org.apache.tools.ant.taskdefs.JDBCTask 

 public   class  JDBCTestConnection  extends  org.apache.tools.ant.taskdefs.JDBCTask {
    
   public   static   void  main (String [] args)
  {
      JDBCTestConnection jdbcTest =  new  JDBCTestConnection();
      jdbcTest.setUserid("mike");
      jdbcTest.setPassword("12345");
      jdbcTest.setClasspath( new  Path( new  Project(), "C:\\classes12.jar"));
      jdbcTest.setDriver("oracle.jdbc.driver.OracleDriver");


      jdbcTest.setUrl("jdbc:oracle:thin:some_parameters"); // some_parameters - это я конечно не так пишу:))
      jdbcTest.getConnection();
  }

}

Exception in thread "main" java.lang.NullPointerException
	at org.apache.tools.ant.taskdefs.JDBCTask.getDriver(JDBCTask.java: 363 )
	at org.apache.tools.ant.taskdefs.JDBCTask.getConnection(JDBCTask.java: 319 )
	at ru.test.JDBCTestConnection.main(JDBCTestConnection.java: 33 )
	at sun.reflect.NativeMethodAccessorImpl.invoke0( Native  Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 39 )
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 25 )
	at java.lang.reflect.Method.invoke(Method.java: 585 )
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java: 90 )

 jdbcTest.setClasspath( new  Path( new  Project(), "C:\\classes12.jar"));

 public   static   void  main (String [] args)
  {
      JDBCTestConnection jdbcTest =  new  JDBCTestConnection();
      jdbcTest.setProject( new  Project());
      jdbcTest.setDriver("oracle.jdbc.driver.OracleDriver");
      jdbcTest.setUserid("mike");
      jdbcTest.setPassword("12345");
      jdbcTest.createClasspath().setLocation(  new  File("C:\\classes12.jar"));
jdbcTest.setUrl("jdbc:oracle:thin:@some_params");
    }