Java 正则表达式 - 命名捕获组

JDK1.7支持正则表达式的命名捕获组JDK1.6不支持

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

public class Test {
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String pStr = "0x(?<bytes>\p{XDigit}{1,4})\s++u\+(?<char>\p{XDigit}{4})(?:\s++)?";
		String INPUTTEXT = "0x12A4 u+56C8";
		Matcher m = Pattern.compile(pStr).matcher(INPUTTEXT);
		if (m.matches()) {
			int bs = Integer.valueOf(m.group("bytes"), 16);
			int c = Integer.valueOf(m.group("char"), 16);
			System.out.printf("[%x] -> [%04x]%n", bs, c);
		}		
	}
}