19 HTTP Response Header | HTTP Status Codes | Adv Java Servlet programming Tutorial | advance java
#HTTP #Response #Header: When servlet program sends output/response to browser window through server that response contains multiple details as #SCH details: #Adv #Java #Servlet #programming #Tutorial #advance #java #tutorial
S - Http response status code: (100 to 599)
100-199 Information (Guidance)
200-299 Success (Output)
300-399 Redirection(Request given one server but it goes to another server)
400-499 Incomplete (Servlet/webapplication web resource is incomplete)
500-599 Server Error's
C - response content.
(The output generated by servlet program)
H - response headers.
(Gives instructions to browser window)
Eg: refresh, contentType, contentLength & etc...
The default response status code for servlet prgram is 200.
response status code indicates the status of response given by web resource program(Servlet program) to browser window.
response headers gives instructions to browser window through web-server towards displaying the web page having response.
request headers are no where related to response headers.
Diag:
When Servlet Container creates resonse object it will set some default values to the common response headers automatically to override these values & to set values to special response headers res.setHeader("headerName", "headerValue");
Note: If header value is numeric value then we can use res.setIntHeader("headerName", headerValue);