import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class TestRegExp {

    public static void main(String[] args) {

        String str = "insert into @@table(@@dataAsIn1sertKeys:aaa.aa) values( @@dataAsInsertValues )";

        System.out.println(replaceString(str));

    }

    public static String replaceString(String str) {

        Pattern pattern = Pattern.compile("@@[0-9a-zA-Z:.]+");

        Matcher m = pattern.matcher(str);

        if (!m.find()) {

            return str;

        }

        StringBuffer sb = new StringBuffer();

        int index = 0;

        do {

            index++;

            String group0 = m.group(0);

            System.out.println(group0);

            m.appendReplacement(sb, "aaaa_" + index + "_" + m.group(0));

        } while (m.find());

        m.appendTail(sb);

        return sb.toString();

    }

}