package regex;

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

public class tiquChinese {
	public static void main(String[] args) {
		String regEx="[\\u4E00-\\u9FFF]+";
		String str="welcome to china , 洛丁山, yes, 谢谢！ ";
		Pattern p=Pattern.compile(regEx);
		Matcher m=p.matcher(str);
		StringBuffer sb=new StringBuffer();
		
		while(m.find()){
			sb.append(m.group());
			System.out.println(m.group());
		}
		System.out.println(sb);
	}

}

执行后的结果为：

洛丁山
谢谢
洛丁山谢谢