Altimetrik Java Developer Interview Questions and Answers

Find the length of the longest subsequence of contiguous integers in an array.

• Sort the array

• Iterate through the array and check for consecutive integers

• Keep track of the longest subsequence found

Use flatMap and map to extract list of pincodes from Employee objects

• Use flatMap to flatten the list of Addresses in each Employee object

• Use map to iterate over the flattened list and extract the pincodes

• Example: employeeList.stream().flatMap(emp -> emp.getAddresses().stream()).map(address -> address.getPincode()).collect(Collectors.toList())

Database pooling is a technique used to manage a pool of database connections for efficient resource utilization. HikariCP is a popular database connection pooling library in Java.

• HikariCP is a high-performance database connection pooling library for Java applications.

• It is known for its low latency and high throughput.

• Configurations for HikariCP include settings such as maximum pool size, connection timeout, and idle ...read more