It can be scheduled when convenient by the JVM and any impact of the garbage collector is immaterial.

JVM可能在任何方便的时候调度它们，垃圾回收产生的影响也是微不足道的。

youdao

We can embrace the relational database, dropping down into SQL as needed and staying above it when convenient.

我们可以包含关系数据库，需要时转入SQL并在适当的时候退出。

youdao

Can you spare five minutes when it's convenient?

方便时能占用你五分钟时间吗？

《牛津词典》

So it's convenient if you wanna check and see when the next bus is coming.

用手机可以查下一趟车什么时候来，非常方便。

没有智能手机活不了 - SpeakingMax英语口语达人

Long passages have been kept to a minimum, and when they do appear, are mostly located in pop-up boxes and can even be printed and read when convenient.

UNESCO: Introducing the TLSF Dissemination & Training Toolbox

We must follow it not only when it is convenient, but when fear and danger beckon in a different direction.

FORBES: Justice, Dispensed with an Even Hand

The measures he supports would severely hurt the future of the mortgage industry: What private entity, for instance, would extend mortgages, knowing that Washington politicians would be empowered to change the terms when politically convenient, instead of letting lenders and borrowers see if they could work something out that would take each particular situation into account?

FORBES: Fact and Comment