My app gets the data while its connected to internet but I want the app to get the data offline from cache. Please help I’m new to Firebase.
Does both Heap and Stack of Java reside in RAM, similar to C++?
This question is not about difference between Stack and Heap in Java. In C++, both Stack and Heap are in RAM. How is it in Java? Answer Yes. Stack is used for static memory allocation and Heap for dynamic memory allocation, both stored in the computer’s RAM This is to ensure faster processing of java programs.
How to update array elements in Firestore with Android?
I read this post and this post of the same guy saying that you cannot update array elements. I also read a recent article, where is says that this can be done somehow with arrayUnion or something like that but I cannot get any informations on stackoverflow either in the docs. Is there any way I can solve this? Thanks!
How to implement the Elvis operator in Java 8?
I have the classic “Elvis operator” case, where I’m calling methods that each may return null and chaining them together: In Java 8, the most faithful implementation I’ve found is something like this: I wish that Java’s Optional had something akin to the elvis operator: So that I wouldn’t have to wrap each return value: Is there a more efficient
Gradle – throw exception if project still has SNAPSHOT dependencies
I want to fail the gradle build if the current project still has snapshot dependencies. My code so far only looks for java dependencies, missing the .NET ones so it only works for java projects. I want to make it work for all projects. I need some help in generifying this snippet to be applicable to all types of dependencies(not
How can I store nested Hashmap in Redis?
I want to store netsted HashMap in Redis having single key. For example : Please Suggest : Is there any way to store the above-mentioned data structure? How can we achieve this? Answer Redis doesn’t support it as of now. However there is a way to do it, other than rejson. You can convert it into JSON and store in
Backpressure mechanism in Spring Web-Flux
I’m a starter in Spring Web-Flux. I wrote a controller as follows: I know one of the reactive benefits is Backpressure, and it can balance the request or the response rate. I want to realize how to have backpressure mechanism in Spring Web-Flux. Answer Backpressure in WebFlux In order to understand how Backpressure works in the current implementation of the
MediaPlayer to stop current song when new song is selected in ListView
I am writing a music player app using ListView. When i click a song on the MainActivity, it opens a nowplaying activity and a song starts to play, but if i go back to the ListView and click a new song, the new songs starts to play while the previous song is still playing so both songs play at the
WebView scroll up automatically when scrolling it down little
In web view when I scroll the page little bit down then it scroll up automatically on some pages not all pages but on some pages.Why this happen and what is it solution Here is xml code Here is my code you can check this Here is my java code I set the cookie also to web view and I
AXIS Client 1.4 with JDK 8 gives org.apache.axis.AxisFault: java.util.ConcurrentModificationException
I am using AXIS (1.4) client to invoke SOAP web services and JDK version is 8. Getting following intermittent error for some of the SOAP service invocations. This is happening for 5-10 requests out of 1000 requests under load condition. NOTE: When we used same AXIS client with JDK 7, did not face this issue at all. I tried searching