Changes

Summary

1. Make fields final. Remove redundant modifier on final-class (details)
2. Make fields final. Remove protected-modifier in final class (details)
3. Remove protected-modifier in final class (details)
4. Remove redundant throws clause (details)
5. Type inference. Use autoboxing for int (details)
6. Use factory method for creating FileInputStream (details)
7. Replace string concatenation in loop with StringBuilder (details)
8. Simplify assertions (details)
9. Replace deprecated Mockito-class (details)

Make fields final. Remove redundant modifier on final-class

Make fields final. Remove protected-modifier in final class

Remove protected-modifier in final class

Remove redundant throws clause

Type inference. Use autoboxing for int

Use factory method for creating FileInputStream

Replace string concatenation in loop with StringBuilder

Simplify assertions

Replace deprecated Mockito-class