I need to exchange data (roughly 100 bytes 10 times a second) between Teensy4.1 and RaspberyPi 4. I decided to do this via serial interface. There is Teensy code: I have hard-coded 191.699997 for test purposes. Please find below RaspberryPi Java part: The output of the above code is the shown bellow: I unders…
Tag: java
Unable to make field final transient java.lang.Class java.util.EnumSet.elementType accessible: module java.base does not “opens java.util” to unnamed
I get this error when I run this test using JDK 17: I tried adding this to my pom.xml based on other answers: But when I build, I now get this error: Answer @Holger is right, you should not hack into JDK internals. He also explained correctly that –add-opens is not a valid Maven Compiler option. Because…
Jolt how to include object outside list and add it to each object of list
I have an array which I have to iterate and append object that is outside the list to each of the object inside list. It is not happening properly. Since offerings is an array if it has multiple objects to each object I need to have typeId of that object. Request: My spec: Response now: Expected: Please help …
How to save data from a “For Loop” into a compressed “.txt” file
I am trying to write a java code to save data from a “For Loop” (2d array named “arr”) into a compressed “.txt” file. What piece of code should be added to convert the result into Bytes and then use “ZipOutputStream” to write data into a compressed “.txt&#…
IBMMQ consumer application unable to consume TextMessage ( JMSCMQ1049: The character set ‘1208(UTF-8) Unmappable Action: REPORT)
I have a consumer application that uses IBMMQ to consume messages from the queue manager. I have no control over the publisher, only the consumer. Here is the part of the code for my consumer: This code works fine and is able to retrieve the message as a TextMessage object for almost all of my queues except f…
i can’t reference a String that exists
Im trying to run this code: but the R.string.default_web_client_id part isnt working (Cannot resolve symbol ‘default_web_client_id’). i know that the ‘default_web_client_id’ string exists, but it isnt at the String XML, its in a generated ‘values.xml’ am i doing something w…
Making a static final Json object in Java
I am currently building a Java Vertx application that executes a task periodically. This application is executes a certain logic and is supposed to return a value in a Json format. The logic seems to work and I don’t have a problem getting the desired value in the log, but I have trouble returning that …
Can’t record with mediarecord when screen is locked. Tried WakeLock but no result
It is a ForegroundService where the OnCreate function is as follows: And the startRecording() method is as follows: The exception is thrown when i turn off the device, the stacktrace i get is: What i want is that the recordingTask keeps running even after the device is locked. I don’t care about battery…
Why do I need to assign -1 to an int for a random number guesser in Java
this is my first question here so I apologize if this has been answered before. I am working through beginner loops in university and am following along my textbook to program a number guesser. The code works, but what I don’t understand is why on line 17 I needed to create an int and give it a value of…
Why can’t I make a group repeat in regex Java?
I have a regex I want to construct for validating the UNC syntax, which is: \serversharedfolderpath I don’t care about the server or folder characters, I exclusively want to validate the thing1thing2maybe3 syntax, the server and folder names will be validated separately. This is what I have so far: Thes…