java > 正则 / 贪婪匹配 / 替换

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

public class Test {
	public static void main(String[] args) {
		String str = "<biao><>c<b>";
		Pattern pattern;
		Matcher matcher;
		
		// 贪婪: 最长匹配 .* : 输出: <biao><>c<b>
		pattern = Pattern.compile("<.*>");
		matcher = pattern.matcher(str);
		while (matcher.find()) {
			System.out.println(matcher.group());
		}
		
		// 不知是否非贪婪 .*? : 输出: <biao>, <>, <b>
		pattern = Pattern.compile("<.*?>");
		matcher = pattern.matcher(str);
		while (matcher.find()) {
			System.out.println(matcher.group());
		}
		
		// 使用组, 输出<>里的内容, 输出: 'biao', ' ', 'b'
		// 0组代表整个表达式, 子组从1开始
		pattern = Pattern.compile("<(.*?)>");
		matcher = pattern.matcher(str);
		while (matcher.find()) {
			System.out.println(matcher.group(1));
		}		



		///// 然后是  正则匹配替换
		String str = "<mft1><mft2><mft3>";		
		Pattern pattern;
		Matcher matcher;
		pattern = Pattern.compile("<(.*?)>");
		matcher = pattern.matcher(str);
		matcher.find();
		System.out.println(matcher.group(1));
		
		/*
		while (matcher.find()) {
			System.out.println(matcher.group(1));			
		}
		*/
		

		




	}
}