所以我在eclipse中用java做一个minecraft mod，任何时候我想在eclipse中启动它来测试它不起作用我得到以下输出：
Error occurred during initialization of VM
Could not reserve enough space for 1048576KB object heap
Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
我该怎么办？显然这个问题不是关于RAM不存在，我有6GB，这是关于java不被允许接受它。