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57 Questions

Synchronous / asynchronous REST client

Do not share same socket between two threads at the same time

Having sync and async methods by implementing future interface

Finding an element in multiple sorted lists efficiently

Checking whether a timestamp is 10 minutes old

Segregate even and odd numbers in a given array

Extracting elements from multiple sorted lists efficiently

Synchronous and asynchronous behavior for client

Rearranging numbers to get the largest number

Sending data to a database in size-limited chunks

Simplifying asynchronous “executeAsync” method along with “onFailure” callback

Calculating running average in Java

Measuring performance of code using StopWatch

Send records to messaging queue using either of one policy

Single class which holds response and error message

Calling other machines from the LinkedList if one is blocked or down

Repeatedly fetching a URL until the response contains “state: INIT”

Send records and retry them if acknowledgement is not received

Parsing data coming from a URL

Efficiently detect datacenter based on server hostname and return the full path

Receiving a JSON string response from a URL

Send data synchronously or asynchronously

Validate the inputs and perform actions accordingly

Using two maps and making a new map by applying all the transformations

Extracting various URL parameters in Rest Service and then passing it to Builder class

Calling a method in parallel which returns the future

Parsing huge data coming from a URL

Find all descendants deeply of tree structure from flat data

Largest palindrome in a string

Validating an input string against some enum fields