i think nobody here took this exam. coz its too basic. im just taking this coz it only 'requires somehow', knowledge on jsp and servlets, and not ejb nor web services(which i havent done yet).
Why dont you spend some time to search in this forum using the search functions? I saw around 40 posts related to this exam.
One of the posts stated the study strategy:
https://coderanch.com/t/144266/po/certification/Passed-Exam
and to make it worst, it looks like my local bookstore here in Singapore doesnt have the ibm 285 cert book.
In such sense, you might use IBM Redbook instead.
Nick
SCJP 1.2, OCP 9i DBA, SCWCD 1.3, SCJP 1.4 (SAI), SCJD 1.4, SCWCD 1.4 (Beta), ICED (IBM 287, IBM 484, IBM 486), SCMAD 1.0 (Beta), SCBCD 1.3, ICSD (IBM 288), ICDBA (IBM 700, IBM 701), SCDJWS, ICSD (IBM 348), OCP 10g DBA (Beta), SCJP 5.0 (Beta), SCJA 1.0 (Beta), MCP(70-270), SCBCD 5.0 (Beta), SCJP 6.0, SCEA for JEE5 (in progress)