import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
public class MyServlet extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType("text/plain");
PrintWriter out = res.getWriter();
out.println("Request Headers:");
out.println();
Enumeration names = req.getHeaderNames();
while (names.hasMoreElements()) {
String name = (String) names.nextElement();
Enumeration values = req.getHeaders(name); // support multiple values
if (values != null) {
while (values.hasMoreElements()) {
String value = (String) values.nextElement();
out.println(name + ": " + value);
}
}
}
}
}
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