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Tag: java

How to solve this java problem efficiently [closed]

Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 months ago. Improve this question I am trying to solve this problem and I worked out a solution but its too slow, this is my …

The Kafka topic is here, a Java consumer program finds it, but lists none of its content, while a kafka-console-consumer is able to

It’s my first Kafka program. From a kafka_2.13-3.1.0 instance, I created a Kafka topic poids_garmin_brut and filled it with this csv: And at anytime now, before or after running the program I’ll show, its content can be displayed by a kafka-console-consumer command: Here is the Java program, based…

Java Boolean method return is always false [closed]

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 9 m…

Is there a way to @Autowire non overridden methods?

I have an interface that is implemented by multiple classes, and these classes also have some extra methods. If I autowire the class. Is there a way I can autowire these extra methods? Example- Interface Service 1 Service 2 If I try to directly Autowire the service like this- then I am getting error something…

Java 8 List from String and List of String

I want to generate a list of strings, comprising id and external ids, from a list of Bean. I got it using the below code, but here I need to do the stream twice. Is there any better way to rewrite this code? Answer Use Stream.concat inside the flatMap operation: