import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class HelloServlet1 extends HttpServlet {
public void init(ServletConfig config) throws ServletException {
super.init(config);
}
public void service(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException {
String clientIPAddress = req.getRemoteAddr();
res.setContentType("text/html");
ServletOutputStream out = res.getOutputStream();
out.println("<html><body>");
out.println("hello,world");
out.println("</body></html>");
}
}
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