Extraction d'un mot en java

import java.util.StringTokenizer;

/**
 * 
 * Class: StringExtractor.java
 * 
 * Description: StringExtractor extract an substring from a given String and may
 * convert that String in a particular format.
 * 
 * @author HackTrack
 * 
 * Created on Jul 25, 2007
 * 
 */

public class StringExtractor {

	/**
	 * Extract a long from another String
	 * 
	 * @param text
	 *            The source String
	 * @param afterText
	 *            The String after which the value has to be retrieved
	 * @param untilText
	 *            The String where the extractor must stop for substring
	 *            retrieve
	 * @return The long extracted from String
	 * @throws NumberFormatException
	 *             If String 'afterstring' hasn't been found in the 'source
	 *             String' or if the returned String can't be converted into a
	 *             long
	 */
	public static long extractLong(String text, String afterText, String untilText) throws NumberFormatException {
		return Long.parseLong(extractString(text, afterText, untilText));
	}

	/**
	 * Extract a double from another String
	 * 
	 * @param text
	 *            The source String
	 * @param afterText
	 *            The String after which the value has to be retrieved
	 * @param untilText
	 *            The String where the extractor must stop for substring
	 *            retrieve
	 * @return The double extracted from String
	 * @throws NumberFormatException
	 *             If String 'afterstring' hasn't been found in the 'source
	 *             String' or if the returned String can't be converted into a
	 *             double
	 */
	public static double extractDouble(String text, String afterText, String untilText) throws NumberFormatException {
		return Double.parseDouble(extractString(text, afterText, untilText));
	}

	/**
	 * Extract a int from another String
	 * 
	 * @param text
	 *            The source String
	 * @param afterText
	 *            The String after which the value has to be retrieved
	 * @param untilText
	 *            The String where the extractor must stop for substring
	 *            retrieve
	 * @return The int extracted from String
	 * @throws NumberFormatException
	 *             If String 'afterstring' hasn't been found in the 'source
	 *             String' or if the returned String can't be converted into a
	 *             int
	 */
	public static int extractInt(String text, String afterText, String untilText) throws NumberFormatException {
		return Integer.parseInt(extractString(text, afterText, untilText));
	}

	/**
	 * Extract a String from another String
	 * 
	 * @param text
	 *            The source String
	 * @param afterText
	 *            The String after which the value has to be retrieved
	 * @param untilText
	 *            The String where the extractor must stop for substring
	 *            retrieve
	 * @return The found substring or null if not found
	 */
	public static String extractString(String text, String afterText, String untilText) {
		int afterTextIndex = text.indexOf(afterText);
		String tempStr = text.substring(afterTextIndex + afterText.length());
		int untilTextIndex = tempStr.indexOf(untilText);
		tempStr = tempStr.substring(0, untilTextIndex);
		return tempStr;
	}

	public static void main(String[] args) {
		String text = "At 5.0043376036883105 : MAC addr:1--- received DATA frame { sz570(MAC-802.11_Data_Frame)sz58--Data Frame--duration:218--Address1:1--address2:101--Address3:0--Address4:-2--forcedError:false--__<sz512(INET)sz20--src:0--dest:1--prot:17--TTL:6/255--ToS:#0--label:0--nexthop:1__<sz492(UDP)sz8--s:50--d:1050__<id:1 generation time:5.000372 delay bound:0.03 src: 0>__>__>__ } ";
		String afterText = "generation time:";
		String untilText = " ";
		System.out.println(StringExtractor.extractDouble(text, afterText, untilText));
	}
}