import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;


public class Test16 {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
         
        Class.forName("oracle.jdbc.driver.OracleDriver");
        
        String url="jdbc:oracle:thin:@localhost:1521:orcl";
        
        Connection con=DriverManager.getConnection(url,"sa","123");
        
        
         }
}

Exception in thread "main" java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
    at (URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at (URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:169)
    at Test16.main(Test16.java:9)

没有导入oracle驱动包吧？

[ 本帖最后由 Apopo 于 2010-11-21 23:51 编辑 ]

那是怎么导入的

如果是web project直接将oracle驱动包拷贝到lib文件夹下。
如果是java project在src下新建一个lib文件再拷贝进去，然后build path.