trystring.java

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

import java.util.*;

class TryString{
	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);
		int start = -1, end = 0;
		while((start = str.indexOf(regEx, end)) != -1){
			end = start + regEx.length();
			System.out.println("Pattern found at Strart: " + start
				+ " End: " + end);
			Arrays.fill(marker, start, end, '^');
		}
		
		System.out.println(str);
		System.out.println(new String(marker));
	}
}