (out= 302) (deflated 30%) Once you execute a JAR file is generated with the specified name. Then run the java command with these arguments:. Main-Class: com.test.myclass.MyClass In Eclipse, select File Export, then Java Runnable JAR File. In the Jar directory, I can clearly see a classes\TestClass file when I extract it. Let's do it in the package: com.exec.one. Example 1: open jar file with command prompt For Linux: java -jar <filename>.jar Related example codes about java to jar code snippet. You should generally avoid putting classes in the default package. Fortunately, the Fernflower decompiler that IntelliJ uses under the hood is Open Source and has a powerful command-line interface that can be used to decompile classes. java -cp HelloWorld.jar HelloWorld example:-> java -cp dependentfile1.jar:dependentfile2.jar:c:\location_of_jar\myjar.jar com.mypackage.myClass, Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned. @Log2 I know, but look at what noctua is asking in the comment. Running the Non-Executable JAR File Instead of using the -jar option, we will use the -cp option to run a non-executable JAR file. I had all my compiled class files in target/classes, which are not packages in my case. How can i extract files in the directory where they're located with the find command? How to draw a grid of grids-with-polygons? Inferring the Main Class Since we've gone ahead and made sure our main class is specified in the manifest, we can use the -jar option of the java command to run our application without specifying the main class: java -jar JarExample.jar 6.2. after mvn package command. If a creature would die from an equipment unattaching, does that creature die with the effects of the equipment? Does squeezing out liquid from shredded potatoes significantly reduce cook time? What is the effect of cycling on weight loss? If you try to run this jar with java -jar App.jar, it will complain that it cannot find the App class. Note 1: As I note in the Summary, you'll probably want to use a tool like sbt-assembly for larger . To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I can run the class just fine using command line. How do I efficiently iterate over each entry in a Java Map? Note that the arguments are separated with space. my ant jar task had a prefix of "/" but needed "". What is the best way to show results of a multiple-choice quiz where multiple options may be right? Please do not add any spam links in the comments section. How to fix Could not find or load main class error when building a JAR with IntelliJ? If you are not within the directory where myJavaJar.jar is located, then you can do: java -cp /location_of_jar/myJavaJar.jar com.mypackage.myJavaClass, java -cp c:\location_of_jar\myJavaJar.jar com.mypackage.myJavaClass. For this class, we will use jar cvfm: c: represents the create command, as we wish to create a new jar file. If you are not within the directory where myJavaJar.jar is located, then you can do: On Unix or Linux platforms: next step on music theory as a guitar player. Connect and share knowledge within a single location that is structured and easy to search. Answer: An executable jar is one with main class mentioned in a manifest file. 3 Answers. Math papers where the only issue is that someone else could've done it but didn't, How to constrain regression coefficients to be proportional. Should we burninate the [variations] tag? I want to be able to run each one of those as per the need. We need to specify the JAR file name and the main class name in the command. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Inside the War File. How can I best opt out of this? For instance, "cd /MyEclipseWorkspace/MyProject/bin" If, instead, jar uses the absolute path of the class files it may fail with "could not find or load main class" error. Does the Fog Cloud spell work in conjunction with the Blind Fighting fighting style the way I think it does? Is there a quick way to delete a file from a Jar / war without having to extract the jar and recreate it? Some coworkers are committing to work overtime for a 1% bonus. Now we can run our example war with two simple commands: $ mvn clean package spring-boot:repackage $ java -jar target/spring-boot-ops.war. When I choose another option "copy to the output directory", it solved the problem. What does "Could not find or load main class" mean? Along with other java commands like javac. How do I make kelp elevator without drowning? This is because the packages inside App.jar don't match the actual packages in the project. How do I simplify/combine these two methods? Screenshot from IntelliJ showing Include Tests checkbox, Sometimes could missing the below line under tag in pom.xml when packaging through maven. I thought it would be to go into the directory and say java -cp myJar.jar.myClass but that isn't working. Before we can run this, you need to have access to the Fernflower JAR file. In its main (), invoke other classes based on arguments passed. You need to be storing TestClass.class - some people new at this store the source file, TestClass.java. He may not have read the last thing in your answer. There are several options to use this plugin, let's see few of them. You can create your jar without Main-Class in its Manifest file. How can I create an executable/runnable JAR with dependencies using Maven? What is the best way to sponsor the creation of new hyphenation patterns for languages without them? This os the only answer that helped me! In these two classes I have hardcoded the file path and sheet number 3, which contains the data. These code snippets will help you about run a .jar file from command prompt. How do I call one constructor from another in Java? Put them in a package, make sure the directory tree matches the package tree, and use the fully qualified name of the class: Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Put TestClass.class in a folder classes/. The -jar option only works if the JAR file is an executable JAR file, which means it must have a manifest file with a Main-Class attribute in it. --version Prints the program version. Make a wide rectangle out of T-Pipes without loops. Using Java's Windows Explorer is a viable option. If you do unzip -l /location-of-jar/myjar.jar, and see something other than com/mypackage/myClass, this is your problem. To make things a little more complicated, my Scala project depends on three external jar files, and the main method requires a command-line argument.. Put it somewhere you can find it easily to run it, like your .

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