Why can't i use class.forName(str) ?
Heys all i have this piece of code which is working fine:
*try {*
java.lang.Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
*} catch (java.lang.ClassNotFoundException e) {*
now the problem is that i was under the impression that i could use class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); but it wouldn't compile. does anyone know why is this so?
Class.forName() says "call the static method forName() that is defined in java.lang.Class". It returns a reference to an instance of java.lang.Class.
SomeClass.class is known as a class literal. It is not a member, not a field, not a method. It evaluates to a reference to an instance of java.lang.Class.
You cannot do class.something().
Edited by: jverd on Oct 26, 2010 9:46 AM
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for more details.Because using an import statement only tells the compiler about the driver. Class.forName() actually loads the driver when the program runs, which is what you want to happen.
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import java.io.*;
import java.util.jar.*;
import java.lang.*;
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ps:in Test.java's comments can run./**/.Please use code formatting tags in future! http://forum.java.sun.com/features.jsp#Formatting
It would be easy to find the problem yourself if you printed out a stack trace e.g.
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To create an object--regardless of whether it's your class or some other class--you could call newInstance on the Class object returned from Class.forName, BUT only if that class has a no-arg constructor that you want to call.
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Google for java reflection tutorial for more details.
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at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
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