How to detect Browser using JSP ?

Question

Hi friends,
I wanna to put some code to detect browser and
Other than IE6+ i have to block other browser to display login.
How do i check that ? Using JSP.
e.g.
If i open IE6+ login page should be displayed. Else on other browsers
it will check brower and deny to display login page.
How Do i check it ? please Help me.

Answer 1

this code works for me in IE,Safari and firefox but i could not check in netscape as i dont have.
String userAgent = request.getHeader("User-Agent");
      System.out.println("UserAgent:"+userAgent);
      userAgent=userAgent.toLowerCase(); //convert to lowercase and then check
      if(userAgent.indexOf("netscape6") != -1)
     System.out.println("Netscape");
      else if(userAgent.indexOf("msie") != -1)
          System.out.println("IE");
     else if(userAgent.indexOf("firefox") != -1)
     System.out.println("Firefox");
     else if(userAgent.indexOf("safari") != -1)
     System.out.println("Safari");
     else
          System.out.println("Else");