Question

I’ve done the import

import static java.lang.System.out;

then I tried

out.println( "test");

but all what it does is the same to

System.out.println("test");

Both shows in log but not browser

Answer 1

While you are in the servlet you must write:

response.getWriter().println("test");

Where response is of ServletResponse type (or HttpServletResponse inheriting from it). If you are trying to call this from a different class, you must either pass the whole ServletResponse or PrinterWriter returned from getWriter() and use it as you out variable.

Note that:

import static java.lang.System.out;
out.println( "test");

is equivalent to:

System.out.println("test");