Im trying to build a Java Multithreaded Client-Server chat application with a database. The database is to store username and password. I am able to build a basic Java Multithreaded Client-Server chat application, but have no idea how to create the database side. Ive found lots of downloadable source code but I’m looking for a tutorial so I can learn
Tag: database
Room database RawQuery() is not work on “IN” and “NOT IN” clause
I have my one table like UserTable. // Now in My MainActivity.class file, I have use following code: My query is running in normal database, but when I was pass array of user ids then, in @RawQuery() method of dao class is not supported for “IN” clause used in where condition “WHERE userId IN (?)”. How, I will use “IN”
executeUpdate() returns always 1 with MERGE statement
ExecuteUpdate() is always returning 1. Pls suggest and appreciate any input. Procedure: Java code: stmt.executeUpdate() – always returns 1, even though insertion happens only once. Appreciate any inputs on this. Ideally, if there are no insertions or errors, it should return 0 or any exception trace. Pls, suggest.** Answer We can make the column a primary key. Now when multiple
How to check if timestamp between two timestamps postgres?
I am working on a spring api where I am using postgres and saving a field of type timestamp with field name as created_date. Now I want to check whether this field is between two different timestamps. Right now I am using this: Is there a way I can use BETWEEN here for this operation? Answer You can do it
How do I work out the entity relationships in my game collection database?
I have a game collection application where I want to create seperate lists of games. I am using Spring JPA and Hibernate in the backend and this is what the Entity classes look like right now. I am not sure if this is even the right approach… In the end, I want to create a Spring Boot application where users
Save a Resultset to an Array in java
I want to save the result of a whole Mysql table in an array it returns this to me from the database run: brandon Brandon Julio Daniel BUILD SUCCESSFUL (total time: 1 second) I want to save what is in the database in an array to be able to implement it with a sort and search method that’s why I
After trying to test connection to h2 database or connect whitelabel error occurs
After running Spring boot project and going to localhost:8080/h2-console and after trying to connect to my database I get whitelabel error when i click any button on h2-console screen. I am using in memory database. I am trying to connect to database with classic username:sa and password:(blank) Even after clicking Save i get whitelabel error application properties: pom xml: configure
How to create hibernate request with localdate
I have a user who has an expiration date (dateTime), I need to display all users who have not expired yet. Tried different options with DATA (), or as an example – @Query (name = “SELECT u FROM …
How to connect to IntelliJ Ultimate’s LocalHost MySQL database?
I went to Database > + > Data Source > MySQL Here’s what my panel looks like: This is the error: and here’s my connection file: What could be my problem? I tried searching up for what others have tried but none of them seemed to work and I had to make several copies of my entire project because I
Converting Date and Gender to String using Apache-poi [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed last year. Improve this question How can I set Date and Gender that is in the database? Answer To write Date and Gender in Cell you need to convert them to