2016-03-25-Expedia phone interview questions

1. what’s the difference between abstract class and interface?
2. why we use abstract class in java?
3. explain three OOD concepts with examples
4. what’s the difference between unit test and integrated test?
5. regular express
6. Give a html file, change the format of all phone numbers, such as replace 408-909-2786 by 4089092786. how to implement it by your method?
7. tell me about REST api
8. What is caching?
9. What is statelessness in RESTful Webservices?
10. When test you APIs, if the behavior was impact by the data changes in the database. How to handle this case?
11. how to do automated test?
12. how to do continuous integration with jenkins?