Valorem Android Developer Interview Questions and Answers

Designing Facebook is a complex task involving various components and technologies.

• Identify the core features of Facebook such as user profiles, news feed, messaging, and groups.

• Choose appropriate technologies for each component such as PHP for backend, React for frontend, and MySQL for database.

• Ensure scalability and performance by implementing caching, load balancing, and database sharding.

• Implement security measures...read more

To check Java version, use command prompt/terminal and type 'java -version'.

• Open command prompt/terminal

• Type 'java -version'

• Press enter

• The installed Java version will be displayed

The main method syntax is a standard entry point for Java programs.

• The main method must be declared as public, static, and void.

• The method name must be 'main'.

• The method must accept an array of strings as an argument.

• The method must be defined within a class.

• Example: public static void main(String[] args) { }