Category "java"

(Solved)Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException javax.swing.ImageIcon.<init> Resource file does exists

According to this video https://www.youtube.com/watch?v=n_Y7r-7GxDo I need to place the icons in the main package. Even after this, I get the same error packa

RAII design pattern in Java

Coming from a C++ background, I am a huge fan of the RAII pattern. I have used it extensively to handle memory management and lock management along with other u

React Native Error: 'Permission Denial: starting Intent"

I managed to add facebook login and google login to my application but I think I might have done something wrong. Before I started adding the logins I previousl

Get Human readable time from nanoseconds

I am trying to implement an ETA feature Using System.nanoTime() startTime = System.nanoTime() Long elapsedTime = System.nanoTime() - startTime; Long allTimeFor

Error: 'else' without 'if'

Getting an else without if statement: import java.util.Scanner; public class LazyDaysCamp { public static void main (String[] args) { int temp

Automation Test executed by Runner works fine, but when execute this by command mvn, it gets error in test that already works fine

I am a QA and created a framework(JAVA) to execute my tests. Everything is going fine running the tests by Runners. All those tests works fine and got the PASSE

JPA Multiple Embedded fields with prefix?

With JPA annoations, I want to reuse same embedded object like this : @Entity public class User { @Embedded public Address homeAddress; @Embedded

Interview: Find the whole cubes between range of two Integers

I just gave a coding interview on codility I was asked the to implement the following, but i was not able to finish it in 20 minutes, now I am here to get idea

Is there any difference, if I init AES cipher, with and without IvParameterSpec

I was wondering, is there any difference, if I init AES cipher, with and without IvParameterSpec? With IvParameterSpec SecretKeySpec skeySpec = new SecretKeyS

Type Mismatch cannot convert from type Optional<User> to User

I am trying to create a website that allows the user to update, edit, delete, etc., and I have got to the part of Updating or Editing user’s information.

Java NullPointer Custom Validator javax.validation.ConstraintValidator

I have the following Validator that I use to validate an Update Request. @Component public class UpdateDateValidator implements ConstraintValidator<ValidateD

How can I pass and access C data from Java?

I've been doing some programming in Java and some in C but now I need to sort of use both together. Here's the situation, I'm using Hadoop/Hbase to process and

InvalidDefinitionException while using JsonCreator with JsonProperty.Access.READ_ONLY

I'm getting InvalidDefinitionException when trying to use @JsonCreator along with @JsonProperty(value = "version", access = JsonProperty.Access.READ_ONLY) This

The bean 'exampleService.FeignClientSpecification' could not be registered. Bean already defined and overriding is disabled

My feign client class is as below along with the Application class. @FeignClient(name = "ExampleService", configuration = FeignClientConfig.class, url = "http:

How to reduce CPU usage for Java 11 with G1GC on GCP

I have: the application multi thread, low latency OpenJDK 64-Bit Server VM version 11.0.7+10 configuration is Xms=6g Xmx=12g machine is 12CPU started in GCP (Go

Parameter conditions "dietaryrestrictionssearches" not met for actual request parameters: active={304, 305}

my controller and model. I check two checkboxes and it should put those values 30 and 305 into table but I get this message. Any help would be appreciated @Req

How to parse invalid (bad / not well-formed) XML?

Currently, I'm working on a feature that involves parsing XML that we receive from another product. I decided to run some tests against some actual customer dat

Android method performance suddnely slow after upgrade from Marshmallow to Nougat

I have been developing a game, using a Samsung Galaxy S6 running Marshmallow as one of my development devices. After the phone upgraded itself to Nougat, a met

Convert indefinitely running Runnable from java to kotlin

I have some code like this in java that monitors a certain file: private Handler mHandler = new Handler(); private final Runnable monitor = new Runnable() {

In OSGi, how do you gracefully handle initialisation exceptions?

I am using Maven-SCR. By using the @Component and @Service tags, I can have my class instance register the interfaces it provides automatically. On occasion, h