Java中的字符串替换 [英] String replace in Java

问题描述

我目前有一个包含字符A，B和C的字符串，例如字符串看起来像

I currently have a string which contains the characters A, B and C for example the string looks like

"A some other random stuff B C"

其他随机的东西不包含A，B或CI想要替换A，B& C分别带有'A'，'B'和'C'，目前我正在做的最好的方法是：

the other random stuff doesn't contain A, B or C I want to replace the A, B & C with 'A', 'B' and 'C' respectively what's the best way to do that currently I'm doing:

String.replace("A", "'A'").replace("B", "'B'").replace("C", "'C'")

推荐答案

如果A，B和C是那些确切的单个字符，则cletus'的答案正常，但如果它们可能是更长的字符串，你只是将它们称为A，B和C。如果它们是更长的字符串你需要做：

cletus' answer works fine if A, B and C are those exact single characters, but not if they could be longer strings and you just called them A, B and C for example purposes. If they are longer strings you need to do:

String input = "FOO some other random stuff BAR BAZ";
String output = input.replaceAll("FOO|BAR|BAZ", "'$0'");

您还需要转义FOO，BAR和BAZ中的任何特殊字符，以便它们不被解释作为特殊的正则表达式符号。

You will also need to escape any special characters in FOO, BAR and BAZ so that they are not interpreted as special regular expression symbols.

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