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import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class MainClass extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
java.io.IOException {
res.setContentType("text/html");
java.io.PrintWriter out = res.getWriter();
out.println("<HTML>");
out.println("<HEAD><TITLE>User Example</TITLE></HEAD>");
out.println("<BODY>");
String username = req.getRemoteUser();
if (username == null) {
out.println("Hello. You are not logged in.");
} else if ("Bob".equals(username)) {
out.println("Hello, Bob. Nice to see you again.");
} else {
out.println("Hello, " + username + ".");
}
out.println("</BODY>");
out.println("</HTML>");
out.close();
}
}
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