Simple example of using Regular Expressions functionality in String class

 

/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 * 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */
/**
 * Simple example of using RE functionality in String class.
 * @author Ian F. Darwin, http://www.darwinsys.com/
 * @version $Id: REString.java,v 1.4 2004/02/23 02:37:34 ian Exp $
 */
public class REString {
  public static void main(String[] argv) {
    String pattern = "^Q[^u]\\d+\\..*";
    String input = "QA777. is the next flight. It is on time.";

    boolean found = input.matches(pattern);

    System.out.println("'" + pattern + "'" +
      (found ? " matches " : " doesn't match '") + input + "'");
  }
}

Related examples in the same category

1.	Simple Pattern
2.	Pattern Match
3.	Pattern Split
4.	Another pattern split
5.	Reg Exp Example
6.	PatternConvenience -- demonstrate java.util.regex.Pattern convenience routine
7.	Show use of Pattern.CANON_EQ
8.	A block of text to use as input to the regular expression matcher
9.	Allows you to easily try out regular expressions
10.	Regular expressions: start End
11.	Pattern: Resetting
12.	Pattern: flags
13.	Setting Case Sensitivity in a Regular Expression
14.	Use enclosing form
15.	Use a character set
16.	Adding Comments to a Regular Expression
17.	The inline modifier can also contain pattern characters using the form (?x:abc)
18.	Use an inline modifier: (?x)a [\\ ] b
19.	Use an inline modifier: x)a \\s b
20.	Use an inline modifier: a (?x: b)
21.	Tabs and newlines in the pattern are ignored as well
22.	Compiling a Pattern with Multiple Flags
23.	Matching Across Line Boundaries in a Regular Expression
24.	Match Duplicate Words
25.	Validation Test With Pattern And Matcher
26.	Match one or more
27.	Matcher.reset: restart
28.	Matcher.reset(CharSequence)
29.	Matcher.start(): Find the starting point
30.	Matcher.start(int) Example
31.	Matcher.end(): find the end point
32.	Find the end point of the second 'test'
33.	Using the find() Method from Matcher
34.	Using the find(int) Method
35.	Using the lookingAt Method
36.	Possessive Qualifier Example
37.	Simple Positive Lookahead
38.	Finding Every Occurrence of the Letter A
39.	Simple Negative Lookahead
40.	Simple Positive Lookbehind
41.	Regular expression search program
42.	Find all matches
43.	Implement a pattern matcher for regular expressions
44.	Regular expression and CharSequence
45.	Regular Expression search and replace program
46.	Pattern helper

Simple example of using Regular Expressions functionality in String class : Pattern « Regular Expressions « Java

Related examples in the same category