怎样实现Java编写的软件的限时使用?

[andiyang]

I have a question want to ask to u! my project is a trial versions now. and I want to time limted demo which runs for 30 days for my user!
for example http://big.faceless.org/products/download.jsp
I donnot how to implement it use java!
Best regard !
andiyang

[newman0708]

你写的清楚点，让人无法理解你的意思。

[steeven]

write your installed date to property file. and compare it each time.

don't hope to encrypt your soft ware using java... for example..JBuilder :)

[steeven]

it's too easy to be cracked

[dylanwolf]

Maybe you can try to use registry

There's a JNIRegistry package you can use for operation on the registry.