I have a map with data I got from my database and I am having trouble to find an optimal way to check if the value of one of my fields is empty. The thing is like this. I got 4 ...
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I have installed a postgres image on a docker container – I also installed pgadmin and connected the postgres and pgadmin by adding them to a docker network. I am able to connect to the db via pgadmin I now want to ...
In my hierarchy_resoponse table have a values with ‘*’ and other values for the hierachy_id I want to select hierarcy_response table record select hierarchy_id = ‘*’ records as first records and other records later. Ex -: Records in my table -: | response_id ...
package sth.hibernate; import org.hibernate.cfg.Configuration; import org.hibernate.Session; import org.hibernate.SessionFactory; import sth.hibernate.entitty.Users; public class App { public static void main(String[] args) { SessionFactory factory = new Configuration() ...
I execute this code and get an error: package com.zetcode; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.SQLException; import java.util.logging.Level; import java.util.logging.Logger; public class JavaPostgreSqlPrepared { public static void main(String[] args) { String url = "jdbc:postgresql://localhost:5432/testdb"; ...
I’m trying to run a program in java that use mysql connector java to JDBC, the program run in Eclipse but in terminal I get that error java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ...
My application uses SQLite and the JDBC driver.When I export my .jar from Eclipse it doesn’t run on my computer because it’s on an older version of Java. I could downgrade Java, but then I can’t have it run on ...
MyBatisSystemException while SpringBoot test.And I solved it for a whole day.Please Check the connnection in following ways. 1.Check URL,username,password in application.yml. 2. Details about this exception 2022-10-10 16:27:49.882 ERROR 19532 --- [nio-8080-exec-3] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] ...
I’m trying to add some data to my database table in MySQL, but I get an error that I don’t understand. Here is a part of the code that (I think) is generating the error. private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { ...
I have this code where I am trying to insert the data from user input on the site using JBDC but I get the following error: java.sql.SQLException: Data truncated for column 'empsalary' at row 1 My java code is here: int salary ...