先有一字符串
String content ="
Your life can be enhanced, and your happiness enriched, when you choose to change your perspective. Don't leave your future to chance,";现在我要把以“your”(不分大小写) 开头的，以“，”结尾的中间的部分换成**转完之后也就是content="Your ** , and your ** , when you choose to change your ** ,";这个怎么实现呢？
String content ="
Your life can be enhanced, and your happiness enriched, when you choose to change your perspective. Don't leave your future to chance,";现在我要把以“your”(不分大小写) 开头的，以“，”结尾的中间的部分换成**转完之后也就是content="Your ** , and your ** , when you choose to change your ** ,";这个怎么实现呢？
replace
([Yy]our\s).*([,])
group[1]**group[2]