I have tried to connect to Postgresql in a dcker container via HeidiSQL but it was failed on local machine. But before lets practice with docker a little bit In this…
Gateway and Microservices using JHipster JDL and Docker Compose
Installing nodejs with NPM Installing JHispter Intalling Docker JHipster JDL Docker Compose Installing Node.js Install Node.js from the Node.js website (please use an LTS 64-bit version, non-LTS versions are not supported) And…
Spring Boot Docker
WSL 2 installation is incomplete. The WSL 2 Linux kernel is now installed using a separate MSI update package. Please click the link and follow the instructions to install the…
Liquibase could not start correctly, your database is NOT ready: Validation Failed
Solution: You can try maven goal mvn liquibase:clearCheckSums and then try running app again if you are using maven : else if you are using gradle : liquibase.exception.DatabaseException: java.sql.SQLException: Access denied for user ‘root’@’localhost’ (using password: NO) You…
IntelliJ Idea mapstruct java: Internal error in the mapping processor: java.lang.NullPointerException
or Edit: To fix the error in IDEA 2020, you can add in menu File | Settings | Build, Execution, Deployment | Compiler | User-local build process VM options (overrides Shared…
If “An error has occured”. JHipster
Server application generated successfully. Run your Spring Boot application: jHipster support java 8 – 14 So i have reinstalled java from 15 to 11 and its done Client application generated…
Java Enum valueOf
Java.lang.Enum.valueOf() Method – Tutorialspoint Source: (tutorialspoint.com) Java.lang.Enum.valueOf() Method – The java.lang.Enum.valueOf() method returns the enum constant of the specified enumtype with the specified name. The name must match exactly an identifier…
Can I concatenate multiple MySQL rows into one field?
Using MySQL, I can do something like: My Output: but instead I just want 1 row, 1 col: Expected Output: Answer You can use GROUP_CONCAT:
Java substring
What is a substring? The java substring() method of String class is used for getting a substring from the string. The String class represents character strings. All string literals in Java programs,…
Java List to array
Converting a List to an array using toArray()