Setting Arbitrary Response 

Headers

public void 

setHeader

(String headerName, 

String headerValue) 

Sets an arbitrary header

public void setDateHeader(String name,      

long millisecs) 

Converts millis since 1970 to date in GMT format

public void setIntHeader(String name, 

int headerValue) 

Prevents need to convert int to String

addHeader, addDateHeader, addIntHeader 

Adds header instead of replacing 

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Servlets

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Setting Common Response 

Headers

setContentType 

Sets the Content Type header. 

Servlets almost always use this header. 

See Table 19.1 (Common MIME Types).

setContentLength 

Sets the Content Length header.

Used for persistent HTTP connections.

See Connection request header. 

addCookie

Adds a value to the Set Cookie header. 

See separate section on cookies.

sendRedirect 

Sets Location header (plus changes status code) 

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