I want to execute my program without using an IDE.
I've created a jar file and an exectuable jar file. When
I double click the exe jar file, nothing happens, and when I try to use the command in cmd it gives me this:
Error: Unable to access jarfile <path>
I use the command: java -jar Calculator.jar
How I created the jar:
Right click on project folder (Calculator)
Select
Click on Java Folder and select "Exectuable Jar File", then select next
Launch Configuration: Main - Calculator
Create Export Destination
Hit "Finish" and profit! Well, not really.
I had encountered this issue when I had run my Jar file as
java -jar TestJar
instead of
java -jar TestJar.jar
Missing the extension .jar also causes this issue.
Fixed
I just placed it in a different folder and it worked.
[Possibly Windows only]
Beware of spaces in the path, even when your jar is in the current working directory. For example, for me this was failing:
java -jar myjar.jar
I was able to fix this by givng the full, quoted path to the jar:
java -jar "%~dp0\myjar.jar"
Credit goes to this answer for setting me on the right path....
I had this issue under CygWin in Windows. I have read elsewhere that Java does not understand the CygWin paths (/cygdrive/c/some/dir instead of C:\some\dir) - so I used a relative path instead: ../../some/dir/sbt-launch.jar.
I had the same issue when trying to launch the jar file. The path contained a space, so I had to place quotes around. Instead of:
java -jar C:\Path to File\myJar.jar
i had to write
java -jar "C:\Path to File\myJar.jar"
Just came across the same problem trying to make a bad USB...
I tried to run this command in admin cmd
java -jar c:\fw\ducky\duckencode.jar -I c:\fw\ducky\HelloWorld.txt -o c:\fw\ducky\inject.bin
But got this error:
Error: unable to access jarfile c:\fw\ducky\duckencode.jar
Solution
1st step
Right click the jarfile in question. Click properties.
Click the unblock tab in bottom right corner.
The file was blocked, because it was downloaded and not created on my PC.
2nd step
In the cmd I changed the directory to where the jar file is located.
cd C:\fw\ducky\
Then I typed dir and saw the file was named duckencode.jar.jar
So in cmd I changed the original command to reference the file with .jar.jar
java -jar c:\fw\ducky\duckencode.jar.jar -I c:\fw\ducky\HelloWorld.txt -o c:\fw\ducky\inject.bin
That command executed without error messages and the inject.bin I was trying to create was now located in the directory.
Hope this helps.
None of the provided answers worked for me on macOS 11 Big Sur. The problem turned out to be that programs require special permission to access the Desktop, Documents, and Downloads folders, and Java breaks both the exception for directly opened files and the permission request popup.
Fixes:
Move the .jar into a folder that isn’t (and isn’t under) Documents, Desktop, or Downloads.
Manually grant the permission. Go to System Preferences → Security and Privacy → Privacy → Files and Folders → java, and check the appropriate folders.
I had a similar problem and I even tried running my CMD with administrator rights, but it did not solve the problem.
The basic thing is to make sure to change the Directory in cmd to the current directory where your jar file is.
Do the following steps:
Copy jar file to Desktop.
Run CMD
Type command cd desktop
Then type java -jar filename.jar
This should work.
Edit: From JDK-11 onwards ( JEP 330: Launch Single-File Source-Code Programs )
Since Java 11, java command line tool has been able to run a single-file source-code directly. e.g.
java filename.java
If you are using OSX, downloaded files are tagged with a security flag that prevents unsigned applications from running.
to check this you can view extended attributes on the file
$ ls -l#
-rw-r--r--# 1 dave staff 17663235 13 Oct 11:08 server-0.28.2-java8.jar
com.apple.metadata:kMDItemWhereFroms 619
com.apple.quarantine 68
You can then clear the attributes with
xattr -c file.jar
It can also happen if you don't properly supply your list of parameters. Here's what I was doing:
java -jar test#gmail.com testing_subject file.txt test_send_emails.jar
Instead of the correct version:
java -jar test_send_emails.jar test#gmail.com testing_subject file.txt
This worked for me.
cd /path/to/the/jar/
java -jar ./Calculator.jar
For me it happens if you use native Polish chars in foldername that is in the PATH.
So maybe using untypical chars was the reason of the problem.
sometime it happens when you try to (run or create) a .jar file under /libs folder by right click it in android studio. you can select the dropdown in top of android stuio and change it to app. This will work
My particular issue was caused because I was working with directories that involved symbolic links (shortcuts). Consequently, trying java -jar ../../myJar.jar didn't work because I wasn't where I thought I was.
Disregarding relative file paths fixed it right up.
In my case the suggested file name to be used was jarFile*.jar in the command line. The file in the folder was jarFile-1.2.3.jar . So I renamed the file to jarFile. Then I used jarFile.jar instead of jarFile*.jar and then the problem got resolved
It can happen on a windows machine when you have spaces in the names of the folder. The solution would be to enter the path between " ".
For example:
java -jar c:\my folder\x.jar -->
java -jar "c:\my folder\x.jar"
To avoid any permission issues, try to run it as administrator. This worked for me on Win10.
I know this thread is years ago and issue was fixed too. But I hope this would helps someone else in future since I've encountered some similar issues while I tried to install Oracle WebLogic 12c and Oracle OFR in which its installer is in .jar format. For mine case, it was either didn't wrap the JDK directory in quotes or simply typo.
Run Command Prompt as administrator and execute the command in this format. Double check the sentence if there is typo.
"C:\Program Files\Java\jdk1.xxxxx\bin\java" -jar C:\Users\xxx\Downloads\xxx.jar
If it shows something like JRE 1.xxx is not a valid JDK Java Home, make sure the System variables for JAVA_HOME in Environment Variables is pointing to the correct JDK directory. JDK 1.8 or above is recommended (2018).
A useful thread here, you may refer it: Why its showing your JDK c:program files\java\jre7 is not a valid JDK while instaling weblogic server?
For me it happen because i run it with default java version (7) and not with compiled java version (8) used to create this jar.
So i used:
%Java8_64%\bin\java -jar myjar.jar
Instead of java 7 version:
java -jar myjar.jar
I had a similar problem where TextMate or something replaced the double quotes with the unicode double quotes.
Changing my SELENIUM_SERVER_JAR from the unicode double quotes to regular double quotes and that solved my problem.
this is because you are looking for the file in the wrong path
1. look for the path of the folder where you placed the file
2. change the directory cd in cmd use the right path
I use NetBeans and had the same issue. After I ran build and clean project my program was executable. The Java documentation says that the build/clean command is for rebuilding the project from scratch basically and removing any past compiles. I hope this helps. Also, I'd read the documentation. Oracle has NetBeans and Java learning trails. Very helpful. Good luck!
Maybe you have specified the wrong version of your jar.
I finally pasted my jar file into the same folder as my JDK so I didn't have to include the paths. I also had to open the command prompt as an admin.
Right click Command Prompt and "Run as administrator"
Navigate to the directory where you saved your jdk to
In the command prompt type: java.exe -jar <jar file name>.jar
Keep the file in same directory where you are extracting it. That worked for me.
This is permission issue, see if the directory is under your User.
That's why is working in another folder!
Rename the jar file and try
Explanation :
yes, I know there are many answers still I want to add one point here which I faced.
I built the jar and I moved it into the server where I deploy (This is the normal process)
here the file name which I moved already existed in the server, here the file will override obviously right. In this case, I faced this issue.
maybe at the time of overriding there can be a permission copy issue.
Hope this will help someone.
Have you tried to run it under administrator privoleges?
meaning, running the command in "Run As" and then select administrator with proper admin credentials
worked for me
I was trying this:
After giving the file read, write, execute priviledges:
chmod 777 java-repl.jar
alias jr="java -jar $HOME/Dev/java-repl/java-repl.jar"
Unable to access bla bla..., this was on Mac OS though
So I tried this:
alias jr="cd $HOME/Dev/java-repl/ && java -jar java-repl.jar"
This did not work "Unable to access jarfile"
"C:\Program Files\java\jdk-13+33-jre\bin\javaw.exe" -jar "C:\Program Files\Maxim Integrated Products\1-Wire Drivers x64\ OneWireViewer.jar"
This does work
"C:\Program Files\java\jdk-13+33-jre\bin\javaw.exe" -jar "C:\Program Files\Maxim Integrated Products\1-Wire Drivers x64\OneWireViewer.jar"
The difference is the single space in front of OneWireViewer.jar not withstanding that it is surrounded with quotes and even has other spaces.
I am able to get localhost:16010 running. But, somehow the Hbase shell is not launching when I use :
01HW993798:bin tcssig$ cd /Users/tcssig/Downloads/hbase-1.0.3/bin
01HW993798:bin tcssig$ hbase shell
-bash: hbase: command not found
When I directly launch Hbase Unix executable, it generates the below error log.
Error: JAVA_HOME is not set
Although I have set it. After this only, the localhost:16010 is running.
NOTE : I know there is one similar question, but no relevant answers are present there.
Using this I am able to invoke the command, but now it gives the error :
./hbase: line 403: /Users/tcssig/Downloads/hbase-
1.0.3/bin/JAVA_HOME:/Library/Java/JavaVirtualMachines/jdk1.8.0_101.jdk/Cont``ents/Home/bin/java: No such file or directory
Although I have java file there.
Your hbase invocation should be like this:
cd /Users/tcssig/Downloads/hbase-1.0.3/bin
./hbase shell [Note the ./]
When you just type hbase shell linux searches for hbase executable in all directories included in PATH environment variable. Since above bin directory is not included it errors out.
Alternatively you can also update your path variable, based on linux distribution, the command to do that may vary. It should be something like:
export PATH=/Users/tcssig/Downloads/hbase-1.0.3/bin:$PATH
Put this command in your .bashrc or .bash_profile and then source this file. That way the bin directory is now included in PATH and hbase command is available.
Go into $HBASE_HOME/bin path, and try:
./hbase shell
I need to launch a Jar file with a portable JRE. It works on Windows thanks to launch4j, it works on Ubuntu thanks to me, but not on Mac ..... and I can't test it.
The path tree of application:
abcmap/
launcher.command
bin/
abcmap.jar
jre/
bin/
java
Thinking it's like Unix system, I tried this (without specify bash):
./bin/jre/bin/java -Xms512m -Xmx1024m -jar ./bin/abcmap.jar
But this error appear:
MacBook-Pro:~ frcstnt$ /Applications/abcmap-mac/abcmap.command;
exit;
/Applications/abcmap-mac/abcmap.command: line 1:
bin/jre/bin/java: No such file or directory
logout
All files are rwx for all,
All files are UTF8 without BOM
I tried to change end of line to Unix and to "Old Mac" with Notepad++,
Archives are available on my website:
http://abc-map.fr/download/
https://translate.google.fr/translate?hl=fr&sl=fr&tl=en&u=http%3A%2F%2Fabc-map.fr%2F
Someone can help me please?
Edit: I think my problem is in the launcher, maybe encoding or bad command ?
Edit: Thanks to the Wim's answer it works. This is the script:
#!/bin/bash
SCRIPTDIR=$(dirname $0)
cd $SCRIPTDIR
${SCRIPTDIR}/bin/jre/bin/java -jar ${SCRIPTDIR}/bin/abcmap.jar
The path ./bin/jre/bin/java will be resolved relative to the current directory, not relative to the location of the command file. Try what happens if you run the command from the directory where the command is located.
I think I've found thanks to Wim Deblauwe. I use this:
#!/bin/bash
SCRIPTDIR=$(dirname $0)
cd $SCRIPTDIR
${SCRIPTDIR}/bin/jre/bin/java -jar ${SCRIPTDIR}/bin/abcmap.jar
Find the script dir, go to this dir and start operations.
It seems like you maybe don't even have the Java Runtime Evironment installed. You should try running java -version or at least java -h or java --help.
If you output is something like the following:
java: command not found
You should download and install the latest JRE and try again.
If, however, you see your java version, try first using cd to go to the directory of your jarfile and then use:
java -jar -otheroptionshere jarfile.jar
I hope this helps! Tell me, if you still got issues.
I am trying to make a eclipse project in Java to launch commands with some buttons. The libraries of Ros fuerte (These ones i want to use) are correctly installed and concretly i am trying to launch a ros command from a Java File using:
String cmd = "roscore";
Runtime rt = Runtime.getRuntime();
Process p = rt.exec(cmd);
If i launch this command from a current terminal it works, but if i do it from the java file i have a problem because the terminal doesnt recognize the command.
java.io.IOException: Cannot run program "roscore": java.io.IOException: error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:475)
at java.lang.Runtime.exec(Runtime.java:610)
at java.lang.Runtime.exec(Runtime.java:448)
at java.lang.Runtime.exec(Runtime.java:345)
at LaunchTerminal.main(LaunchTerminal.java:24)
I think that i need to add some path or similar but i dont find the information. Does anybody know how to do it?
Thank u.
only normal commands are possible to execute like rm or cd ... al others must be referenced with full path of context
Do the following if you are using the groovy distribution:
String cmd = "source /opt/ros/groovy/setup.bash && roscore";
I am trying to run the following code from within Eclipse:
Process process = Runtime.getRuntime().exec("gs");
However I get the exception:
java.io.IOException: Cannot run
program "gs": error=2, No such file or
directory
Running gs from the command prompt (OS X) works fine from any directory as it is on my PATH. It seems eclipse doesn't know about my path environment variable, even though I have gone into run configurations and selected PATH on the environment tab.
In additional effort to debug this issue I tried the following code:
Process process = Runtime.getRuntime().exec("echo $PATH");
InputStream fromStdout = process.getInputStream();
byte[] byteArray = IOUtils.toByteArray(fromStdout);
System.out.println(new String(byteArray));
The output was $PATH, hmm. Can someone nudge me in the correct direction?
you are assuming that exec() uses a shell to execute your commands (echo $PATH is a shell command); for the sake of simplicity you can use System.getenv() to see your $PATH:
System.out.println(System.getenv("PATH"));
EDIT
Often a better and flexible alternative to Runtime.exec() is the ProcessBuilder class.
I had the same issue and i found the problem. The Path Variable in Eclipse had different content than the one from the command Line.
Solution:
Look up for the $Path variable in command Line and copy the content. Then open Run Configuration->Environment and select new. Name: $PATH Value: insert the copied content.
That solved the Problem.