Re: java regular expression problem

Jeffrey Schwab <>
Mon, 31 Jul 2006 22:07:59 GMT
hiwa wrote:

hiwa ??????????????????: ??????????????????:


I want to replace mulitple occurances of a string one after the another
with a single string

for eg .

input : a hello b world c java abcabcabc
output: a hello b world c java def

I mean multiple occurances of pattern 'abc' with a single string 'def'.

how can do this with JAVA regular expressions ?

I tried replaceAll method in string class, but I dont know how to
format regular expression.


public class Ranu{
  public static void main(String[] args){
    String text = "a hello b world c java abcabcabc";

    System.out.println(text.replaceAll("(?:abc)+", "def"));

System.out.println(text.replaceAll("(?:abc){2,}", "def"));

For clarity to the OP: This version replaces multiple occurrences, but
not a stand-alone occurrence. E.g., XabcabcX becomes XdefX, but XabcX
remains XabcX.

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