char « replace « Java Regex Q&A

1. replace a set of characters with another set of chars (in pair): "&", "&" "<", "<" etc. in regex    stackoverflow.com

I have to encode the 5 XML reserved chars (& < > " and ') properly as follows:

"&", "&amp;" "<", "&lt;" ">", "&gt;"
   "\"", "&quot;" "\'", "&apos;"

2. Replace "^" char    stackoverflow.com

I'm trying to replace the "^" character on a String using:

String text = text.replaceAll("^", "put this text");

"x^my string"

"put this textx^my string"

3. How avoid replacement of new line char in regex string replacement?    coderanch.com

Hi all, I have the following code, public static void test2() { String newLine = System.getProperty("line.separator"); String TOKEN="TOKEN"; String s = "abc maulin vasavada"; StringBuffer sb = new StringBuffer(); sb.append(s).append(newLine). append(s).append(newLine). append(s); String s1 = sb.toString(); System.out.println(s1); s1 = s1.replaceAll("\\s+",TOKEN); System.out.println(s1); } Here the problem is, "\\s+" pattern matches the newlines in the string and replace them with TOKEN. I want ...