JAVA - Страница 2473

My program input is time zone name, as 'Asia/Singapore'.

I need to convert it to corresponding zone code, as SGT.

ZoneId class doesn't seem to have any method for it.

What is most convenient way of doing it?

PS: This works
TimeZone timeZone...

I try to make word document using Apache POI 4.0.0, but i get error

Exception in thread AWT-EventQueue-0 java.lang.NoClassDefFoundError: org/apache/commons/compress/archivers/zip/ZipFile at...

I'm working on a large scale project(written with Java 8 and Java 11) where they have used springfox-boot-starter. We are working on migrating the project to Java 17 and Spring Boot 3, but facing the same issue mentioned in here Springfox Type...

I have 4 JavaFx Text objects on UI. These 4 objects are bound to 4 different DoubleBinding

I have a doubleProperty called price.

All the 4 DoubleBindings bind to this price property. In essence when price changes, 4 different calculations are...

I have two JSON strings which are essentially arrays of JSONObject. The two JSON strings have below structure and keys:

JSON-1:

And, JSON-2:

Both these JSONs have a common key title based on which I want to merge these two JSONs, either...

My application is using gRPC in JAVA. The response message size is random. The message size has a range from 1B to 2MB. If I reduce the concurrent request count, the performance is not expected when all the responses are 1B. If I increase the...

How do I obfuscate a WAR using proguard? I have one WAR which contains multiple dependencies as JARs inside and I want to obfuscate only my codebase, by filtering by package name (leaving the rest of dependencies intact).

I'm getting thousands of...

I'm trying to write an implementation of MapPanel by Stepan Rutz in JavaFX.

Stepan's map allows the user to move around the map while the map tiles haven't been loaded and I'm trying to get that same effect.To do it I'm using Task to run the...

I have a JPQL query that is looking for distinct records with pageable. There are situations where the pageable sort will be a property in a nested class.

public class Entity1 { @Id private long id; @ManyToOne private Entity2 entity2; } public...

I need to modify an 8 year old, very bound code. In the old code I didn't have to wait for the async result, so I could work with it easily, but now I have to wait for it because of another async task.

Old version:

public class AsyncGetToken...

Context: This is my first time working with Timefold/Optaplanner, so I might have some incorrect understanding of everything.

I'm working on developing a Quarkus Timefold app using/modifying the food packaging example. The goal is to update the...

Consider the following Java class structure:

public class myClass { class myInnerClass {} } After compiling with the command javac myClass.java, two class files are generated: myClass.class and myClass$myInnerClass.class.

i got 2 files:...

I'm getting the below error while running my springboot application

2024-03-03T22:59:00.898+05:30 INFO 11404 --- o.apache.catalina.core.StandardService : Stopping service 2024-03-03T22:59:00.913+05:30 INFO 11404 ---...

Lets say I have class A and B

class A{ } class B{ A a; B(){ System.out.print( Hello ); a = something; } } Now I have a bean.xml file where I create a bean of A and B and inject A into B. If the default constructor is called while creating the bean...

I have to use recursion to get the nodes from the linked list to a string and use string builder.
public String toString() { StringBuilder sb = new StringBuilder(); Node current = head; if (current.getNext() != null) { sb.append(current.getData() +...

I am running an embedded instance of ActiveMQ Artemis and have been running into some trouble getting the web console to behave correctly.

In order to get the console to run I followed these instructions.

This successfully starts the console and...

I have 4 JavaFx Text objects on UI. These 4 objects are bound to 4 different DoubleBinding

I have a doubleProperty called price.

All the 4 DoubleBindings bind to this price property. In essence when price changes, 4 different calculations are...

I have modified the structure to create a simple example of the problem I am facing, which can be easily reproduced. I am attempting to combine two custom components - one is a custom button and the other is an hbox that contains the custom button....

Java maven war project - when the application starts it should create file and write logs as per log4j2 configuration - here the file is getting created and log4j2 is also taking - but the logs are not getting written to new file. pom, log4j2 and...

I have this simple microservices application with Spring Boot and I try to add the Spring Cloud Gateway service, but it doesn't work. All microservices, including the Eureka server, work well, but when I try to access to some microservice using the...

Whenever I try to run the java I can printout the system Started but not the exporting and binding

import java.rmi.server.UnicastRemoteObject; //!! To use the UnicastRemoteObject import java.rmi.registry.LocateRegistry; //!! To use the...

I use intellij-idea and when I click on the project new -} on this page, I don't see Android. I tried several ways, but it didn't work, like installing a plugin and changing a series of settings, but it didn't work. please help me thanks

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I'm new to Java and Spring Boot. I created a Spring Boot project. and I created an entity class with this code:

package com.example.TEST_WEB; import javax.persistence.*; @Entity @Table(name= users ) public class User { @Id //Strategy =...

Had a pen test recently on a web application i maintain and some of the feedback i received was -

A restrictive setting should be set for Frame-Ancestors headers in the Content-Security-Policy header for all requested resources.

I had a quick...

This is my first time coding for the socket communication so you might see a beginner level's approach. Please bear with it. I am trying to send and receive data from a device (devices in next step) through socket communication. the device receives...