I am trying to create a starting screen background for my first game in Processing and it keeps erroring with the following message: I’ve tried to solve the problem by following the message and by searching around but I don’t manage to solve it. this is the part for the background: If needed IR…
How to resize image before loading to ImageView to avoid OOM issues
How can i resize image before loading to imageview after selecting from gallery/photos?. Otherwise large images are causing OOM issues. Answer I finally made it to resolve it using glide as follows for those who might need it in future. Selecting Intent Setting Image to Imageview Using Glide
Creating a map from nested lists
Suppose there are 3 classes: Suppose there is a List of Level1 objects called initial state I want to create a map from initialList where: I am able to achieve this using for loops, but I want to achieve this in a more elegant way using Java 8 features (streams and the functions). I tried using Collectors.toM…
Are Java Mockito mocked method invocations thread safe?
I am writing unit tests that test the thread safety of individual Java classes. I use Mocktio to set up the tests and verify the interactions in a multithreaded environment are done as per the expectations, and threads do not interfere with business expectations. Are Mockito mocks thread-safe in that context?…
Java Mail: Exception when sending email
First time working with java mail. I’m following this tutorial but I already fail at sending a basic message and I get a very strange error: Strange because I’m not using IMAP anywhere in my code: The error happens on last line (send). I know the smtp server is correct and working. Any advice why …
REST API for updating informations with empty or null values
I have a general question about how best to build an API that can modify records in a database. Suppose we have a table with 10 columns and we can query these 10 columns using REST (GET). The JSON response will contain all 10 fields. This is easy and works without problems. The next step is that someone wants…
Using Spring Boot without Maven
I am trying to write a simple Java program that displays Hello World as a microservice. I am using Spring Boot, but due to security reasons at my company, I am unable to use Maven. Therefore, I have no option but to download the jar files and add them to my project. I have done so, and made sure I
Can Java enum class set default value
Mycode is which I want can I hava a default value which is not in it， can it be set as a default value？ because I have a type is “%”, but enum is not support %, so I want a default value to solve it Answer The default for one who holds a reference to an enum without setting
How to add querydsl-mongodb to Spring Boot Gradle 5.6.1 project
I am trying to create dynamic query to a mongo database from spring boot gradle project. My gradle version: 5.6.1 Here is my build.gradle file: My application.properties file: Problem is: Q classes are not generating for my Documents. Any suggestion welcome. Thanks. Answer I made it working by adding both @Do…
Sum of intervals in Java
I am stuck on this kata in CodeWars and I have tried for a long time, like for a week or so for one kata. If you want a description of my question, go here. This is my code, if you believe me, there are lots of bugs in it. Can someone please help me out? Answer I think you