In Java connecting to mysql, what is the meaning of Class.forName?

Question

What is the purpose of this line?
It does not return a value or sets the state of an existing class / object (or is it?)

Class.forName ("com.mysql.jdbc.Driver").newInstance ();

Answer 1

It uses reflection to look at the class path for the class named "com.mysql.jdbc.Driver" and creates a new instance.

In code when you write

Integer foo = new Integer()

Instead you can write

Integer foo = Class.forName("java.lang.Integer").newInstance()

? , . , , , . , ( Class.forName, )

Answer 2

, com.mysql.jdbc.Driver , :

static {java.sql.DriverManager.registerDriver(new com.mysql.jdbc.Driver())};

forName. , , MySQL.

newInstance, , . .

Answer 3

JDBC MySQL.

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, JDBC .

Answer 4

- , , .

, JVM .class pathpath, newInstance() .

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Answer 5

Calling Class.forName .

Answer 6

.forName( "X" ) X ( ).

Answer 7

java- , ( ) . JVM ( ) Java-.

Class.forName( "className" ) , " " / .

, :

ClassName classInstance = new ClassName();

Answer 8

Class.forName Class . , com.mysql.jdbc.Driver, , . , Class.newInstance() , com.mysql.jdbc.Driver - .

Answer 9

Class.forName( )

, [...],

, ( ) com.mysql.jdbc.Driver

Class.newInstace()

, [...]

, , mysql.

:

Class.forName ("com.mysql.jdbc.Driver").newInstance ();

:

import java.sql.Driver;
.... 
Driver driver = new com.mysql.jdbc.Driver()

, DriverManager doc, :

JDBC, Class.forName()

, DriverManager .

, :

.. DataSource, API JDBC 2.0, . DataSource .