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Java substring replacement

I am looking for a good method for doing substring replacement.
For example, the string is "Experts collaborate with you to find solutions! Make their job easier by clearly describing your issue with specific information." and I want to replace the substring "you" to let say "Jack Bauer". I was wondering which method is the best! Please show code example! Thanks!
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alfredng1
Asked:
alfredng1
2 Solutions
 
RishadanPortCommented:
const string varToRemove = "you";
const string varToRemove2 = "You";
const string varToReplace = "Jack Bauer";

string.replace(varToRemove, varToReplace);

string.replace(varToRemove2, varToReplace);
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basav_comCommented:
You need to use  'replace' method of String.
Here is the example:
  String str="How are you";
  str = str.replace("you","John");
  System.out.println(str);
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basav_comCommented:
Same solution at the same time ;)
ID:22619880Author:RishadanPortDate:10.02.2008 at 04:23AM IST
ID:22619881Author:basav_comDate:10.02.2008 at 04:23AM IST

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vericksonCommented:


Use the Pattern and Matcher classes (import java.util.regex.*;)

http://java.sun.com/j2se/1.4.2/docs/api/java/util/regex/Pattern.html 


String str = "You are sad.";
System.out.println("Before:" + str);
 
Pattern pattern = Pattern.compile("sad"); // Pattern is "sad"
Matcher match = pattern.matcher(str);     // Apply the pattern to str
 
String newStr = match.replaceAll("happy");  // Replace "sad" with "happy" and store in newStr
System.out.println("After: " + newStr);

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mbodewesCommented:
It depends a bit on what kind of functionality you are looking for. You probably would not want to replace "you" in "your" with Jack Bauer, whoever that is.

So then you would have to do something like:



	final String yourEx = "^(.*\\W)you(\\W.*)$";
		final Pattern yourPattern = Pattern.compile(yourEx);
		final Matcher yourMatcher = yourPattern.matcher("Experts collaborate with you to find solutions! Make their job easier by clearly describing your issue with specific information.");
		if(!yourMatcher.matches()) {
			throw new RuntimeException("No matches found, this is bad");
		}
		final String bauerStr = yourMatcher.group(1) + "Jack Bauer" + yourMatcher.group(2);
		System.out.printf("The new string is: \"%s\"%n", bauerStr);
	

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mbodewesCommented:
Checked with Eclipse and QuickREx by the way, use the right tool for the right job.
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