毕业，电脑，手机，网络和我

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

public class AtTest {
public static void main(String[] args) {
Pattern pattern = Pattern.compile("@\\w+\\s");//编译正则
String s = "@tom @lilei @daniu 我@你了看看吧";
Matcher matcher = pattern.matcher(s); //进行匹配

//找出和正则匹配，返回一个bollean
while (matcher.find()){
System.out.println(matcher.group());//返回匹配正确的字符串序列
}
}
}