Examples of java.util.regex.Pattern.split()

java.util.regex.Pattern.split()

Splits the given input sequence around matches of this pattern.

The array returned by this method contains each substring of the input sequence that is terminated by another subsequence that matches this pattern or is terminated by the end of the input sequence. The substrings in the array are in the order in which they occur in the input. If this pattern does not match any subsequence of the input then the resulting array has just one element, namely the input sequence in string form.

The limit parameter controls the number of times the pattern is applied and therefore affects the length of the resulting array. If the limit n is greater than zero then the pattern will be applied at most n - 1 times, the array's length will be no greater than n, and the array's last entry will contain all input beyond the last matched delimiter. If n is non-positive then the pattern will be applied as many times as possible and the array can have any length. If n is zero then the pattern will be applied as many times as possible, the array can have any length, and trailing empty strings will be discarded.

The input "boo:and:foo", for example, yields the following results with these parameters:

Regex

Limit

Result

: 2 { "boo", "and:foo" }

: 5 { "boo", "and", "foo" }

: -2 { "boo", "and", "foo" }

o 5 { "b", "", ":and:f", "", "" }

o -2 { "b", "", ":and:f", "", "" }

o 0 { "b", "", ":and:f" }

@param input The character sequence to be split @param limit The result threshold, as described above @return The array of strings computed by splitting the inputaround matches of this pattern

Regex	Limit	Result
:	2	`{ "boo", "and:foo" }`
:	5	`{ "boo", "and", "foo" }`
:	-2	`{ "boo", "and", "foo" }`
o	5	`{ "b", "", ":and:f", "", "" }`
o	-2	`{ "b", "", ":and:f", "", "" }`
o	0	`{ "b", "", ":and:f" }`

    }


    public static String[] getLetters(String letters, String pattern)
    {
        Pattern splitter = Pattern.compile(pattern);
        String[] result = splitter.split(letters);


        return result;
    }


    public static String getWebFirstLetter(String address){

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  {
    if (prefixes == null)
      return;
    
    Pattern regexp = Pattern.compile("[,\\s]+");
    String []strings = regexp.split(prefixes);
    for (int i = 0; i < strings.length; i++) {
      String prefix = strings[i];
      String ns = getNamespace(prefix);
      if (ns == null)
        throw error(L.l("`{0}' must be a namespace prefix", prefix));

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            if (this.inputMessage instanceof WSIFMessageElement) {
                QName type = ((WSIFMessageElement) this.inputMessage).getPartType(name);
                if (LEADTypes.isArrayType(type)) {
                    // split string into items using " " as separator
                    Pattern pattern = Pattern.compile("[,\\s]+");
                    String[] result = pattern.split((String) value);
                    XmlElement arrayEl = XmlConstants.BUILDER.newFragment(name);
                    for (int i = 0; i < result.length; i++) {
                        logger.debug("split=" + result[i]);
                        arrayEl.addElement("value").addChild(result[i]);
                    }

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  private static final Pattern SIMPLE_LIST_PATTERN   = Pattern.compile(",");
  private static final Pattern TRIMMED_LIST_PATTERN   = Pattern.compile("\\s*,\\s*");


  private List<String> list(String encodedList, boolean trimmed) {
    Pattern pattern = trimmed ? TRIMMED_LIST_PATTERN : SIMPLE_LIST_PATTERN;
    return encodedList != null ? Arrays.asList(pattern.split(delimited(encodedList))) : Collections.<String> emptyList();
  }




  /**
   * Skip all optional leading and ending delimiters for lists

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  }
  
  private List<String> list(String propertyName, boolean trimmed) {
    Pattern pattern   = trimmed ? TRIMMED_LIST_PATTERN : SIMPLE_LIST_PATTERN;
    String encodedList  = property(propertyName);
    return encodedList != null ? Arrays.asList(pattern.split(delimited(encodedList))) : Collections.<String> emptyList();
  }


  /**
   * Skip all optional leading and ending delimiters for lists
   */

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   * @return an array of split items
   */
  private static String[] split(String text, String keyword) {


    Pattern pattern = Pattern.compile(String.format(KEYWORD_TEMPLATE, keyword));
    return pattern.split(text);
  }


  /**
   * A part of the parsed source that results from splitting up the resource around {@literal Or} keywords. Consists of
   * {@link Part}s that have to be concatenated by {@literal And}.

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    String[] temp;
    int port;
    Boolean bool = false;


    Pattern p = Pattern.compile(":");
    temp = p.split(host);


    InetAddress addr = InetAddress.getByName(temp[0]);
    if (temp.length == 2)
      port = Integer.valueOf(temp[1]).intValue();
    else

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      br = new BufferedReader(new FileReader(branchheadsCache));
      String line = br.readLine();
      if (line == null || line.trim().length() == 0) {
        return lastInCache;
      }
      String[] cacheIdentity = spacePattern.split(line.trim());
      lastInCache = Integer.parseInt(cacheIdentity[1]);
      final int lastKnownRepoRevIndex = repo.getChangelog().getLastRevision();
      if (lastInCache > lastKnownRepoRevIndex || !repo.getChangelog().getRevision(lastKnownRepoRevIndex).equals(Nodeid.fromAscii(cacheIdentity[0]))) {
        // there are chances cache file got invalid entries due to e.g. rollback operation
        return -1;

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      if (lastInCache > lastKnownRepoRevIndex || !repo.getChangelog().getRevision(lastKnownRepoRevIndex).equals(Nodeid.fromAscii(cacheIdentity[0]))) {
        // there are chances cache file got invalid entries due to e.g. rollback operation
        return -1;
      }
      while ((line = br.readLine()) != null) {
        String[] elements = spacePattern.split(line.trim());
        if (elements.length != 2) {
          // bad entry
          continue;
        }
        // I assume split returns substrings of the original string, hence copy of a branch name

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            public Object evaluate(E exchange) {
                String text = evaluateStringExpression(expression, exchange);
                if (text == null) {
                    return null;
                }
                return Arrays.asList(pattern.split(text));
            }


            @Override
            public String toString() {
                return "regexTokenize(" + expression + ", " + pattern.pattern() + ")";

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