How to implement a connection for a separate thread?

Question

Java

The code is basically this:
class A extends Thread {
new Thread (new class B).start()
}
class B Implements Runnable{
public B () {
//defined logic
....
}
public void run(){
new db_connection() ;
}
}
class db_connection {
public db_connection() {
if (driver == null) {
try {
driver = new FabricMySQLDriver();
DriverManager.registerDriver(driver);
} catch (SQLException e) {
e.printStackTrace();
}
try {
connection = DriverManager.getConnection(url, root, password);
System.out.print("Connection succeeded"+"\n");
} catch (SQLException e) {
System.out.print("Connection failed");
}
} else {
try {
connection = DriverManager.getConnection(url, root, password);
} catch (SQLException e) {
e.printStackTrace();
}
}
return connection;
}
}
The question is that for each thread in this case there will be a separate connection or does everyone have the same one? Logically, I understand that everyone should have their own, but it doesn’t work out that way. Please tell me what is wrong

Answer 1

Why do you need 1 connection 1 thread?
Use pools to work with the database.