I am unable to generate a folder/HTML report of jmeter in the command line. I have previously upgraded to the latest java and somehow it did not work. I have downloaded jdk8 but encountered this message below: jmeter: line 128: [: : integer expression expected jmeter: line 199: /Library/Internet Plug-Ins/Java…
Tag: java-8
Generic type-casting method returning an Optional object
I have a method: That allows me to invoke it like so: And this is great. Except, now, I want load(…) to return an Optional<???> so that the interaction would look something like: What changes I need to make to load(…) method to make it capable of returning an Optional of <T>? Answer Yo…
Sorting a List of Maps dynamically in Ascending and Descending order
I am having Maps inside a List. I need to sort the List based on the input dynamically by passing it as a parameter into the method sortData. It is working as expected, but the problem is that am not able to sort the list in reverse order. I’m getting an Error : The method get(String) is undefined for t…
Java 1.8.0_311 on Solaris 9 returns relocation error, symbols unsetenv and sema_timedwait not found
This is similar to this question about Java 1.6. As the OP of that question, I have a Solaris on a SPARC v9 architecture (physical SUN Fire V445): Calling java from the latest Oracle-distributed Java 8 for SPARC 64-bit gets me this: Looking at libjvm.so more closely, not only unsetenv is missing: I assume tha…
Compilation error while merging two Maps is being issued for Map.Entry::getKey
Whenever I use Map.Entry::getKey in my streams for my public methods, I get an issue around my method not being static. I even tried making my method static, and it didn’t work. Below is the compile error I am getting from using Map.Entry()::getKey() : My code Answer The method arguments are of type Map…
Java 8 calculate how many 1st of the months between two dates
I have two dates: I want the result = 1 (for the date, 2022-04-01) Answer tl;dr See this code run live at IdeOne.com. 1 Details First, parse the inputs as LocalDate objects. The LocalDate#datesUntil method creates a stream of LocalDate objects between the two values. We can filter that stream to keep only the…
Eclipse not giving warning when running java code which has compilation errors
When running a Java/Spring code, If the application has compilation errors we get a popup warning as ” Code contains compilation error..Continue running “. There is a checkbox there as ” Do not ask next time” I ticked that and allowed, Now Even if my large Java/spring applications cont…
Filter distinct groups and get average of String values parsing as Integer or Double
I have a POJO like below: And a List like below: Now I am trying to filter and group all the employees by department and need to get the highest spending department. If salary is of type Double (say) I can do it like below: And I get the expected output: But I am clueless what to do if I
OpenJdK 8 – Can’t compile package javafx.util does not exist
I build my java project by Maven. When I try to compile my java project by OpenJdk 1.8.0_322: I get error: P.S. If I use jdk1.8.0_202 from Oracle the project success compile! P.P.S. The project must be compile by java 8. It’s client requirements. Answer tl;dr Either: Develop/deploy on a JDK that include…
How to use Java reduce() function on stream of objects with BinaryOperator
combinedResult is a stream of type ObjectNode that consists of data like this for example: I want to get a result like this: I have written the below BinaryOperator function But when I try this out, I get below result: I understand that this is because I return o1 as default value in the BinaryOperator, but I…