Java .replaceAll() for $ and \

Question

I have use the replaceAll() function in my Java ireport for one of the text field. The following codes need to replace all the matche strings to $ sign or \ character . However, it is only work for replace() function only.

$P{name}.replaceAll('abc', '\$');

or

$P{name}.replaceAll('abc', '\\');

Answer 1

Use double escape character \

String str = "abc-d-abc";
str = str.replaceAll("abc", "\\$");
System.out.println(str);

String str1 = "abc-d-abc";
str1 = str1.replaceAll("abc", "\\\\");
System.out.println(str1);

replace: It will replace all occurrence of Character/String matched in String. replace can't process Regular Expression.

replaceAll: It will replace all occurrence of Character/String matched in String. replaceAll can process Regular Expression. Its slower because it has to process regular expression