将一个字符串中的数字提取出来

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

public class Test05 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String s = "第12章第3节";
		Pattern p = Pattern.compile("\\d{1,}");
		Matcher m = p.matcher(s);
		while(m.find()) {
			System.out.println(m.group());
		}
	}

}