使用字符包装器将字符串中的字母替换为保留原始大小写的新字母 [英] Use character wrapper to code a replace a letter in a string with a new letter keeping the original case

问题描述

尝试找出如何使用字符包装根据用户输入来变更字符串。如果string是'Bob loves to build building'，并且用户选择用T / t替换所有字母B / b，我怎么需要对它进行编码才能得到'Tom喜欢到建造Tuildings'？

Trying to figure out how to use character wrapping to mutate a string based on user input. If string is 'Bob loves to build building' and user chooses to replace all letter B/b with T/t how do I need to code it to get 'Tom loves to tuild tuildings'?

推荐答案

我认为有一个String类内置的替换函数。

I think there is a String class built-in replace function.

String text = "Bob loves to build building";
text = text.replace("B","T").replace("b","t");

这样？

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