一个正则表达式的例子

import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Test {
	public static void main(String args[]) {
		String str = "我有50元30元 1000元";
		String regxChinese = "[/u4e00-/u9fa5]+";
		String regxDigit = "//d+";
		StringBuffer sb1 = new StringBuffer();
		StringBuffer sb2 = new StringBuffer();
		Pattern p1 = Pattern.compile(regxChinese);
		Pattern p2 = Pattern.compile(regxDigit);
		Matcher m1 = p1.matcher(str);
		Matcher m2 = p2.matcher(str);
		while (m1.find()) {
			sb1.append(m1.group() + " ");//输出所有汉字
		}
		System.out.println(sb1);
		while (m2.find()) {
			sb2.append(m2.group() + " ");//输出所有数字
		}
		System.out.println(sb2);
	}
}