TestRegularExpression.java Source code

Introduction

Here is the source code for TestRegularExpression.java

Source

// : c12:TestRegularExpression.java
// Allows you to easly try out regular expressions.
// {Args: abcabcabcdefabc "abc+" "(abc)+" "(abc){2,}" }
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class TestRegularExpression {
    public static void main(String[] args) {
        if (args.length < 2) {
            System.out.println("Usage:\n" + "java TestRegularExpression " + "characterSequence regularExpression+");
            System.exit(0);
        }
        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));
            }
        }
    }
} ///:~