Example usage for java.util.regex Matcher group

Introduction

In this page you can find the example usage for java.util.regex Matcher group.

Prototype

public String group()

Source Link

Document

Returns the input subsequence matched by the previous match.

Usage

From source file:StartEnd.java

public static void main(String[] args) {
    String[] input = new String[] { "Java has regular expressions in 1.4",
            "regular expressions now expressing in Java", "Java represses oracular expressions" };
    Pattern p1 = Pattern.compile("re\\w*"), p2 = Pattern.compile("Java.*");
    for (int i = 0; i < input.length; i++) {
        System.out.println("input " + i + ": " + input[i]);
        Matcher m1 = p1.matcher(input[i]), m2 = p2.matcher(input[i]);
        while (m1.find())
            System.out.println("m1.find() '" + m1.group() + "' start = " + m1.start() + " end = " + m1.end());
        while (m2.find())
            System.out.println("m2.find() '" + m2.group() + "' start = " + m2.start() + " end = " + m2.end());
        if (m1.lookingAt()) // No reset() necessary
            System.out.println("m1.lookingAt() start = " + m1.start() + " end = " + m1.end());
        if (m2.lookingAt())
            System.out.println("m2.lookingAt() start = " + m2.start() + " end = " + m2.end());
        if (m1.matches()) // No reset() necessary
            System.out.println("m1.matches() start = " + m1.start() + " end = " + m1.end());
        if (m2.matches())
            System.out.println("m2.matches() start = " + m2.start() + " end = " + m2.end());
    }//from   ww w  . ja  va 2s  .  c  om
}

From source file:Main.java

public static void main(String[] args) {
    String patternStr = "b";
    Pattern pattern = Pattern.compile(patternStr);

    CharSequence inputStr = "a b c b";
    Matcher matcher = pattern.matcher(inputStr);
    boolean matchFound = matcher.find();
    System.out.println(matchFound);

    String match = matcher.group();
    System.out.println(match);// ww  w. jav  a  2s.  c o  m

    int start = matcher.start();
    int end = matcher.end();
    System.out.println(start);
    System.out.println(end);
    matchFound = matcher.find();
}

From source file:Main.java

public static void main(String[] args) {
    String s = "(123, 234; 345, 456) (567, 788; 899, 900)";
    Matcher m = Pattern.compile("\\d+").matcher(s);
    List<Integer> numbers = new ArrayList<Integer>();
    while (m.find()) {
        numbers.add(Integer.parseInt(m.group()));
    }//from w ww  . j av a 2 s  . com
    System.out.println(numbers);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {

    Pattern pattern = Pattern.compile("pattern");
    Matcher matcher = pattern.matcher("infile.txt");

    // Find all matches
    while (matcher.find()) {
        // Get the matching string
        String match = matcher.group();
    }//w  ww .  ja  v  a  2 s.  c o  m
}

From source file:MainClass.java

public static void main(String args[]) {

    String phrase = "a word word";
    String duplicatePattern = "\\b(\\w+) \\1\\b";

    Pattern p = null;/*from  ww w.j  a  va2  s  .  co  m*/
    try {
        p = Pattern.compile(duplicatePattern);
    } catch (PatternSyntaxException pex) {
        pex.printStackTrace();
        System.exit(0);
    }
    // count the number of matches.
    int matches = 0;

    // get the matcher
    Matcher m = p.matcher(phrase);
    String val = null;

    // find all matching Strings
    while (m.find()) {
        val = ":" + m.group() + ":";
        System.out.println(val);
        matches++;
    }
}

From source file:Main.java

public static void main(String[] args) { // main method
    Pattern pattern = Pattern.compile("(?<=sentence).*");
    Matcher matcher = pattern.matcher("this is a test!");
    boolean found = false;
    while (matcher.find()) { // if it is found
        System.out.println("I found the text: " + matcher.group().toString());
        found = true;/* w w  w  . j  a  va  2  s.co  m*/
    }
    if (!found) { // if not
        System.out.println("I didn't find the text."); // say it wasn't found
    }
}

From source file:Main.java

public static void main(String args[]) {
    Pattern p = Pattern.compile("java", Pattern.CASE_INSENSITIVE);

    String candidateString = "Java. java JAVA jAVA";

    Matcher matcher = p.matcher(candidateString);

    // display the latter match
    System.out.println(candidateString);
    matcher.find(11);//from  www .java  2  s .c o  m
    System.out.println(matcher.group());

    // display the earlier match
    System.out.println(candidateString);
    matcher.find(0);
    System.out.println(matcher.group());
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    // Create matcher on file
    Pattern pattern = Pattern.compile("pattern");
    Matcher matcher = pattern.matcher(fromFile("infile.txt"));

    // Find all matches
    while (matcher.find()) {
        // Get the matching string
        String match = matcher.group();
    }/*from  w  w  w.  j ava 2  s .c o m*/
}

From source file:MainClass.java

public static void main(String[] args) {
    Pattern p = Pattern.compile("^java", Pattern.CASE_INSENSITIVE | Pattern.MULTILINE);
    Matcher m = p.matcher("java has regex\nJava has regex\n" + "JAVA has pretty good regular expressions\n"
            + "Regular expressions are in Java");
    while (m.find())
        System.out.println(m.group());
}

From source file:Main.java

public static void main(String[] argv) throws Exception {

    CharSequence inputStr = "ab12 cd efg34 123";
    String patternStr = "([a-zA-Z]+[0-9]+)";

    Pattern pattern = Pattern.compile(patternStr);
    Matcher matcher = pattern.matcher(inputStr);

    StringBuffer buf = new StringBuffer();
    boolean found = false;
    while ((found = matcher.find())) {
        String replaceStr = matcher.group();
        matcher.appendReplacement(buf, "found<" + replaceStr + ">");
    }//  w  w w  . j  a va 2  s.c o m
    matcher.appendTail(buf);

    String result = buf.toString();
    System.out.println(result);
}