We are trying to connect to a clickhouse server using jdbc drivers. Our code snippet is in scala and would not be much different in java We get the following error : We went through a few other pages mentioning the same error and in keeping with the advice there, we used the latest version of the driver (0.3.1-patch). We
Tag: java
Error running a Java 8 batch with a jdk17
I’m trying to run a java 8 batch with a jdk17, the project is built with a jre1.8.0_192 and I put the following options in the VM: –add-modules=ALL-SYSTEM –add-opens=java.base/java.lang=ALL-UNNAMED –add-opens=java.base/java.math=ALL-UNNAMED –add-opens=java.base/java.net=ALL-UNNAMED –add-opens=java.base/java.util=ALL-UNNAMED –add-opens=jdk.attach/sun.tools.attach=ALL-UNNAMED -Djava.locale.providers=JRE,SPI I get the following error at runtime: java.lang.NullPointerException: Cannot invoke “Object.getClass()” because “obj” is null at java.lang.reflect.Method.invoke(Method.java:561) ~[?:?] at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333) ~[spring-aop-4.3.25.RELEASE.jar:4.3.25.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) ~[spring-aop-4.3.25.RELEASE.jar:4.3.25.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
Loading of TableRows and TextViews into TableLayout after onCreate
I would like to load TableRows with TextViews into the table outside of oncreate. It should look like that. The problem is that I want to do the whole thing outside of the oncreate function. The rows and text views should only be added at runtime. If I do it outside then the added elements are rendered but not displayed.
Concerns about the FILES AND MEDIA PERMISSIONS on Android as a developer
I’m developing an app that saves data into a database, I’m trying to backup and restore that database which I am able to do, my issue is with the “ominous” permmission popup on API30+ Allow management of all files Allow this app to access modify and delete files on your device….. Allow this app to access, modify and delete files
Jackson serializes Enum to NAME not value (XML) Java
I have this Enum defined: I have a model object that has a OutputFormatEnum variable called OutputFormat. When I set this variable to OutputFormatEnum.PDF, it is initially registered as “pdf” which is what it should be. When I then execute the following code: It sets the value of OutputFormat in streamTemplate to “PDF”, where it should be “pdf” (the value
How to Get Value from JSON in Firebase Remote Config
I am a novice to Android app development and Firebase. I want to know how can I get the value (String & Int) in the JSONArray file stored in Firebase Remote Config? I use Firebase Remote Config with the final goal to compare my app’s version code and priority level with the one stored in Firebase Remote Config to determine
Sonar Issue-Possible null pointer dereference due to return value of called method. Return value from a method is dereferenced without a null check
I have a void method which is being called with a string argument from a parent method. Answer getText seems to be more than a simple getter. The second time it evidently may return null.
Count nodes that are bigger than all their sons
I have to make a programm that counts the nodes bigger than their sons without including the leaf nodes for example: This is my approach: But I can’t see the error Answer Assuming info is an int, this could work for you. I haven’t tested the code, so let me know if there are issues.
Extract file name from Java URL (file: and http/https protocol)?
I have various urls like this: These are all valid URLS, and I can convert them to a URL in java without errors: I want to extract the filename from each of the examples above, so I’m left with just: I have tried the following, but this doesn’t work for example b above (which is a valid URL): I can
Using SMOTE on java raises Comparison method violates its general contract
I’m working on a project in java and I need to use Weka’s API. I use Maven to manage dependencies and, in particular, I have the following one: In this version, the SMOTE class is not kept, but I really need it; that’s why I also added in my pom.xml the following dependency: In my Java code, i also try