Answers for SCWCD / OCWCD Online Test | Mock Test

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Ques. Which of the following statements is true regarding MyServlet?

import javax.servlet.*;
import javax.servlet.http.*:
import java.io.*;

public class MyServlet extends HttpServlet implements SingleThreadModel
{
String myName;

public void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
response.setContentType("text/plain");
PrintWriter out = res.getWriter();
myName = req.getParameter("name");
sayHello(out);
out.close();
}

public void sayHello(PrintWriter out) {
out.println("Hello " + myName);
}
}

Option 1. MyServlet is thread safe

Option 2. MyServlet is not thread safe because myName is an instance variable

Option 3. MyServlet is not thread safe because MyServlet implements SingleThreadModel.

Option 4. None of the above

Ans. Option 1

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