Below is code I’ve written to try an output the sum of each akka message received which has been edited from this guide : https://doc.akka.io/docs/akka/current/stream/stream-flows-and-basics.html The fold operation seems to cause nothing to outputted on the console. However if I use instead of Then the …
Tag: java
local variable initialization were wrong java [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 6 months ago. Improve this question I am new to java, why a, b,c initialization are wrong in the following code. Answer Java wo…
i want to find the span of a array. Span is defined as difference of maximum value and minimum value [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 1 year ago. Improve this question I trie…
stop other service calls if using Completable future to call multiple services if any of service fails
I am using completable future to invoke multiple service calls. And then I am using : Well why am i using this kind of code ??? by doing that I am able to improve performance. If service1 succeeds with 200 & takes 3 sec of time , service2 succeeds with 200 & takes 3 sec of time , service3 succeeds
Count how many pairs of a number appear in an array
Lets say with the array: I want the output to be: For that I created a Hash table. The code : Not sure what to do next to print out the desired output. Been stuck in this simple part for a long time. Answer The calculation of frequencies seems to be fine, only printing part needs to be addressed. To
How to create a JPA entity for a table that doesn’t have a Primary Key or Unique Key column
l have a table without a Primary Key or Unique Key column. I need to manipulate this table from the Spring application by using JPA and Hibernate. While I was trying to map this table’s entity, it fails because there’s no @Id mapping. I tried to make a composite id from all the entity properties to ensu…
Does GlassFish servlet container use that catalina?
I am running the same servlet application in both Apache Tomcat and GlassFish servers. I wanted to see the ServletConfig and ServletContext implementation class names. Surprisingly, I found that GlassFish is also using from Apache Tomcat’s catalina classes. Is my observation correct? If yes, why isnR…
What is the right printf syntax when formatting a double? [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 1 year ago. Improve this question I̵…
How do I add two string elements in vector?
I am new to Java and learning through a task. I have tried to create a program but when I input my name it is raising a InputMismatchException exception. Here is my code: Name.java Answer Your problem is not with vector, it is with scanner methods; you can read this answer, it will give you a good idea about …
Need jar for WebLogic exporter “https://github.com/oracle/weblogic-monitoring-exporter#Configuration”
Can you please help me to get the jar file for WebLogic exporter “https://github.com/oracle/weblogic-monitoring-exporter#Configuration” . I am new to java packaging and tried many times with maven install command it is giving plugin missing error. Can you please help me with the jar file or steps …