java邮箱正则验证

import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class test{
    public static void main(String args[]){
        System.out.println(test.isEmail("[email protected]"));
    }
    public static boolean isEmail(String email){
        String str="^" +
                "([a-zA-Z0-9]*[-_]?[a-zA-Z0-9]+)*@" +
                "([a-zA-Z0-9]*[-_]?[a-zA-Z0-9]+)+" +
                "[\\.][A-Za-z]{2,3}" +
                "([\\.][A-Za-z]{2})?" +
                "$";
        Pattern p = Pattern.compile(str);
        Matcher m = p.matcher(email);
        return m.matches();
     }
}

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