I am trying to return empName if its present Or else Empty String But i am unable to return . After ifPresent its not allowing me to return value , please help need with the syntax . This is my Structure This is my Employee class My Test Program Answer If you want any name of one of the employees
Gradle Kotlin DSL – Build script fails when java.sourceCompatibility defined in Parent but build is successful when added to child module
Am trying to setup a new repository for a multi module springBoot application using gradle (Kotlin DSL for build scripts) As part of the same I am trying to declare generic configuration and dependencies needed for all subProjects. In doing so, I am trying to define sourceCompatility for all child projects in…
Use HashSet to weed out duplicate values. List returns either empty or returns duplicate values
I am trying to remove duplicate values from an ArrayList using HashSet, so that city names aren’t returned more than once if they are the same… The List comes back either empty or still shows duplicate values. Was hoping someone could tell me where the error is in my code, so that no duplicate values ar…
XML to java object using jaxb Unmarshalling namespace
I have below employee.xml which I am trying to convert to Java Object using JAXB. I am getting null value here, please guide me what I am missing here or doing wrong. I am not familiar with JAXB and namespace <employee xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xmlns:xsd=”http:…
Rebuild of a RSA Private Key from modulus & exponent fails
I’m trying to rebuild a RSA keypair from modulus & private/public exponents. The conversion works correct for the public key but fails to private key when comparing the encoded private keys. When using this rebuild private/public keypair for encryption it works (!) in Java, but when using the rebuil…
Is it necessary to make `AtomicBoolean` also `volatile`?
My understanding: Declaring a variable volatile guarantees the visibility for other threads about writes to that variable. Essentially, every write to volatile variable happens-before subsequent reads. I understand the atomicity of AtomicBoolean.compareAndSet() and how it provides the atomicity of read+write …
is scala OpenHashMap remove operator threadsafe
Sorry but I cannot find in the network a direct answer to a very simple questions. is scala OpenHashMap remove operator threadsafe? Regrds. Answer Seems it is not thread safe: Scala OpenHashMap def: Ref link: https://alvinalexander.com/java/jwarehouse/scala-2.11/library/scala/collection/mutable/OpenHashMap.sc…
Regular expression to mask email except the three characters before the domain
I am trying to mask email address in the following different ways. Mask all characters except first three and the ones follows the @ symbol. This expression works fine. (?<=.{3}).(?=[^@]*?@) abcdefgh@gmail.com -> abc*****@gmail.com Mask all characters except last three before @ symbol. Example : abcdefg…
Getting image in POST request using Java and vert.x
I got the following question, I can’t get image which I’m sending from android app to server, I’m sending image from app using kotlin, and receiving it on server written with Java using vert.x. I send it with following code: on server side I’m handling it like But I can’t get any…
Dialog Activity has a layout on the background
I am trying to make a dialog activity when the notification is clicked but I encountered some trouble. as you can see, the dialog is opened after clicking the notification but the black background is not necessary, how could I remove this ? I wanted to do is just pop.out the dialog box on the application befo…