increase the java heap size permanently?

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Is there a way that I can set the default heap size for the jvm on my own computer? I want to set it to 1g, because I'm always running custom programs that always hit the overage point in the default jvm size.

I just dont want to have to remember to type -XmX1g everytime I run my java app from the command line...

There has to be an admin way to do this right?

jvm-arguments heap-memory size java
5 Answers

For Windows users, you can add a system environment variable named _JAVA_OPTIONS, and set the heap size values there. The JVM should be able to grab the virtual machine options from _JAVA_OPTIONS.

user_1020550

what platform are you running?..
if its unix, maybe adding

alias java='java -Xmx1g'

to .bashrc (or similar) work

edit: Changing XmX to Xmx

adi92_259900

if the platform is Linux, then adding an entry in bash_profile will help.

vim ~/.bash_profile

then add

export _JAVA_OPTIONS="-Xmx4g"
user_88427110
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