Category "java"

How to convert Mono object without blocking?

Suppose I have this method: public static Mono<String> getData2() { return Mono.just("7"); } I want to call this method, get back the string, convert

How to Pass data from TextView to CardView in Recyclerview which already have data from FireStore

I am new to Android Studio and I am facing a challenge. I have FireStore database and I retrieve the data to Textview inside CardView in the Recyclerview and "

Converting from Swing to JavaFX? (Migration Guide)

When converting a Swing project to a JavaFx project, which classes from JavaFx match up to the Swing classes? A 1-1 matchup is best. I am not looking for inte

read excel by column name java POI

Good afternoon experts have a problem and I need to read the entire excel file by column name instead of its index,example: Column1 | Column2 | Column3 data1

BeanCurrentlyInCreationException when @Autowired and @Bean are present in same class

@Configuration public class Test1 { @Autowired private Test3 test3; } @Configuration public class Test2 { @Autowired private Test3 test3;

Add a max-constraint to a gurobi minimize in Java

i am trying to implement a maximize constraint to a gurobi minimize problem in java. I am having a MIP with nodes an armlenghts of geometrical objects which i a

Can someone give me a really simple example for changing the color of text?

I have searched the Internet for a very simple example, but all of them were too complex and I couldn't understand them. Here is my code, but my linter said th

Can't use onCompletion route scope with transacted routes

I didn't manage to customize transacted route with rollback/commit post-processing. Any help on how to write this kind of transacted route will be really appre

Error :org.apache.thrift.transport.TTransportException java.net.SocketException: Broken pipe (Write failed) (State=08S01,code=0)

Our one of the Gateway machines getting a continuous error on Hive. While we are trying to execute any(select, Insert and drop) command in a beeline, frequent

Does pattern matched switch need to be always exhaustive in Java?

JEP 406 states: A pattern variable introduced by a switch label is definitely matched in the associated switch rule expression, switch rule block or switch rul

Good practice / design pattern to resolve the nested if else?

Currently I have code like this: for (each item) { if (item == 'x') { print } if (item == 'y') { print } } Now, there is an additiona

java Field change listener

So I would really want some way of detecting Field changes of a certain object. I have googled for quite a while but haven't found anything. So basically all I

Round Double to 1 decimal place kotlin: from 0.044999 to 0.1

I have a Double variable that is 0.0449999 and I would like to round it to 1 decimal place 0.1 . I am using Kotlin but the Java solution is also helpful. val

Junit Parameterized Constructor - Wrong Number of Arguments

I am trying to build a parameterized Junit Test in order to test each occurrence of a LinkedHashMap within an ArrayList of LinkedHashMaps. This is because each

show pdf file inside android app from server url without give the permission download that file

show PDF file inside the android app from the server URL without give permission to download that file. how it can do in the android app. I have tried using web

Java PriorityQueue no way to initialize with a Collection and custom comparator?

I read through the implementation of Java PriorityQueue, the constructors it has are: PriorityQueue() PriorityQueue(Collection<? extends E> c) Priority

pitest report can't mix JUnit 4 and JUnit 5 tests

Recently, I introduced Pitest as the mutation testing tool to our team to diagnose test quality, and we loved it. In our codebase, we have lots of preexisting J

java.lang.ClassNotFoundException: com.fasterxml.jackson.annotation.JsonInclude$Value

I am trying to convert my json string to java object and I am getting error Exception in thread "main" java.lang.NoClassDefFoundError: com/fasterxml/jackson/ann

Allowed packages in custom header of Kafka-Message

In spring-kafka, how do I add classes from a package to be trusted as a custom header field? The message is being sent like this: @Autowired private KafkaTemp

Styling and organizing nodes inside a scene

I want to do the following things: Organize my JavaFX code's nodes Increase the size of my combo boxes a little bit Change the scene background's color. My c