Can command-line set Java system properties be distinguished from the defaults? -

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is there way distinguish java system property has been set command line using -d option system property got same value default?

e.g., program

class test {   public static void main(string[] args) {     system.out.println(system.getproperty("user.home"));   } }

prints

/home/uckelman

for me regardless of whether run 

java test

or 

java -duser.home=/home/uckelman test

is there jdk provides test distinguish these 2 situations?

one way command line arguments used start jvm , check returned list if given system property set or not.

runtimemxbean mx = managementfactory.getruntimemxbean(); system.out.println("command line args:\n" + mx.getinputarguments());

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