Java command not found

01.09.2020   |   by Kizragore

Java command not found

Java command not found
The cause could be:. Refer to "Installing Java" for the steps that you need to take. In general terms, there are three broad reasons that this can happen:. Look at the error message from the java command. The message should end with the full class name that java is trying to use. If checking the classpath by hand did not find the issue, you could add the -Xdiag and -XshowSettings options. The former lists all classes that are loaded, and the latter prints out settings that include the effective classpath for the JVM. This problem happens when the java command is able to find and load the class that you nominated, but is then unable to find an entry-point method. However, this behavior is not documented in the manual pages. Java Language Troubleshooting the 'java' command. Example This example covers common errors with using the 'java' command. The cause could be: you don't have a Java JRE or JDK installed at all, you have not updated the PATH environment variable correctly in your shell initialization file, or you have not "sourced" the relevant initialization file in the current shell. In general terms, there are three broad reasons that this can happen: You have specified an entry point class that does not exist. The class exists, but you have specified it incorrectly. The class exists and you have specified it correctly, but Java cannot it find it because the classpath is incorrect. Here is a procedure to diagnose and solve the problem: Find out the full name of the entry-point class. If you have source code for a class, then the full name consists of the package name and the simple class name. The instance the "Main" class is declared in the package "com. If you have a compiled class file, you can find the class name by running javap on it. If the class file is in a directory, you can infer the full class name from the directory names. Check that it exactly matches the full classname for the entry-point class. It should not end with ". It should not contain slashes or any other character that is not legal in a Java identifier 1. The casing of the name should exactly match the full class name. If you are using the correct classname, make sure that the class is actually on the classpath: Work out the pathname that the classname maps to; see Mapping classnames to pathnames Work out what the classpath is; see this example: Different ways to specify the classpath Look at each of the JAR and ZIP files on the classpath to see if they contain a class with the required pathname. Look at each directory to see if the pathname resolves to a file within the directory. Finally, there are some obscure causes for this problem: An executable JAR file with a Main-Class attribute that specifies a class that does not exist. If you mess up 2 the options before the classname, the java command may attempt to interpret one of them as the classname. If someone has ignored Java style rules and used package or class identifiers that differ only in letter case, and you are running on a platform that treats letter case in filenames as non-significant. Problems with homoglyphs in class names in the code or on the command line. There are three possible explanations: If you are trying to run an executable JAR file, then the JAR's manifest has an incorrect "Main-Class" attribute that specifies a class that is not a valid entry point class. You have told the java command a class that is not an entry point class. The entry point class is incorrect; see Entry point classes for more information. Other Resources What does "Could not find or load main class" mean? Previous Next. This website is not affiliated with Stack Overflow.

Java command not found windows 10

GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. I installed the Java pack. When i try to open a Java file, I have an error popup saying that a command is missing. In Log Window there are several stacktraces including one with the message mentioned :. I changed it in Apache Camel extension naming was not great for this extension. I had the same issue on windows before. I did not install any other plugins but only the java extension pack. Here is the way I solved it. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. New issue. Jump to bottom. Copy link Quote reply. In Log Window there are several stacktraces including one with the message mentioned : [ This comment has been minimized. Sign in to view. Fix incompatibility with Java Extension pack: same command name registered Sign up for free to join this conversation on GitHub. Already have an account?

-bash: java: command not found mac

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. You can add this line to. Adding this to. Learn more. Java command not found on Linux Ask Question. Asked 7 years, 9 months ago. Active 1 year, 3 months ago. Viewed k times. Then you need to check which java is called, which java and the path given e. Jasonw I have resolved the issue by the below mentioned solution by devsundar. Thanks anyway. The one with alternative is applicable to system wide. But if you are happy with the solution, that's great! Active Oldest Votes. When I chose 2, it did work. Ben Marc Nunes Marc Nunes 31 2 2 bronze badges. Hi and welcome to Stack Overflow, this site isn't a forum, it's a question and answer site and your other answer is a question. Please don't do this, thanks! Plentybinary Plentybinary 8 8 bronze badges. I use the following script to update the default alternative after install jdk. Shree Shree 2 2 silver badges 22 22 bronze badges. Sign up or log in Sign up using Google.

Bash: java command not found windows

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Super User is a question and answer site for computer enthusiasts and power users. It only takes a minute to sign up. I just bought fresh VPS with Ubuntu I try to use command java -version and I got error:. If I skip this step and use this command for install Java : sudo apt-get install sun-java6-bin sun-java6-jre sun-java6-jdk I got this error:. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Ubuntu Asked 7 years, 1 month ago. Active 5 years, 11 months ago. Viewed 1k times. I try to use command java -version and I got error: -bash: java: command not found If I skip this step and use this command for install Java : sudo apt-get install sun-java6-bin sun-java6-jre sun-java6-jdk I got this error: Unable to locate package sun-java6-bin Unable to locate package sun-java6-jre Unable to locate package sun-java6-jdk What's wrong with It? Thank you for answers. Josh 4, 4 4 gold badges 30 30 silver badges 43 43 bronze badges. Rs Penki Rs Penki 1 2 2 bronze badges. Active Oldest Votes. Ashwin Saxena Ashwin Saxena. In my sources.

-bash: java: command not found centos

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Ask Ubuntu is a question and answer site for Ubuntu users and developers. It only takes a minute to sign up. Follow the instruction to setup Java on Ubuntu If you see one or more installs, it will give you a list each element starting with a number. Just choose the number that corresponds to the version you want to use by default. If you don't see any installed then something is not right. In that case take a look at this question. While that question is for Oracle Java 7, it lists methods common to both Java 6 and Java 7, for installing Java and getting Ubuntu to see and link to the new Java installation. If you want version 6, just download the version 6 JDK and follow the instructions provided in that question, changing the filename accordingly. Ubuntu Community Ask! Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Java command not found Ask Question. Asked 8 years, 1 month ago. Active 6 months ago. Viewed 88k times. TonyMocha TonyMocha 3 3 gold badges 5 5 silver badges 11 11 bronze badges. Rebooting is nearly never a solution on Linux. If it is, a much shorter solution would have helped too, normally, like restarting a program or a fresh login. Active Oldest Votes. Did you try this command? Angarag Gantumur Angarag Gantumur 31 1 1 bronze badge. Add following lines to there. Jorge Castro You did not fix the broken package installation, you digged in and found the bin folder and put it first in your path. There is a default java that you can set up by the following commands: sudo apt install default-jre sudo apt install openjdkjre-headless sudo apt install openjdkjre-headless Let me know if it works! Ankita Mehta Ankita Mehta 1 1 bronze badge. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. The Overflow How many jobs can be done at home? Featured on Meta.

Bash. java command not found windows 10

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Installed Java 1. In Cygwin I can clearly see that "which java. Nor I can see the file in Windows explorer in the above mentioned path. Even after changing folder options in Windows explorer. The Java version installed is bit on Windows Server It is a ditto behavior on Window 7 as well. I believe this is because your OS is 64 bits, but your installed version of Java is bits. A bit shell Cygwin's bash or in my case MSYS' sh can see and run it, but a bit shell cmd cannot. I know this question is old but I needed the answer and didn't find it here so I will provide it for others:. Enter the variable value as the installation path for the Java Development Kit. If your Java installation directory has a space in its path name, you should use the shortened path name e. Learn more. Asked 7 years, 6 months ago. Active 5 years, 4 months ago. Viewed 25k times. Does anyone know how to fix this issue? Thank you in advance for any help. Rg Glpj Rg Glpj 2 2 gold badges 3 3 silver badges 10 10 bronze badges. Take a look at: stackoverflow. Active Oldest Votes. Don't they say that their java version is 64 bit?

Java -version -bash: java: command not found

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. It only takes a minute to sign up. I'm trying to use the following script to generate a sitemap for my website. When I run it as sh thsitemap. But as the same user root when I manually copy and paste these lines on the terminal, it works without any error and the sitemap. What's the problem? How can I fix this? When bash is run using the name shit disables most of its extensions, such as the [[ testing operator. Since you have the! Running the script as a command will use that line to find the shell. Both your Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Shell script throws a not found error when run from a sh file. But if entered manually the commands work Ask Question. Asked 5 years, 7 months ago. Active 3 years, 6 months ago. Viewed k times. THpubs THpubs 2 2 gold badges 6 6 silver badges 9 9 bronze badges. How you run the script?

Java bash: java: command not found

Welcome to LinuxQuestions. You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today! Note that registered members see fewer ads, and ContentLink is completely disabled once you log in. Are you new to LinuxQuestions. If you need to reset your password, click here. Having a problem logging in? Please visit this page to clear all LQ-related cookies. Introduction to Linux - A Hands on Guide This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own. Click Here to receive this Complete Guide absolutely free. I can run Java apps from my IDE, but the command line isnt working? Something wrong with my shell? I have this i n my. Find More Posts by twk. Add exactly the following to your. That would be correct for the default installation That should fix it. Find More Posts by santaman. Thread Tools. BB code is On. Smilies are On. All times are GMT The time now is AM. Open Source Consulting Domain Registration. Visit Jeremy's Blog. Search Blogs. Mark Forums Read. User Name. Remember Me? Programming This forum is for all programming questions. The question does not have to be directly related to Linux and any language is fair game. View Public Profile.

Sudo java command not found

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. The current directory is not in your PATH either. Option 1. Learn more. Asked 2 years, 1 month ago. Active 2 years, 1 month ago. Viewed 4k times. I use puTTy to connect to a remote server running Linux. Amber Amber 1 1 gold badge 12 12 silver badges 32 32 bronze badges. What happens if you use the full path? Refer to here askubuntu. Active Oldest Votes. Option 2. Option 3. Elliott Frisch Elliott Frisch k 14 14 gold badges silver badges bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. The Overflow How many jobs can be done at home? Featured on Meta. Community and Moderator guidelines for escalating issues via new response…. Feedback on Q2 Community Roadmap. Triage needs to be fixed urgently, and users need to be notified upon…. Dark Mode Beta - help us root out low-contrast and un-converted bits. Technical site integration observational experiment live on Stack Overflow. Related Hot Network Questions. Question feed. Stack Overflow works best with JavaScript enabled. Javac: file not found

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