Is the DriverManager class a Singleton in Java? -

from this source read that:

you may have experience working jdbc drivers. example, classloader attempts load , link driver class in "org.gjt.mm.mysql" package. if successful, static initializer called.

class.forname("org.gjt.mm.mysql.driver");  connection con = drivermanager.getconnection(url,"mylogin", "mypassword");  

let's see why need class.forname() load driver memory. jdbc drivers have static block registers drivermanager , drivermanager has static initializer only.

the mysql jdbc driver has static initializer looks this:

 static {      try {          java.sql.drivermanager.registerdriver(new driver());      } catch (sqlexception e) {          throw new runtimeexception("can't register driver!");      } } 

does mean drivermanager singleton class?

it's not singleton. it's pure utility class, static methods. there 0 instance of class. singleton have 1 instance of class, , have access instance call instance methods on it.

java documented, , it's open-source. can @ source of class understand how works.