I’m using Spring Boot 2.0.x with Logback. On startup of my application (using an embedded tomcat), I see several INFORMATION log messages (written to standard error) which apparently originate directly from the embedded tomcat. In contrast to the rest of all my logging, these messages seem to not be wri…
Java to Kotlin conversion
Here is a Piece of code in java. How can i convert this in kotlin. I Tried, But this does not give me the size. Answer You can initialize list like this: dots is a Mutable, No Fixed Size list of elements. You can change elements at specific indexes and add new elements, e.g.: Also there are other ways to
Head First Java-Page 192 (Mixed Messages)
I am attemping an example question from Head First Java: I typed it as it is on netbeans. Creating 3 classes as classA, classB, classC and Main method as mixed class. In class mixed to I get a error, can some explain me why this happens and how to solve it? Answer yes you can type it all in one
How to call Kotlin suspending coroutine function from Java 7
I’m trying to call Kotlin function from Java 7. I’m using coroutines and this called function is suspending, for example: I was using coroutines in version 0.25.3 and I could emulate simple Java callback style by passing Continuation<U> instance as an argument to suspending function, e.g. Ho…
How do I check divisibility in Java?
I am trying to check if on number is divisible by another, and currently I use this method: Is there a simpler way? Answer You can use modulus operator like this in your condition,
How to use custom data base dialect in spring data?
I need to avoid some bug in db2 dialect in hibernate. I use spring data + gradle (several modules) + kotlin I created my custom dialect And try to add it to application.properties But spring data continuous using DB2Dialect I tried the same code but using java + maven + the same spring data and it’s wor…
How likely is BigDecimal to cause memory issues for a POS program?
I understand that BigDecimal is the most accurate way to express currency because treating currency values as a floating-point data type tends to cause rounding errors. However, I also understand that BigDecimal calculations require more memory. That said, is using BigDecimal instead of float or double really…
How to solve infinite readLine while
I have a program and one of the methods I use is for counting the lines a .txt file has and return an integer value. The problem is when I execute it, despite I wrote if my line is == null the while has to stop, the while loop keeps going, ignoring the nulls it gets infinitely. I don’t know
Can’t run testng.xml in Cucumber-Maven(TestNG)
In eclipse IDE, I have created a basic cucumber framework by using Maven project. I have added all the dependencies required in pom.xml.For TestNG plugin added below dependencies. But ‘TestNG Suite’ option was not coming in preferences,so installed TestNG through Help->Install New Software. Fra…
How to catch warning “Broker may not be available” at the Spring Kafka Listener
I am working on a POC for implementing a kafka cluster in my project. I have setup a kafka cluster in my local machine with 3 brokers. Now I am sending messages to the Kafka server using Spring MVC REST service which is internally using Spring Kafka to produce and consume messages to and from the Kafka cluste…