HCLTech Software Engineer - Java Developer interview questions

The first round was a written test 1. Write a program to multiply the digits of number If number is 12345 Than output should be multiplication of 1*2*3*4*5 If number is 120 Than output should be multiplication of 1*20 If number is 1006 Than output should be 100*6 Second round was a technical round Here, interviewer was only interested in spring and hibernate, he asked the project experience and difficulties faced during project phase... What is jpa?what does jpa do? What is rest?what is resource in restful API? What is j2ee? which technologies come under j2ee He was mostly asking these type of questions...