They say these are the studying materials:
Java SE 7 Fundamentals
Certification Exam Prep Seminar: Java SE 7 Programmer I
Practice Exams: Oracle authorized practice exam from Kaplan SelfTest:1Z0-803: Java SE 7 Programmer I
Practice Exams: Oracle practice exam from Transcender: 1Z0-803 DevCert: Java SE 7 Programmer I
The last 3 ones are just sample questions , the first link does not work , and as for the second link I can't understand if it is a course (with a teacher/video) or a book.