I have a grid with 7 columns and some rows. Every column has a fixed width (300px), so there is an horizontal scroll. I need to lock first column so that this column is excluded from scroll. In other words, I would like to start scroll from second column. I know there is “frozen” functionality to …
Tag: java
Boolean recursive static method that gets an array of integers
I’m trying to write a method that would Return true if it is possible to divide all the members of an array into two different groups of equal size so that the sum of the members of the two groups is equal. If this is not possible, the method Return false. The conditions are: The method should be recurs…
Converting Shell Script to Dockerfile
I have Java app and want to generate docker image, I have shell script like this: And I try to convert it into Dockerfile like this It can be generated, but there’s an error when I try to run it like this: I’ve also changed this script RUN for rJarFile in `ls ${APPLICATION_DIR}/lib/*.jar`; do expo…
com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected a string but was BEGIN_OBJECT at line 1 column 39 path $.message
i am making login function in android using retrofit. I have created an endpoint for login validation, then I have tested it using Postman using raw (json) and it worked. But when I enter the endpoint into android using retrofit I get an error message like this: com.google.gson.JsonSyntaxException: java.lang.…
Webapp deployment fails after maven implemtation
I am facing issue in deploying my web app on tomcat after I have implemented Maven for dependency management. Before Maven implementation, it was a plain web app where every thing was used to be managed manually. I started upgrading app with frameworks for learning and decided to implement Maven for dependenc…
Spring Boot SessionScoped Object not expired after logout. Autowires two different objects in different controllers
I needed to auto wire logged in User Object in my controller /service classes. So i created a util Bean as and used in controller class as In most controllers it works OK, but in some controllers first logged in user object doesn’t change until I restart the application. my logout configuration is as fo…
I am unable to test the below mentioned method in JUnit testcase and getting ClassCastException
For below method i am writing JUnit testcase for sonarqube coverage. JUnit testcase: but, unable to mock or test the below line in JUnit testcase. MessageHeaders headers = ((MessagingException) message.getPayload()).getFailedMessage().getHeaders(); Exception: Answer Your productive code means you expect messa…
Should I avoid big transaction and exclude read-only queries from transaction
I’ve seen articles saying that we should try to limit the scope of transaction, e.g. instead of doing this: We should exclude queryData from the transaction by using Spring’s TransactionTemplate (or just move it out of the transactional method): But my understanding is that since JDBC will always …
Snowflake exception While unwrapping snowflake objects
I am Using snowflake-jdbc-13.3.8.jar. while executing below code having unwrap call, I am getting exception. Pls guide what am I missing? Answer You’re calling getQueryId() rather than getQueryID(), observe ID is in capitals. The unwrap works, here is an example. First I create a simple stored procedure…
How to read database view metadata
I’m trying to use Java and Spring to read the table structure for a MySQL database. The code I’ve got (based on other answers on this site) is: If I call this code with the name of any of my database tables, it works perfectly. However, when I pass the name of any of my database views, I get the