I wrote a code of java which adds the data present in array to an existing json file. This is my code List<List> list = [[“FileName1″,”Value1″,”Id1”],[],[],[]…] It is writing the code at required path, but not appending it. Previous data gets deleted. Expected R…
Tag: java
Odd Rounding Logic
— Short Solution — Thank you for all the informative replies… @PetrJaneček @Matt pointed me in the right direction. I agree I had to brush up on my understanding of floating point arithmetic; but the difference in calling the constructor vs double’s canonical string representation by u…
ContainerRequestFilter being ignored in my Quarkus extension
I want to implement a custom extension to be used in my services. One of the key features is to filter all the incoming requests: And it’s being declared in that way: I also tried adding the Jandex plugin in the runtime pom But it’s not being called. I saw a similar scenario here but the solution …
Track outgoing REST call in Java Function App inside Application Insights
From what I understand Azure Application Insights is able to automatically track and log incoming HTTP requests to an application. However, my usecase is I need to track an outgoing HTTP request (that I make programmatically). I have a Java Function App (with an HTTP trigger) running in Azure with App Insight…
Why can’t I use reverse DNS to create a java / gradle module on IntelliJ IDE?
How exactly do I name an IntelliJ project, module, packages etc? I tried to name a module in reverse dns, but IntelliJ would not allow it, so I am obviously doing something wrong. Also, I’m confused between the difference between a Java Module and an IntelliJ Module. Update: There was a bug with Intelli…
Spring JPA/Hibernate – OneToMany bi-directional problem
I’ve encountered this problem that won’t let me sleep I have 2 entities Property and Tenant each property can have 0..1 tenant, each tenant can have 1..N properties what am I trying to accomplish is when I create a new tenant, using cascading I want to attach it to an existing property saving is d…
Difference between a DynamicMessage and a typed Message
I’m trying to understand more about protobuf DynamicMessage. If I have a message Animal that is coming from an input stream, code that has the Animal protoc java type (say AnimalProto) will use that type directly to deserialize. Whereas a code without the compile time dependency on AnimalProto but has a…
Which filesystems provide native support for Java’s WatchService?
I want to use the Java WatchService in an IDE-like tool. It seems like a good match for the behaviors I need from it. The trick is that my customers use the tool in all sorts of interesting environments. Most of the time, the files are on the local disk, but often the files will be on some mounted network
Interactions between code in two unnamed modules
Premise: I have had 2 classes loaded by different class loaders – one from the app classloader and the other, a custom class loader. The class loaded by the custom class loader is trying to reflectively access a private field in the class loaded via the appclass loader. In this case, I get a runtime err…
Check if any value in list satisfies a condition
Suppose I have the following table called Seasons: … start_month end_month … 2 6 … 3 4 … … … I need to write a query which, for a given list of months, returns all the Seasons that satisfy the condition where at least 1 month in the list is: start_month <= month <= en…