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.
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?
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.
