I am saving a document to Google Cloud Firestore using Google Cloud Functions in Java language. I want to add a listener to future here. I am unable to find a Runnable which can serve the purpose here. I know I can call future.get() method to hold the execution and get the WriteResult object but I don’t…
Tag: java
Java Optional query string paramters and Server side API’s
Here is my requirement: Step Five: Add searching by title This method’s purpose is to enable searching by title. You’ll pass in an optional query string parameter that returns all auctions with the search term in the title. In AuctionController.java, return to the list() action method. Add a Strin…
JavaFX runtime components are missing, even though I already have them in my VM options and Modules
I am getting this error: I checked multiple solutions on YouTube and StackOverflow such as https://www.youtube.com/watch?v=KKI7tDozPog and Error: JavaFX runtime components are missing, and are required to run this application with JDK 11 As a result, I followed their advice and added what they said to my VM o…
How exit from method in a switch expression?
I’m studying switch expression, and I’d like to know how to pass control to the invoker method because “yield” just exits from the switch expression. I can’t find any way to make it behave like the classic switch statement. Is it even possible? UPDATE: Here’s a little piece…
Java Project Build and run problem with FX
i’m trying run a project with this architecture… And, when i press “Run” button the code gives me this error… My code of my Main… And i have this run cofiguration: –module-path “C:UsersGiovaDownloadsjavafx-sdk-17.0.0.1lib” –add-modules=javafx.control…
Why String index out of range?
below is my code for Leetcode 9 Palindrome Number. It shows “String index out of range error” for line 8 when the testcase is 121. Can anyone tell me why this happened? Thanks! Answer In the while loop, j remains constant whereas your “s” is reducing 1 char each loop. Example: as you s…
Difference between addChildEventListener, addValueEventListener, and addOnCompleteListener when using orderByChild()?
I’m trying to sort and display data from Firebase using orderByChild() and used: I kept on wondering why it’s not sorting until I realized that childEventListener was used in the documentation. It should’ve been: What is the difference between the two and addValueEventListener when it comes …
Action bar content is not hiding
so i want to use toolbar but when i change DarkActionBar to NoActionBar in the styles,action bar doesnt remove completely and app title is on my toolbar. https://i.stack.imgur.com/0X722.jpg here is my xml code: what can i do? Answer i think you have in MainActivity code like this and you got the result as sho…
How can I batch the audit table inserts using the Hibernate Envers ValidityAuditStrategy
I’m using Hibernate envers for auditing, and most of my tables are performing batch inserts just fine. However, on one of my entities I have an audited collection, which seems like it doesnt want to batch. MyEntity: (Not sure if this is important, Im using postgresql). In the logs I see 1000s of these s…
how to pass variables between three different methods in java
hello I need to pass value from method A() to Method C() then after call Method C() inside the method B(). please any one show me the syntax. for example: I need this payerPhone the next follow method called onActivityResult() Answer Firstly I strongly recommend you to gain some teoretical knowledge about jav…