I’m writing a program about basketball score. My program can run, but there are compilation errors in ActivityMainBindingImpl.java error1: Cannot inherit from final ‘com.example.score.databinding.ActivityMainBinding’ error2: ‘ActivityMainBinding()’ has private access in ‘co…
Tag: java
Putting panels in a big Panel
I want to create a Frame with a big panel with flow layout which contains several smaller panels with a given size. I thought I could do like this: (The JFrame is given) If I run this, I just get my big panel in gray and I only see a small red square in the top middle of my frame,
Why should I use jdk1.8.0 instead of jdk-17?
I am studying Scala, with IntelliJ IDEA. Project SDK was always jdk-17, everything was OK, until now. I began practicing in actors (Akka in action using Scala). Problems (like scalac: Error: Error compiling the sbt component ‘compiler-interface-2.11.8-61.0’) started compiling book examples. The ad…
How do I get a variable collected from a JTextField and give it to a getter method?
Very new to using Java and spent hours looking for a solution, but I cannot find out how to get the input collected by a JTextField with a button and ActionListener then be used for a getter method that can receive idNum so I can use the input in another class. Answer I believe what you are trying to do
reading a whole date and time with spaces in a file
this question may have been asked before but didn’t find any clue for my problem here, here is my problem : I have a file that is like this : abc fg Sat Jan 08 19:06:21 IST 2022 4 4.0 here is my code that reads from the file : now i want each “token.nextToken();“` inside the ShortDeliveries …
Confusion with increment operators in Java in conditional statements
So when thinking about the output my thought process went like this : for the first if condition I thought that since its post increment operator , i value will be used first and then increased so it will execute the if condition and increment the value of i therefore printing output 11 is good for the second…
How to sort a Lucene long date range by date
Problem: I want to search books by date range, but sort the result. Searching by date range works, but the documents are not sorted properly (Insertion order, see ID?): To sort them by date, I changed my code to: Add NumericDocValuesField: Add a Sort: Question: What am I doing wrong? What do I need to change …
Attempt to invoke virtual method ‘void android.widget.ListView.setAdapter(android.widget.ListAdapter)’ on a null object reference :KOTLIN
I am getting this from Logcat 2022-01-07 20:27:46.539 14327-14327/com.example.donedoobnew2 E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.donedoobnew2, PID: 14327 java.lang.NullPointerException: Attempt to invoke virtual method ‘void android.widget.ListView.setAdapter(android.widget.ListAd…
How can I store data with nested object data in Android? [Room]
I have a high dimensional dataset that it provides with a json structure (about 3000 objects, an array of each object and dozens of objects in that array.) I read them with the help of the volley library. I want to save this data. in the database and access it easily. how can I do it I couldn’t find exa…
How to prevent NullPointerException in the finally clause in a Java Class in Domino agent
Java debugging information only returns null without stating the actual cause of the error in the finally clause of the try/catch and not sure on how to get rid of this error message or the cause of it which is related to the recycle method called. Below is the error log: Below are the functions being called …