I have just installed Java SE Development Kit 8u91 on my 64 bit Windows-10 OS. I set my path variables . I tried java --version in my command prompt it gave me an error.
c:\Users\Onlymanu>java --version
Unrecognized option: --version
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
But when i tried java -version it worked.
I tried initializing _JAVA_OPTIONS environment variable and ever tried re-installation none of them worked. Can any one help me please?
Java 8:
java -version
Java 9+:
java --version
I was facing a similar issue. Actually the command is :
java -version and not java --version.
You will get output something like this:
java version "1.8.0_162"
Java(TM) SE Runtime Environment (build 1.8.0_162-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.162-b12, mixed mode)
I think you have put command like java -VERSION
. This is in capital letters
You need to put all command in lowercase letters
javac -version
java -version
All characters must be in lowercase letter
java -version
java -showversion
Both commands work In Linux 16.04 LTS
the command should be java -version
Try executing below command,
java -help
It gives option as,
-version print product version and exit
java -version is the correct command to execute
Your command is wrong.
Linux
java -- version
macOS
java -version
You can't use those commands other way around.
--version
is a valid option from JDK 9 and it is not a valid option until JDK 8 hence you get the below:
Unrecognized option: --version
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
You can try installing JDK 9 or any version later and check for java --version
it will work.
Alternately, from the installed JDK 9 or later versions you can see from java -help
the below two options will be available:
-version print product version to the error stream and exit
--version print product version to the output stream and exit
where as in JDK 8 you will only have below when you execute java -help
-version print product version and exit
I hope it answers your question.
Source: Stackoverflow.com