Barclays Global Service Centre Java J2ee Developer Interview Questions and Answers

One of the best projects I worked on was developing a mobile app for a non-profit organization.

• The app was designed to help the organization's volunteers easily track their hours and tasks.

• I worked closely with the non-profit to understand their needs and create a user-friendly interface.

• The app was well-received by the volunteers and helped the organization better manage their resources.

• I also implemented a feature th...read more

Yes, I am flexible with night shifts.

• I have worked night shifts before and am comfortable with them.

• I understand the importance of being available for work at all times.

• I am willing to adjust my schedule to meet the needs of the company.

• I am aware that night shifts may require a different sleep schedule and am prepared to make necessary adjustments.

I have the skills, experience, and passion to contribute to the growth and success of your company.

• My extensive experience in the industry will allow me to bring new ideas and perspectives to the table.

• I have a proven track record of achieving targets and exceeding expectations.

• My strong communication and interpersonal skills will enable me to work effectively with colleagues and clients alike.

• I am a quick learner and ...read more

I believe gaining practical experience is more valuable than pursuing further education at this point.

• I want to focus on gaining practical experience in my field

• I feel that further education may not necessarily enhance my skills or job prospects

• I am satisfied with my current level of education and feel it is sufficient for my career goals

I wanted to explore new opportunities and gain exposure to different cultures.

• I wanted to broaden my horizons and experience new things.

• I believed that studying in a different city would provide me with more opportunities for personal and professional growth.

• I wanted to meet new people and learn about different cultures.

• I was excited to explore a new city and all that it had to offer.

• I felt that studying in a different...read more

Oops concepts in Java

• Encapsulation - hiding implementation details

• Inheritance - reusing code and creating parent-child relationships

• Polymorphism - multiple forms of a method or object

• Abstraction - creating abstract classes and interfaces

• Example: Encapsulation - using private variables and public methods

• Example: Inheritance - creating a subclass that inherits from a superclass

• Example: Polymorphism - using method overloa...read more

Altering columns in databases involves modifying the structure of a table by adding, deleting or modifying columns.

• Use ALTER TABLE statement to modify columns

• Add new columns using ADD COLUMN

• Delete columns using DROP COLUMN

• Modify columns using MODIFY COLUMN

• Changing column data type may result in data loss

Reversing a number in Java

• Convert the number to a string

• Use StringBuilder to reverse the string

• Convert the reversed string back to a number

To extract words from a line in Java, split the line using whitespace as delimiter.

• Use the split() method of String class

• Pass the whitespace regex as argument to split() method

• Iterate over the resulting array to get individual words