I am starting to learn lambdas and i do not understand why java Map has: and not(working just the same, but if value is absent, then defaultValue will be taken from supplier): Adventages i currently see of current solution: defaultValue does not have to be a final/effectively final value looks simpler & n…
Tag: java
Are there any tools to create dummy objects to use for JUnit test cases?
I am writing JUnit test cases to test CRUD operations in DAO classes. It is pretty much boilerplate code and bulk of it is to create the test object and assign dummy values to the instance variables. Are there any tools in Java to create an object and assign dummy values based on the declared type? I don̵…
Thymeleaf Neither BindingResult nor plain target object for bean name ‘person’ available as request attribute
From what I can tell this is set up correctly but I am getting the following error: Form Person.java Controller I looked at Spring-boot and Thmeleaf setup and it looks like my setup is identical. ——————— Update 1 ———————–…
Selenium DOM is not changed after execution of Angular ng-if condition
we have following code on page which has angular ng-if condition. ng-if condition will execute dynamically and pickup tags as per requirements. I have observed on html page that everything is working. I observed following html code after inspecting page. If I print innerHTML of parent element by selenium then…
google protobuffer how to define list of lists in proto file?
I have a class with a list of lists field as below: how to define it in a proto file? Answer You can declare your own “types” in proto files called message. If you’d like to declare a list you should use repeated keyword. Combining those two gives us: You can then use ListOfListsOfStrings me…
How to initialize Google protocol buffers Timestamp in Java?
Google protocol buffers (3.0.0-beta2) offers the well-known type Timestamp. The documentation describes the initialization in Java using System.currentTimeMillis() as following: Is there an alternative way in the recent Java 8? Answer Starting with Java 8, there is the new Date/Time-API which makes this more …
How do I read Google Sheet content via Android’s Drive API?
I’m currently working on an app where the user can pick a Google Sheet file (.xlxs) from their Google Drive. My app will then extract and work with certain content of that Sheet. I’m using the Google Drive API made for Android and I utilize the example classes from Google Drive Android Demos So fa…
Heapsort Within a Given Range
I am trying to write a Heapsort method that only performs the sort within a given range passed into the method. The ranges low and high are passed in and these values correspond to values inside the heap, not indices of the heap. For example, the input array might be: 28 10 49 20 59 61 17 and if low
Android: set fixed item on RecyclerView
I have a RecyclerView, when I click in the first view it adds another view like in the image, what I want is to set the “add” view which ID is “1” to be fixed in the last position of the recycler instead in the first. My adapter: In the activity: Answer I solved it by creating a custom…
Java Jar ClassNotFoundException even though dependent library exists
I am creating a (Minecraft) Forge mod that uses the (unofficial) Discord API, JDA. I am doing this in the Eclipse IDE. In the IDE, I can add the JDA with dependencies just fine and get no errors in my code. Then, using gradlew and compiling it, I get an error when I try running it (in Minecraft). I had