正则表达式测试工具。

http://docs.oracle.com/javase/tutorial/essential/regex/test_harness.html

原来是 Console 的，因为公司环境是 1.5，改成 Scanner 的。

package com;

/**
 * http://docs.oracle.com/javase/tutorial/essential/regex/examples/RegexTestHarness.java
 */

/*
 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - 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.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
 */ 

//import java.io.Console;
import java.io.InputStream;
import java.util.Scanner;
import java.util.regex.Pattern;
import java.util.regex.Matcher;

public class RegexTestHarness {

    public static void main(String[] args){
    	//System.ge
    	//java.io.c
    	//java.io.
    	InputStream in = System.in;
    	Scanner scanner = new Scanner(System.in);
        //Console console = System.console();
//        if (console == null) {
//            System.err.println("No console.");
//            System.exit(1);
//        }
        while (true) {
        	System.out.println("Enter your regex: ");
        	String regex = scanner.nextLine();
            Pattern pattern = Pattern.compile(regex);

        	System.out.println("Enter input string to search:");
        	String strSearch = scanner.nextLine();
            
            Matcher matcher = pattern.matcher(strSearch);

            boolean found = false;
            while (matcher.find()) {
//                console.format("I found the text" +
//                    " \"%s\" starting at " +
//                    "index %d and ending at index %d.%n",
//                    matcher.group(),
//                    matcher.start(),
//                    matcher.end());
            	System.out.println("I found the text" +
                        " \"" +matcher.group() +"\" starting at " +
                        "index " +matcher.start() + 
                        " and ending at index " + matcher.end() + ".");
                found = true;
            }
            if(!found){
            	System.out.println("No match found.");
                //console.format("No match found.%n");
            }
        }
    }
}