I’m working with Java 8 on eclipse and trying to use regex to detect strings in a file, but I’m not detecting anything. I’ve tested the regex on its own and it successfully match’s strings in the file …
Tag: java-8
How To Store Values in Hashmap (comma Separated) with Same Key using Java Stream API?
I have a object named EntityObjectDTO like below: This AttributeType is an enum and can have values (RAW,REFERRED,ORIGINAL). I am trying to store all the attributes names and dataType into Hashmap of String key and value. This DataType can be duplicate as well. Input: Expected in a HashMap: {“Vehicle”,”name1,name2″} {“Person”,”name3″} This is what I tried: But by this I am
Why use lambda over normal methods?
So suppose my application does lots of repetitive work, for example let’s say my application checks lots of various Lists if they’re empty or not. There are two methods by which I can accomplish this functionality – (there maybe other methods but since my goal is to understand the difference of the two methods and not the functionality itself here
Lambda for comparing two lists of map id fields for missing ids
I have two lists of maps, and each map as an id field. I need to compare these two lists against one another to find missing ids from collectionB (“7777” in the below) I am really looking to learn more about stream() so any help with this would be appreciated. As you can tell I am not really sure where
Java8 how to get list of objects based on the 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 2 years ago. Improve this question Code is here order is having shipment and shipment having items and items
Java – how to improve on this function (Java 8 streams)
I’ve coded a function that finds the unique characters in a string using Java 8 streams, based on an example here. To me, it’s pretty non-intuitive, maybe because I’m still learning streams. Is there any way to make this more readable? Here’s the code: Answer For calculating the actual frequencies, you’re pretty much at a minimal example already! And for
Memory Leak Example -references and objects [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 2 years ago. Improve this question I have the below method.Suppose i call A.m1() 10,000 times from class B.
openjdk-8-jdk – missing src.zip?
Below is the required info – To query the installed binaries, i tried below – On looking in to the jvm/java-8-openjdk-amd64 directory, I see the link for src.zip is broken Now how do i get the sources, i think i can get them manually – is this the only option I am left with?? Answer assuming you are running Ubuntu
Specific JDK in eclipse.ini for Eclipse IDE version 2020-09 use JDK 15, not default JDK what declared in system environment variable
Eclipse 2020-09, Error: I must set Java environment to JDK 1.8 for Gradle work correctly in some case. File eclipse.ini but Eclipse still not start. My JDKs in my PC: How to declare JDK 15 to eclipse.ini ? Answer -vm and C:Program FilesJavajdk-15binjavaw.exe have to be two lines directly before the line -vmargs, not after that line (see Eclipse wiki:
Java 8 find element matching in a list of objects where each object has another object
I have two classes: I have a List<SampleClass> sampleClassList. I need to find the find element in the list which has a particular labelName and labelValue using Java 8. If I need to get the SampleClass object based on testString I would do, Now that the filtering involves Label class, I am unable to figure out how to do that.