Java regular expression and escaping meta characters

Question

I am trying to write regexp for matching token embedded between two curly braces. For example if buffer Hello {World}, I want to get "World" token out of String. When I use regexp like \{*\} eclipse shows a error messages as

Invalid escape sequence (valid ones are \b \t \n \f \r \" \' \\)

Can anyone please help me? I am new to using regular expressions.

Answer 1

Use this code to match string between { and }

String str = "if buffer Hello {World}";
Pattern pt = Pattern.compile("\\{[^}]*\\}");
Matcher m = pt.matcher(str);
if (m.find()) {
    System.out.println(m.group());
}

RegEx Details:

• \\{: Match opening {
• [^}]*: Match 0 or more of any characters that are not }
• \\}: Match closing }