tryregex.java

nanjing university cs 的java课件。 对新手很有用。付课件中源码。

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

class TryRegex{
	public static void main(String[] args){
		String regEx = "had";
		String str = "Smith , where Jones had had 'had', had had 'had had'.";
		char[] marker = new char[str.length()];
		Arrays.fill(marker, ' ');
		
		Pattern pattern = Pattern.compile(regEx);
		Matcher m = pattern.matcher(str);
		
		while(m.find()){
			System.out.println("Pattern found at Strart: " + m.start()
				+ " End: " + m.end());
			Arrays.fill(marker, m.start(), m.end(), '^');
		}
		
		System.out.println(str);
		System.out.println(new String(marker));
	}
}