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AndroidViewModel has no zero argument constructor. How to solve this?

I’ve searched for my problem nearly whole the Internet and couldn’t find the answer, which I need. Yes. My question is not unique, but there was no answer, which could help me. So I decided to ask it myself. Now about the problem: …………………………………….. …………. Error: I tried to add a constructor with no arguments in class AuthActivityViewModel, but got

Spring Data JDBC – Many-to-One Relationship

I can’t seem to find any reference online with regards to using a Many-To-One mapping in Spring JDBC. I just saw in the documentation that is not supported but I’m not sure if this is the case. My example is that I want to map my AppUser to a particular Department. For reference, AppUser joins to Department table using DEPARTMENT_ID

Continuity Issue in Java Calculator

I am new to Java, and I’m doing a calculator APP. I’m trying to get my calculator to keep prompting the user for the correct answer (typing Y or N) after the else statement following ‘Invalid Input’. I want the program to continue with the calculations after the correct input is finally entered. I have played around with an embedded

nested for loops inverted half pyramid

for a school project, I am trying to make an inverted half pyramid my code is currently this with this output: desired output: Answer Update (based on the updated requirement): You need a loop to print the = equal to (rows – row number) times. Output: Original answer: Your inner loop should be i.e. for each row, it should start

Store Binary Data in QR Code (ZXING Java Library)

My Java program needs to send a binary payload via QR Code, but I can’t get it to work. I have tried several QR Code libraries and many approaches, but all seem to have this problem. My current implementation uses ZXING. The problem is that all the Java libraries I’ve tried seem to be focused on String payloads, and do

jni.h no such file or directory

To install leJos for NXJ brick i follow the documentation tutorial , i set the variables like this : ` ` i go to build directory to make the ant command in the terminal and the build failed with the following error , i know the problem is surely in jni.h and i tried to fix it but i can’t

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