问题
I'm creating a Web Start application which would benefit from some of the newer JVM options (especially escape analysis, G1 garbage collector etc.)
At the same time, I would like the application to work gracefully on older JVMs that do not support these options.
Is there a good way of achieving this?
回答1:
As Thorbjørn mentioned, Java 6 u10 allows multiple j2se elements in JNLP. The JNLP File Syntax resources section of the latest Java Web Start Developer's Guide, indicates that multiple j2se elements, each with java-vm-args attributes can be specified with the most preferred occurring first. For example:
<j2se version="1.3" initial-heap-size="64m" max-heap-size="128m"/>
<j2se version="1.4.2+" href="http://java.sun.com/products/autodl/j2se"
java-vm-args="-esa -Xnoclassgc"/>
来源：https://stackoverflow.com/questions/3494787/enabling-jvm-options-with-java-web-start-jnlp