java - Why Servlet program outputting HTML text as it is?

Question

I created one program that prints 'Welcome to our site' text on browser using servlet. It works fine inside the eclipse default browser but when I use that URL to other browser it displays text as below:

And below is the image of the code that is working well inside eclipse browser

And my code is as follows:

public class WelcomePage extends HttpServlet {
@Override
public void init() throws ServletException {

}
@Override
protected void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
    PrintWriter out = res.getWriter();
    out.println("<h3>Welcome to our site<h3>");
    out.println("<form>");
    out.println("</form>");
}
@Override
public void destroy() {

}

}

Answer 1

After adding res.setContentType(text/html); problem resolved :)

Before sending data to client (displayed by Browser on client machine), the Servlet container informs the client browser of what type of data is being sent now. The data that can be sent may be simple plain text, html form, xml form, image form of type gif or jpg, excel sheet etc. To send this information, the Servlet container uses response object with the method setContentType().

Some examples :

response.setContentType("text/html");           
response.setContentType("text/plain");  
response.setContentType("text/css");            
response.setContentType("application/html");
response.setContentType("image/gif");
response.setContentType("application/zip");
response.setContentType("application/pdf");