Example usage for java.util.regex Pattern matcher

Introduction

In this page you can find the example usage for java.util.regex Pattern matcher.

Prototype

public Matcher matcher(CharSequence input) 

Source Link

Document

Creates a matcher that will match the given input against this pattern.

Usage

From source file:Main.java

public static void main(final String[] args) {
    final String[] lines = new String[] { "1. New", "2. UK", "3. France" };

    final Pattern p = Pattern.compile("\\.\\s+(.*?)\\s+-\\s+(.*)");

    for (final String unparsedText : lines) {
        String newspaper;/*from   w ww. j ava  2  s.co m*/
        String country;

        final Matcher m = p.matcher(unparsedText);

        if (m.find()) {
            newspaper = m.group(1);
            country = m.group(2);

            System.out.println("Newspaper: " + newspaper + " Country: " + country);
        }
    }
}

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From source file:Main.java

public static void main(String args[]) {
    Pattern p = Pattern.compile("(another) (test)");
    StringBuffer sb = new StringBuffer();

    String candidateString = "This is another test.";

    String replacement = "$1 AAA $2";
    Matcher matcher = p.matcher(candidateString);
    matcher.find();//from  ww  w  .  j  a  v  a  2s.c  om

    matcher.appendReplacement(sb, replacement);
    String msg = sb.toString();
    System.out.println(msg);
}

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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());
    }//  w  ww  .  j  a va  2 s.co  m
}

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From source file:MainClass.java

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

    String candidateString_1 = "Java is Java";
    String candidateString_2 = "J2SE is Java";
    String candidateString_3 = "J2SEisJava";

    Matcher matcher = p.matcher(candidateString_1);
    String msg = ":" + candidateString_1 + ": matches?: ";
    System.out.println(msg + matcher.lookingAt());

    matcher.reset(candidateString_2);/*from  w  w  w. j av a 2s.c o  m*/
    msg = ":" + candidateString_2 + ": matches?: ";
    System.out.println(msg + matcher.lookingAt());

    matcher.reset(candidateString_3);
    msg = ":" + candidateString_3 + ": matches?: ";
    System.out.println(msg + matcher.lookingAt());

}

---

From source file:MatcherAppendReplacementGroupExample.java

public static void main(String args[]) {
    Pattern p = Pattern.compile("(James) (Bond)");
    StringBuffer sb = new StringBuffer();

    String candidateString = "My name is Bond. James Bond.";

    String replacement = "$1 Waldo $2";

    Matcher matcher = p.matcher(candidateString);
    matcher.find();//from ww w. j a v a  2  s .  c  o m

    matcher.appendReplacement(sb, replacement);

    String msg = sb.toString();
    System.out.println(msg);
}

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From source file:com.github.liyp.test.TestMain.java

@SuppressWarnings("unchecked")
public static void main(String[] args) {
    // add a shutdown hook to stop the server
    Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
        @Override//  www .jav a  2 s. c  o m
        public void run() {
            System.out.println("########### shoutdown begin....");
            try {
                Thread.sleep(10000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("########### shoutdown end....");
        }
    }));

    System.out.println(args.length);
    Iterator<String> iterator1 = IteratorUtils
            .arrayIterator(new String[] { "one", "two", "three", "11", "22", "AB" });
    Iterator<String> iterator2 = IteratorUtils.arrayIterator(new String[] { "a", "b", "c", "33", "ab", "aB" });

    Iterator<String> chainedIter = IteratorUtils.chainedIterator(iterator1, iterator2);

    System.out.println("==================");

    Iterator<String> iter = IteratorUtils.filteredIterator(chainedIter, new Predicate() {
        @Override
        public boolean evaluate(Object arg0) {
            System.out.println("xx:" + arg0.toString());
            String str = (String) arg0;
            return str.matches("([a-z]|[A-Z]){2}");
        }
    });
    while (iter.hasNext()) {
        System.out.println(iter.next());
    }

    System.out.println("===================");

    System.out.println("asas".matches("[a-z]{4}"));

    System.out.println("Y".equals(null));

    System.out.println(String.format("%02d", 1000L));

    System.out.println(ArrayUtils.toString(splitAndTrim(" 11, 21,12 ,", ",")));

    System.out.println(new ArrayList<String>().toString());

    JSONObject json = new JSONObject("{\"keynull\":null}");
    json.put("bool", false);
    json.put("keya", "as");
    json.put("key2", 2212222222222222222L);
    System.out.println(json);
    System.out.println(json.get("keynull").equals(null));

    String a = String.format("{\"id\":%d,\"method\":\"testCrossSync\"," + "\"circle\":%d},\"isEnd\":true", 1,
            1);
    System.out.println(a.getBytes().length);

    System.out.println(new String[] { "a", "b" });

    System.out.println(new JSONArray("[\"aa\",\"\"]"));

    String data = String.format("%9d %s", 1, RandomStringUtils.randomAlphanumeric(10));
    System.out.println(data.getBytes().length);

    System.out.println(ArrayUtils.toString("1|2| 3|  333||| 3".split("\\|")));

    JSONObject j1 = new JSONObject("{\"a\":\"11111\"}");
    JSONObject j2 = new JSONObject(j1.toString());
    j2.put("b", "22222");
    System.out.println(j1 + " | " + j2);

    System.out.println("======================");

    String regex = "\\d+(\\-\\d+){2} \\d+(:\\d+){2}";
    Pattern pattern = Pattern.compile(regex);
    Matcher matcher = pattern.matcher("2015-12-28 15:46:14  _NC250_MD:motion de\n");
    String eventDate = matcher.find() ? matcher.group() : "";

    System.out.println(eventDate);
}

---

From source file:PositiveLookBehindExample.java

public static void main(String args[]) throws Exception {
    String regex = "(?<=http://)\\S+";

    Pattern pattern = Pattern.compile(regex);

    String candidate = "The Java2s website can be found at ";
    candidate += "http://www.java2s.com. There, ";
    candidate += "you can find some Java examples.";

    Matcher matcher = pattern.matcher(candidate);

    while (matcher.find()) {
        String msg = ":" + matcher.group() + ":";
        System.out.println(msg);//from   w  ww .j a  v  a  2 s  .  c o  m
    }
}

---

From source file:Grep.java

public static void main(String args[]) throws Exception {
    String regex = "";
    InputStream in = System.in;

    regex = args[0];/*  w w w  . j  a v  a 2 s  .co m*/
    in = new BufferedInputStream(new FileInputStream(args[1]));
    Pattern p = null;

    p = Pattern.compile(regex);

    BufferedReader buff = new BufferedReader(new InputStreamReader(in));

    String a;
    for (a = buff.readLine(); a != null; a = buff.readLine()) {
        Matcher m = p.matcher(a);
        if (m.find()) {
            System.out.println(a);
        }
    }
}

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From source file:ValidationTestWithPatternAndMatcher.java

public static void main(String args[]) {
    Pattern p = null;
    try {//from  w  w  w.j av a2 s. c  o  m
        p = Pattern.compile("Java \\d");
    } catch (PatternSyntaxException pex) {
        pex.printStackTrace();
        System.exit(0);
    }

    String candidate = "I love Java 5";
    Matcher m = p.matcher(candidate);

    System.out.println("result=" + m.find());
}

---

From source file:PositiveLookBehindExample.java

public static void main(String args[]) throws Exception {
    String regex = "(?<=http://)\\S+";

    Pattern pattern = Pattern.compile(regex);

    String candidate = "The Java2s website can be found at ";
    candidate += "http://www.java2s.com. There, ";
    candidate += "you can find some best example code for Java.";

    Matcher matcher = pattern.matcher(candidate);

    while (matcher.find()) {
        String msg = ":" + matcher.group() + ":";
        System.out.println(msg);//from www  .ja v  a  2  s. c  o  m
    }
}

---

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