Whenever I try to connect to my Redis server from my Java application using Jedis, I get JedisConnectionException: Failed to connect to any host resolved for DNS name. The Java application runs on the same machine as the Redis server.…
I have a dynamic nested json string and I wanted to limit the string value of all keys to have max length of 5 chars. Using: Java fasterxml.jackson For Json String like below: `String inputJsonString = "{"key1":"bla bla bla bla","key2":{"key21":"bla…
I'am using jakarta and when I run the app the "Student" and "Teacher" tables didn't created and only the "User" table is created. What could be the problem ? User class import jakarta.persistence.*; import java.io.Serializable; @Entity public class User implements…
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import java.util.logging.Level; import java.util.logging.Logger; public class App { public static void main(String[] args) { App pro = new App(); pro.createConnection(); } void createConnection(){ try{ Class.forName("com.mysql.cj.jdbc.Drive"); Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb", "root","root"); System.out.print("testinggg"); }catch(ClassNotFoundException…
Context: I want to test my react app with playwright. I have two Buttons who are nearly identical(The name of the both buttoons are bound to the same state, they always have the same name). Therefore i cant locate them…
I am trying to make my app allow users to read pdf files on my app. I have added the uses permission in my manifest file and my code works perfectly fine yet when the runtime permission pops up and…
I wrote the following code: out.println("<form action="PageA" method="post">"); // Table with input fields out.println("<div id='split'>"); out.println("<input type="submit" value="Go" /> </form>"); out.println("<a href="Page B"><button>Back</button></a>"); out.println("</div>"); and now I wanted to format the 2 buttons right next to each other not one…
I've just started learning Java from Head First. I'm on Ubuntu 22.04.2 LTS and coding in text editor. I have no issue compiling and running a program in the terminal, my problem is that System.out.println() works whereas System.out.print() doesn't show…
Trying to connect with MySQL server with my SpringBoot application but facing above issue, can someone suggest? spring.datasource.url=jdbc:mysql://localhost:3306/myblog spring.datasourse.username=Admin spring.datasourse.password=Admin spring.jpa.properties.hibernate.dailect=org.hibernate.dialect.MySQLDialect spring.jpa.hibernate.ddl-auto=update Error as per below java.sql.SQLException: Access denied for user 'hp'@'localhost' (using password: NO) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:130) ~[mysql-connector-j-8.0.33.jar:8.0.33] at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)…
Im building a java microservice that uses AWS Aurora Mysql for some operations. the code connects to the database fine and the first 3 queries I had were throwing a similar error till I realized I was missing semicolons. The…