Hello i have a problem with the code i’ve written down below. From what i’ve understand so far what is passed to the method is the memory reference of charArray thus the variable charArray and tabCar should point at the same memory place. thus the modification done in my method reverseArray should be seen but somehow the 2 print statement
Tag: java
Modifiying time in LocalTimeDate object
Given a LocalDateTime object in Java. How do I set the time for this to 00:00:00 ? One way is to create a new LocalDateTime object with the same date as this one and set it to 0. Is there another way to do it? Answer A given LocalDateTime object can not be modified, since those are immutable. But you
Displaying data from Firebase into custom Info Window
I’m trying to display a couple of user details from Firebase into a custom Map Marker after the location data has been retrieved from the database but I don’t know if I should implement FirebaseRecyclerAdapter or a normal one. How should I do this? I’m trying to at least retrieve the user’s name, emergency type, and alert level and display
Kotlin/java – How to convert a date time string to Instant?
I am trying to create an instance of Instant from date and time strings. Date is formatted like this yyyy-MM-dd. So the values could look like this: I am trying to make a valid instant from this 2 strings like this: I have also tried with it: But, that is not working, I get: Answer You can combine the date
How can I get notified when money has been sent to a particular Bitcoin address on a local regtest network?
I want to programmatically detect whenever someone sends Bitcoin to some address. This happens on a local testnet which I start using this docker-compose.yml file. Once the local testnet runs, I create a new address using Let’s say it returns 2N23tWAFEtBtTgxNjBNmnwzsiPdLcNek181. I put this address into the following Java code: Then I start the Java application with this class. Then
All array combinations with zero in a loop
The following array is given I now want to loop to output all combinations of these numbers with 0. Each number can occur alone or with any other numbers in the array (the rest should be 0). The original position of the numbers should be maintained when they are included in a combination. The numbers of the original array should
Return type method “Return value of the method is never used” problem
i have a task to complete. I have to create a return type method takes String array as an argument and returns to int. So my method works completely fine i will use it to count multiple elements of an element in an array but on method name it says “Return value of the method is never used”. I just
How do I pull out fields from a custom class using streams? (Without using for/while loops)
I would like to know how to pull out field and make it become a list using streams. For example, if I have a list of Pairs, Pair[2] { Pair<3,5>,Pair<5,7>}, I would like to make it become Integer[3] {3,5,7}. (After using Stream.distinct() to remove the dupicate 5) Pair class is provided if that is needed. Answer You want to turn
Add https to missing strings of an array?
I’m writing an app for a client who doesn’t have an official API but wants the app to extract video links from his website so I wrote a logic using jsoup. Everything seems to work fine except some of the links don’t start with https so I’m trying to add it before the URL. Here’s my code: The website contains
BigTable ReadModifyWriteRow Support for Mapping Function
I am aware that BigTable supports operations append and increment using ReadModifyWriteRow requests, but I’m wondering if there is support or an alternative way to use more generic mapping functions where the value from the cell can be accessed and modified within some sort of closure? For instance, bitwise ANDing a long value in a cell: Answer Doing a mapping