Set multiple system properties Java command line

Question

Is there an easier way to specify multiple System Properties on the command line to a Java program rather than having multiple -D statements   Trying to avoid this    java -jar -DNAME  myName  -DVERSION  1 0  -DLOCATION  home  program jar   I thought I had seen an example of someone using one -D and some quoted string after that  but I can t find the example again

User · Answer

Instead of passing the properties as an argument  you may use a  properties for storing them

User · Answer

Answer is NO  You might have seen an example where somebody would have set something like     -DArguments a 1 b 2 c 3 d 4 e cow   Then the application would parse value of Arguments property string to get individual values  In your main you can get the key values as Assuming input format is guaranteed    String line   System getProperty  Arguments    if line    null      String str     line split           for int i 1 i lt str length i             String arr     str i  split               System out println  Key       arr 0            System out println  Value        arr 1              Also  the -D should be before the main class or the jar file in the java command line  Example   java  -DArguments a 1 b 2 c 3 d 4 e cow MainClass

User · Answer

There s nothing on the Documentation that mentions about anything like that   Here s a quote      -Dproperty value       Set a system property value  If value is a string that   contains spaces  you must enclose the string in double quotes       java -Dfoo  some string  SomeClass

User · Answer

If the required properties need to set in system then there is no option than -D But if you need those properties while bootstrapping an application then loading properties through the properties files is a best option  It will not require to change build for a single property

User · Answer

You may be able to use the JAVA TOOL OPTIONS environment variable to set options  It worked for me with Rasbian  See Environment Variables and System Properties which has this to say      In many environments  the command line is not readily accessible to   start the application with the necessary command-line options       This often happens with applications that use embedded VMs  meaning   they use the Java Native Interface  JNI  Invocation API to start the   VM   or where the startup is deeply nested in scripts  In these   environments the JAVA TOOL OPTIONS environment variable can be useful   to augment a command line       When this environment variable is set  the JNI CreateJavaVM function    in the JNI Invocation API   the JNI CreateJavaVM function adds the   value of the environment variable to the options supplied in its   JavaVMInitArgs argument    However this environment variable use may be disabled for security reasons      In some cases  this option is disabled for security reasons  For   example  on the Oracle Solaris operating system  this option is   disabled when the effective user or group ID differs from the real ID    See this example showing the difference between specifying on the command line versus using the JAVA TOOL OPTIONS environment variable

[java] Set multiple system properties Java command line

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