Using syntactic methods rather than libraries can give you better code in the long run since the compiler and jvm , working together , can perform optimizations that would be difficult or impossible with a library approach 這是因為編譯器和java虛擬器( jvm )能一同優(yōu)化程序代碼,而這些優(yōu)化對于類庫中的代碼是很難或無法實現(xiàn)的。