Specifying JVM arguments when calling a jar file?

Question

I want to specify some JVM arguments when calling a jar file like so:

java -jar filename.jar

I assumed I did it like so:

java -Xms256m -Xmx512m -Djava.awt.headless=true jar filename.jar

But this doesn't seem to work. What am I doing wrong?

score 102 · Accepted Answer · answered May 04 '11 at 23:47

102

Do it like:

java -Xms256m -Xmx512m -Djava.awt.headless=true -jar filename.jar

answered May 04 '11 at 23:47

CRM

Thanks. This doesn't seem to work, so perhaps I have another issue. – Dominic Bou-Samra May 04 '11 at 23:52
@Dominic Bou-Samra How are you testing that? – CRM May 04 '11 at 23:53
1

@Dominic Bou-Samra You can try to use JConsole to test the memory sizes of the Heap. – CRM May 05 '11 at 00:01
If you are not familiar with JCOncole, here is a good [link](http://download.oracle.com/javase/6/docs/technotes/guides/management/jconsole.html) about it. I hope it helps. – CRM May 05 '11 at 00:22
Thanks! Got it sorted. Thanks for the JConsole tip. Worked well – Dominic Bou-Samra May 05 '11 at 01:53
4

Make sure the `-jar filaname.jar` is at the end. Doesn't work if `-Dmyarg=true` is after `-jar` – Arboreal Shark Oct 08 '20 at 20:13

score 9 · Answer 2 · edited Mar 05 '19 at 18:12

9

java [Options] -jar  [jarfile] [Command Line Arguments]

Please refer

edited Mar 05 '19 at 18:12

answered Jul 30 '16 at 07:05

Mohan Raj

score 4 · Answer 3 · edited Aug 25 '17 at 08:54

4

hype jar was missing , try

java -Xms256m -Xmx512m -Djava.awt.headless=true -jar

edited Aug 25 '17 at 08:54

aristotll

answered Jul 29 '16 at 21:16

senthil sivasamy

score 4 · Answer 4 · answered May 04 '11 at 23:47

4

Don't put a space between the -D and java.awt.headless=true.

It should be -Djava.awt.headless=true.

answered May 04 '11 at 23:47

Steven Fines

4 Answers4