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 2 years ago. Improve this question I have to read commands from a file I have and take necessary actions according to each command. I was able to find out the
Spring PropertySourcesPlaceholderConfigurer beans: resolve property value at runtime
I am loading properties with multiple PropertySourcesPlaceholderConfigurer beans and setting placeholder prefix-es: While I can inject a property value by specifying it’s index and key like this: Sometimes I need to determine the value of the prefix (‘foo’) at runtime and dynamically resolve the property value. Is this possible? If not, which alternative solutions are recommended for this use case?
Explanation of card shuffling algorithm (java)
I was trying to better understand in a common Java shuffle deck of cards algorithm, this piece of code: // Random for remaining positions. int r = i + rand.nextInt(52 – i); Why is it necessary to &…
The order of the advices inside the same aspect in Aspectj
How do you determine the order of advices inside the same aspect when you have multiple arounds, befores and afters and all of them “point” to the same pointcut? I have read the aspectj documentation, but i just can’t get it. Answer You claim to have read the AspectJ manual. Why don’t you just link to the corresponding pages you
How do you modify default enum (de)serialization for non-annotated enums but retain standard behavior (@JsonProperty/@JsonValue/…) in Jackson?
Currently jackson (uncustomized) serializes enums like this: If there is @JsonProperty or @JsonValue, they are used to derive serialized name Otherwise, standard serialization is carried out: index or toString() might be used (depending on the mapper settings), or .name() is called by default For deserialization, it’s like this: If there is @JsonProperty, @JsonValue or @JsonCreator, they influence deserialization Otherwise, standard
Why this Java code is showing identifier expected error? [closed]
I am learning Java and came across this problem. The problem statement is not much important here. While running the code I am getting an error. The code is class constructor1 { Public static void …
Recyclerview is not dispaying the image
I am using this code to display a preset image in recyclerview, but for some reason it wont display. If anyone has any fixes I would be greatly indebted to them if they share it. My Main Activty: …
Null pointer Exception on Recycler View On item click listener Activity Close when item got clicked
Hello I am new in Android development I have tried different way to show data in RecyclerView from firebase. At first I set on click listener on item of RecyclerView and it work’s fine but After that I make some changes in code now I am trying to test it’s showing Null Exception pointer but I didn’t change anything on
Remove every space EXCEPT leading spaces
I need to remove every spaces from a String EXCEPT leading spaces. I have some strings that look like this : And I am trying to achieve this : That’s like a reverse trim(). What’s the most efficient way to go about it ? Answer You can use replaceAll with this regex (?<=S)(s+)(?=S) like this : Examples of input &
Custom AOP spring boot annotation with ribbon client blocking api call with return “1”
I have really poor experience with ribbon/eureka so forgive me if this is a stupid question: I have two different microservice both connected to a discovery server, the first one calls the second …