How to retrieve Java vendor information

Question

How can I retrieve Java vendor information without having to compile and run following script:

import java.util.Properties;
public class test
{
    public static void main(String args[])
    {
            Properties prop = System.getProperties();
            System.out.println ("JVM Vendor : " + prop.getProperty("java.vendor") );
    }
}

I couldn't find it in command line options.

Answer 1

Note: The following will work for the Oracle JVM - not tested on others. (To get details on non-standard options execute java -X )

You can use the non-standard -XshowSettings flag to show all settings, or alternatively -XshowSettings:properties to show all property settings.

So for example if you execute the following command:

java -XshowSettings:properties -version

This will show you all properties one of which is java.vendor . Not sure if it is possible to get it to output just a single property though.

Answer 2

如果是JDK运行jvisualvm，请打开VisualVM应用程序，转到“系统属性”选项卡

Answer 3

If you have any running java app 'jinfo' is your friend:

Usage:
jinfo [option] <pid>
    (to connect to running process)
jinfo [option] <executable <core>
    (to connect to a core file)
jinfo [option] [server_id@]<remote server IP or hostname>
    (to connect to remote debug server)

where <option> is one of:
-flag <name>         to print the value of the named VM flag
-flag [+|-]<name>    to enable or disable the named VM flag
-flag <name>=<value> to set the named VM flag to the given value
-flags               to print VM flags
-sysprops            to print Java system properties
<no option>          to print both of the above
-h | -help           to print this help message

So

jinfo -sysprops <pid of javaprocess> | grep "java.vendor = "

gives you the system property.

Beware :

Also note that the value of system properties can be overwritten! For example, if myProperties.txt contains the following line, the java.vendor system property will be overwritten:

java.vendor=Acme Software Company

Answer 4

You may use below command

$ java -XshowSettings:properties -version 

Below is good blog on JAVA properties for Linux and Windows

Retrieve JAVA properties & Version information

Answer 5

if it's Tomcat goto: TOMCAT_HOME/bin/

and then execute the version.sh file (*eg ./version.sh).