Hello. During one of the recruitments, I was asked what are the differences between HashMap and HashTable in Java? Which solution is more efficient if we have an application without threads?
Adrian Stolarski is a freelance security tech blogger, specializing in Java, PHP, Security, Typescript and IoT devices. He collaborated with Dolby Laboratories, ING Group and BNP Paribas. A longtime security researcher at InfosecInstitute. He loves Lightbend (formerly TypeSafe) solutions. He does research for Fortune 500 companies and is currently the founder of the SilenceOnTheWire group.
In a given array, find the subset of maximal sum in which the distance between consecutive elements is at most 6.
I am getting the NoClassDefFoundError error when starting a Java application. What is the usual reason for this?
A small frog wants to get to the other side of a river. The frog is initially located on one bank of the river (position 0) and wants to get to the opposite bank (position X+1). Leaves fall from a tree onto the surface of the river.
I got a recruitment request for two tables. Here it is. Assuming I have two arrays in Java.
I have a domain class with unitPrice set as BigDecimal data type. Now I am trying to create a method to compare price but it seems like I can't have comparison operators in BigDecimal data type. Do I have to change data type or is there other way around?
I wrote an application in spring. The application has three profiles to run, so I have three files.
What's the fastest and best way to check if two lists contain the same items? I mean the standard Java library. The order of the elements should not matter, nor their type.
I am writing some code to create a txt file and after completely writing in that txt file, completely close the txt file and then zip that file. But, I don't why, it does not wait until file close before file close it zip it..
Is there any way to download every hour and another period of the day? I mean exactly the result in the form of a list.