posted 13 years ago
for OCJP , best book will be
SCJP Study Guide by Kathy Sierra.
you may gain java basic concept from java complete reference.
~ abhay
Oracle certified JPA Developer (1Z0-898),Oracle certified Java 8 Programmer I (1Z0-808), Oracle Java Web Service Developer (1z0-897), Oracle certified Java 7 Programmer, SCJA 1.0, SCJP 5.0, SCWCD 5.0, Oracle SQL Fundamentals I, CIW Certified Ecommerce specialist