StringBuffer使用append提示String concatenation as argument to 'StringBuffer.append()' call

昨天发现一个IDE提示:

String concatenation as argument to 'StringBuffer.append()' call less... (Ctrl+F1)

Reports String concatenation used as the argument to StringBuffer.append(),StringBuilder.append() orAppendable.append(). Such calls may profitably be turned into chained append calls on the existingStringBuffer/Builder/Appendable, saving the cost of an extraStringBuffer/Builder allocation.

This inspection ignores compile time evaluated String concatenations, which when converted to chained append calls would only worsen performance.     


StringBuffer使用append提示String concatenation as argument to 'StringBuffer.append()' call


这段英文看的意思不是很明白怎么回事,



代码大概是这样的后面还有很多 append 。

后来我才反应过来,是里面的参数的问题。

本来  append 方法就是拼接字符串用的,而参数里面又用了 + 加号来拼接字符串,于是就提示你应该用 append 将这些字符串作为参数来使用~~~


不过如果真的全用 append 来写的话,那这段代码阅读起来可就要命了,所以还是忽略这个提示了