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:MainClass.java

public static void main(String args[]) {
    String candidateString = "My name is Bond. James Bond.";
    String matchHelper[] = { "          ^", "                      ^" };
    Pattern p = Pattern.compile("Bond");
    Matcher matcher = p.matcher(candidateString);

    // Find the starting point of the first 'Bond'
    matcher.find();/*w w w  .  j  a  v  a  2 s . c  o m*/
    int startIndex = matcher.start();
    System.out.println(candidateString);
    System.out.println(matchHelper[0] + startIndex);

}

From source file:Main.java

public static void main(String args[]) {
    // match a single digit
    Pattern p = Pattern.compile("\\d");
    Matcher matcher = p.matcher("5");
    boolean isOk = matcher.matches();
    System.out.println("original pattern matches " + isOk);

    // recycle the pattern
    String tmp = p.pattern();/*from w w w.  j a  v a2  s .co  m*/
    Pattern p2 = Pattern.compile(tmp);
    matcher = p.matcher("5");
    isOk = matcher.matches();
    System.out.println("second pattern matches " + isOk);
}

From source file:MainClass.java

public static void main(String[] args) {
    Pattern patt = Pattern.compile("(\\w+)\\s(\\d+)");
    Matcher matcher = patt.matcher("Bananas 123");
    matcher.lookingAt();/*w ww  . ja  v a 2 s .co m*/
    System.out.println("Name: " + matcher.group(1));
    System.out.println("Number: " + matcher.group(2));
}

From source file:Main.java

public static void main(String[] args) {
    String source = "The quick brown fox jumps over the brown lazy dog.";
    String find = "brown";
    String replace = "red";

    Pattern pattern = Pattern.compile(find);
    Matcher matcher = pattern.matcher(source);
    String output = matcher.replaceAll(replace);

    System.out.println("Source = " + source);
    System.out.println("Output = " + output);
}

From source file:Main.java

public static void main(String[] args) {
    String regex = "\\b(?<areaCode>\\d{3})(?<prefix>\\d{3})(?<postPhoneNumber>\\d{4})\\b";
    String source = "1234567890, 12345, and 9876543210";
    Pattern p = Pattern.compile(regex);

    Matcher m = p.matcher(source);
    while (m.find()) {
        String matchedText = m.group();
        int start1 = m.start("areaCode");
        int start2 = m.start("prefix");
        int start3 = m.start("postPhoneNumber");
        System.out.println("Matched Text:" + matchedText);
        System.out.println("Area code start:" + start1);
        System.out.println("Prefix start:" + start2);
        System.out.println("Line Number start:" + start3);
    }//from   ww  w.  j a  va2 s  . co  m
}

From source file:MainClass.java

public static void main(String[] args) {
    if (args.length < 2) {
        System.out.println("Usage:\n" + "java MainClass " + "characterSequence regularExpression+");
        System.exit(0);/*  w w w.  j av a  2s . co m*/
    }
    System.out.println("Input: \"" + args[0] + "\"");
    for (int i = 1; i < args.length; i++) {
        System.out.println("Regular expression: \"" + args[i] + "\"");
        Pattern p = Pattern.compile(args[i]);
        Matcher m = p.matcher(args[0]);
        while (m.find()) {
            System.out.println("Match \"" + m.group() + "\" at positions " + m.start() + "-" + (m.end() - 1));
        }
    }
}

From source file:MainClass.java

public static void main(String args[]) {
    String joke = "dog day daughter daut did do done date";
    String regEx = "d";

    Pattern doggone = Pattern.compile(regEx);
    Matcher m = doggone.matcher(joke);

    StringBuffer newJoke = new StringBuffer();
    while (m.find())
        m.appendReplacement(newJoke, "g");
    m.appendTail(newJoke);//from   w  ww  .ja  v  a2 s  .c  om
    System.out.println(newJoke.toString());
}

From source file:Main.java

public static void main(String[] args) {
    String s = "bla bla {a.b.c} bla bla bla {0,1,2} bla bla";
    Pattern p = Pattern.compile("\\{([^\\{\\}]*)\\}");

    Matcher m = p.matcher(s);

    while (m.find()) {
        System.out.println(m.group(1));
    }//from  ww  w. j a  v a  2s  .c  o m
}

From source file:Main.java

public static void main(String[] args) {
    CharSequence inputStr = "q w e r t ";
    String patternStr = "q";
    String replacementStr = "s";
    Pattern pattern = Pattern.compile(patternStr);

    Matcher matcher = pattern.matcher(inputStr);
    String output = matcher.replaceAll(replacementStr);
    System.out.println(output);//from   w  w w .  j ava  2s . c  o m
}

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.j  a v a  2s .c  om
}