I have design a webApp with NetBeans IDE. It works fine on localhost, but when I deploy it on my host, trying to access the servlets give me a 404 error. My servlet dos include the URLpattern and the Name specifications, like this The servlet just does a “redirection” to a .jsp If I use the URL ww…
package javafx.util does not exist?
I am using openjdk version “1.8.0_252” and I also separately install the javafx and currently the version is javafx.version=11.0.2-internal. I have added the javafx lib path in the intellij. There is no error while writing the code javafx Pair. However when I build the project with sudo mvn clean …
String[] no longer working in visual code studio
I updated Visual Studio Code, created a new file and messed around with Java and something broke. Can someone please help me out? import java.util.*; public class test { public static void main(…
How to resolve (java.lang.ClassNotFoundException: com.mongodb.spark.sql.DefaultSource.DefaultSource) in pyspark i’m using pycharm
With Pycharm I’m getting this error: java.lang.ClassNotFoundException: com.mongodb.spark.sql.DefaultSource.DefaultSource How can I resolve this issue? I tried: I also tried setting the classpath of the jars also .bash_profile: I had many jars in my_jars but still didn’t get it to work. I keep gett…
How can I check bluetooth LE ScanResult with android ble scanning app?
Hello I’m working on simple BLE scanning app with java but it doesn’t work. I referred https://github.com/benlc/ble, android developers and completed the source code. also permission is added in manifest file I want to know why it isn’t work and how to make it work. I checked ScanResult with…
What is the point of Apache Lang3 StopWatch.split()?
I am currently evaluating implementations between Apache StopWatch and Guava’s Stopwatch and the split functionality in the former intrigued me, but I am struggling to understand what exactly it does, and what value it has. According to the documentation for StopWatch: https://commons.apache.org/proper/…
How to get Firebase token of current user
I’m buildning an app where a logged in user can invite another user through pressing a button, so then the invited user will get a push notification. My idea is that if I can save the token for each user in the database, then when a user presses the “invite button” it will find that users to…
JavaFX Multithreading and Progressbar
I have a problem with freeze GUI. I’m a beginner with JavaFX and don’t know what I’m doing wrong. VideoToImages is background method from which I’m getting IntegerProperties to set progressBar value. …
How I can make my program generate a new random number?
So I tried closing the window and reopening it afterwards so the whole program would start from the beginning. That didn’t work. Neither does Revalidating the frame (f.revalidate(), f.repaint()).. I’ve tried looping the if-functions with a while loop, setting the boolean to false when the number h…
What does the method getNetInterfaceConfig(String name) of Sigar get when name is null?
What does the following codes mean? I know the function of getNetInterfaceConfig(String name) is to get a specific NetInterfaceConfig, but what does it get when it’s parameter is null? Answer I would normally suggest you use the documentation, except that there is none anymore for SIGAR. But you can fin…