I am working on a project and I want to display the contents of a .txt file on the CMD window. I wrote this piece of code to open a demo.txt file on cmd but it does not work. The “path” variable contains the location where the demo.txt file is placed (as you can see obviously). This code produces …
How to identify authentification error type in AWS Amplify using Kotlin?
I want to display different errors to the user when they are logging in through AWS Amplify using Kotlin. This is what I have set up as my last parameter of Amplify.Auth.signIn(): “error” is a “Throwable?” which I wanted to cast to various AWS exceptions and check whether the cast was …
deep copy using reflection java
I can’t get a container from the class field using reflection. I tried the method below, but got an exception: I don’t want to use methods of copying via serialization, I’m interested in reflection. Answer You are doing this for training I hope? If not then use some opensource library, it…
How do you call a method from within a Collector in Java 8 Streaming?
I have a bit of code that is working functionally as I want it to: private Map localMethod(List branchList) { Map
Kafka Stream-GlobalKTable join on a specific field
So I have a KStream that that gets deserialized into a POJO like so And here’s how the Global Ktable record looks like I want to be able to join the KStream’s stock_symbol field with the Ktable’s tckr field. Is this possible? I want to create a new EnrichedMessage object before I stream it i…
Mongo aggregate sum of two Strings
I am trying to sum one field in Mongo. If it is an Integer there is no issue, but the problem is that it is String and I get 0 for totalAmount amountField is a String, how can I sum it in this implementation Answer You are getting String amountField. Simply you can convert this String to Integer by using
Spring SFTP : Unable to rename .writing file
I am using Spring SFTP integration to transfer the file and many time I got this error. It seems two threads are trying to transfer same file and conflict with each other 2020-08-03 08:31:55,766 INF [task-scheduler-8 ] o.s.i.ftp.session.FtpSession – File has been successfully transferred from: ./abc.ext…
SLF4J: Failed to load class at Eclipse
Using win10, Eclipse June 2020 C++ IDE, jdk-13.0.2, IAR plugin. I have a project that contains several sub-projects and it doesn’t compile using the command line (eclipsec.exe). The running command The result is that libDsp is not compiled. The log’s output: Why LibDsp isn’t created? How to …
Unable to set mvn JAVA_HOME setting
I’ve also tried setting JAVA_HOME manually with: export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_261.jdk/Contents/Home for some reason mvn insists on using jdk 11. Do you know where it might be overridden? My pom.xml: Answer Your JAVA_HOME exporting command is incorrect. Your bash message al…
Firebase Authentication: Update Email
I am using firebase to register my users, users can update their data but when updating the email they always send me the task unsuccessful response, and I verified that when updating the email it is well written. This is the code: Already verify that at the time of the mail update it is taken from the edit t…