ExamTray.com offers Java MCQ Questions and Answers and Practice Tests on various topics included below. These are useful for Job Interviews and College Exams.
Topics:
1. Basics History 1
2. Basics History 2
3. Program Structure
4. Data Types
5. Literals 1
6. Literals 2
7. Type Casting
8. Arithmetic Operators
9. Relational Operators
10. Logical Operators 1
11. Logical Operators 2
12. Bitwise Operators 1
13. Bitwise Operators 2
14. Ternary Operators
15. IF ELSE Statements
16. Switch Case
17. Loop Break Continue
18. Multidimensional Arrays
19. Classes and Objects 1
20. Classes and Objects 2
21. Java Methods
22. Constructor Overloading
23. Method Overloading
24. Recursion
25. Command Line Arguments
26. Varargs
27. Inheritance 1
28. Inheritance 2
29. Method Overriding

We shall add new topics every now and then.