I have several methods that are basically all the same except for one method that is called in these methods. Example: So the only difference is the method getDB(). Since I don’t want to have this method 10 times, I thought of writing this into a method and then controlling it via the input parameters. My attempt looks like this:
How to increase the size of QR code image – print that is compatible with ESC/POS commands
I have successfully print the QR and Text – Print out image given below Issue – How to Increase the size of QR code image First QR is my Output!! Need to increase like in the Second QR My code: Please let me know how to increase the size of QR. Answer Not able to increase the size more than
VSCode Java Debugger throwing unknown error
I had to re-install VSCode on my machine after an issue I was having, and after having done so, I can no longer run my Spring application. There is no error code, thrown, I can’t find it in the VSCode logs, and the dialog isn’t even copyable. This is the error dialog displayed: The launch.json configuration was auto-generated by Spring
Flink ElasticsearchSinkFunction not serializable in non-static method, but serializable in static method
I have a piece of code that only works inside static methods. If I put the code in a static method, then call it from a non-static method, it works. Never heard of anything like this and couldn’t find information online on it. This works: This doesn’t work: (Full) stack trace: The implementation of the provided ElasticsearchSinkFunction is not serializable.
How I can build a .jar file first and then my andoid app?
In my project: https://github.com/pc-magas/sercommH300sVoipCredentialsRecovery source is seperated into 2 parts: The core library where no android dependencies are placed. The android app iself. Core Logic is in app/src/main/java/pc_magas/vodafone_fu_h300s/logic/ and the tests for the core logic is in: app/src/test/java/pc_magas/vodafone_fu_h300s/logic/ Therefore, I want to split my build process into these phases: Build a .jar out of the app/src/main/java/pc_magas/vodafone_fu_h300s/logic/ place it into ./app/libs
Two sum return statement returns nothing
I’m trying to attempt a problem where I must add two elements in an array to equal a target integer value. I think my code is correct and will return the desired target however the return statement is not returning any value. why is this and how can I fix it? Thanks Answer break is wrongly used. Also, you have
@JsonProperty not working after springboot upgrade
I recently upgraded my application from Spring Boot 1.5.3 to Spring Boot 2.3.5. One of the feature on UI started breaking and I found while debugging that the json response to UI had changed Original response: New response: having underscores (_) in attribute names It seems that the @JsonProperty is not working. My classes are as below: I tried @JsonCreator(mode
creating multiple threads with a unique id (threads do not overlap)
UPDATE I’m solving a producer / consumer problem, and I want to create a few producers and consumers (several threads) and I have a question how can I create several threads correctly so that one task is not performed by two threads (each thread does a different task). code: I tried to do it just in a loop like here:
Accept two integers separated by a delimiter and print their sum
If I’m given an input like 1:2 then the output should be 3. Likewise 54:6 then 60. But I’m getting an error. What should I do to achieve that output? Answer You cannot call split on an integer, it is meant for splitting a String. Try this: Of course some validation would be nice (check if the String contains a
Enable MethodSecurityInterceptor to publish AuthorizedEvent
I want to audit successful authorisations in a spring-boot 2.X application. So I tried to start listening for AuthorizedEvent but that event isn’t published until AbstractSecurityInterceptor….