如何使用Java的String.replaceAll方法替换以$开头的String

Question

What's the correct regex for a String starting with $ char as the first argument (ie the string to replace) to Java's replaceAll method in the String class? I can't get the syntax right. Example

String s = "SUMIF($C$6:$C$475,\"   India - Hyd\",K$6:K$475)";
System.out.println(s.replaceAll("$475", "$44"));

Answer 1

在这种情况下，我建议您使用replace()而不是replaceAll() ，因为您没有使用任何正则表达式：

System.out.println(s.replace("$475", "$44"));

Answer 2

这应该工作：

System.out.println(s.replaceAll("\\$475", "\\$44"));

Answer 3

Documentation of string.replace() states that

public String replace(CharSequence target, CharSequence replacement)

Replaces each substring of this string that matches the literal target sequence with the specified literal replacement sequence.

So you can use replace method instead of replaceAll.

String s = "SUMIF($C$6:$C$475,\"   India - Hyd\",K$6:K$475)";
System.out.println(s.replace("$475", "$44"));