String.replaceAll single backslashes with double backslashes

by

The String#replaceAll() interprets the argument as a regular expression. The \ is an escape character in both String and regex. You need to double-escape it for regex:

string.replaceAll("\\\\", "\\\\\\\\");

But you don’t necessarily need regex for this, simply because you want an exact character-by-character replacement and you don’t need patterns here. So String#replace() should suffice:

string.replace("\\", "\\\\");

Update: as per the comments, you appear to want to use the string in JavaScript context. You’d perhaps better use StringEscapeUtils#escapeEcmaScript() instead to cover more characters.

More Related Contents:

  1. How to escape the backslashes and the automatically generated escape character in file path in java
  2. Replace string \ with / android [duplicate]
  3. How do i find the first un-escaped quotes in Java?
  4. Java – escape string to prevent SQL injection
  5. How to unescape a Java string literal in Java?
  6. How to escape text for regular expression in Java
  7. What are all the escape characters?
  8. How to enter quotes in a Java string?
  9. How should I escape strings in JSON?
  10. In Java, is there a way to write a string literal without having to escape quotes?
  11. How can I make Java print quotes, like “Hello”?
  12. How to escape apostrophe or quotes on a JSP (used by JavaScript)
  13. Escaping special characters in Java Regular Expressions
  14. Java: Literal percent sign in printf statement
  15. How to escape the equals sign in properties files
  16. How can I escape special HTML characters in JSP?
  17. String replace a Backslash
  18. How do I escape a string in Java?
  19. Escape double quotes in Java [duplicate]
  20. Convert International String to \u Codes in java
  21. How do you escape colon (:) in Properties file?
  22. How to replace ” \ ” with ” \\ ” in java
  23. How to escape a square bracket for Pattern compilation?
  24. Colorize logs in eclipse console
  25. Java: how to get a File from an escaped URL?
  26. Java escape HTML
  27. Illegal Escape Character “\”
  28. Using hibernate criteria, is there a way to escape special characters?
  29. How can you escape the @ character in javadoc?
  30. Make hibernate backquote all table / column names

Leave a Comment