Hamcrest Regular Expression Matcher.Copied from http://piotrga.wordpress.com/2009/03/27/hamcrest-regex-matcher/

RegexMatcher.java

import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;

public class RegexMatcher extends BaseMatcher {
    private final String regex;

    public RegexMatcher(String regex){
        this.regex = regex;
    }

    public boolean matches(Object o){
        return ((String)o).matches(regex);

    }

    public void describeTo(Description description){
        description.appendText("matches regex=");
    }
    
    public static RegexMatcher matches(String regex){
        return new RegexMatcher(regex);
    }
}