I have been working on an Android project in Kotlin and would like to use this UI library. However, it’s written in Java (and so is the documentation), and I’m not sure how to implement the event listener for the buttons. This is how it’s supposed to be done in Java: Does anyone know how I c…
Tag: java
How to use Hibernate Search with a wildcard query and output the result object list
I want to search for a string in XML data in MySQL database using hibernate search and print the result list of data that contains the string. Answer ..it worked
how to programmatically set good scan beep on zebra device(Zebra MC3300) (only beep when specific type of barcode is scanned) using android kotlin app
I want my scanner to beep only when the barcode with “/” is scanned, what I have done is my app check if the barcode scanned have “/” but the beep is produced first then app check if the scanned barcode is right or not Answer You would need to mute the scanner beep and then have your a…
Callable Statement – PostgreSQL – Multiple Out Parameters
We have a stored procedure in a PostgreSQL DB that takes multiple input and multiple out parameters. The procedure call from the PG Admin client works fine when we do the following, call proc1(input1, input2, output1, output2) However, if we try to make this call through a JDBC CallableStatement, we get the b…
ReactiveMongoRepository can’t save to database
I’m newbie with Java. I’m create an API with Webflux and ReactiveMongoRepository. I try to save my data from another API. My repository: My service implements: My services: My model: After function findByIdAccountsApiTrack() run I can’t find any document created in my database. I can see my …
For HashMap, is it more efficient to use compute() or put()
I have tried looking around for a while but I can’t find a concrete answer and still am having some trouble understanding exactly what the compute method for HashMap does. The way I understand it at the moment is that compute will allow you to manipulate the value but not set it to a new value (like whe…
Java – JTextArea refuses to print strings that are just whitespace [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed last year. Improve this question I have …
Android copy text from edittext
I’m having some trouble whilst following a beginner android dev program. I build an Android App and I have created EditText and Button. My idea, users can put PhoneNumber in EditText, and if they click the Copy button, they can copy shortUrl with PhonNumber that inputed! So, I have create a String with …
Spring Boot thymeleaf bad request 400 instead of showing user error
I am trying to submit a form using post request and first validate inputs. However when I make bad inputs (for example all empty) instead of showing error I get bad request (400). For showing error I am using th:if and th:errors tags in HTML. If I submit all valid inputs, there is no problem. Controller class…
Difference between getscaleinstance and scale? (swing java)
I saw a code that used getScaleInstance(x,x) to declare the scale. On the other hand, I also saw that some people used scale to declare the scale. What is the difference? For example: What is the difference between 1 and 2? Answer I have checked the docs for you and have found that: scale() – is a trans…