Some of the free java tutorials resources are given below:
1. Introduction to Java (http://www.tutorialsweb.com/java/index.htm)
2. Java Practice Questions (http://www.simulationexams.com/SampleQuestions/java-certification/scjp/java-certification-questions.htm)
3. Tutorial from SCJP OCPJP Exam Guides Tech Tuturial (http://www.examguides.com/scjp/index.htm)