The declared package "" does not match the expected package "jdbc" : 
import java.sql.*; //The declared package "" does not match the expected package "jdbc" 

class Oraclecon{  

public static void main(String args[]){  

try{  

//step1 load the driver class  

Class.forName("oracle.jdbc.driver.OracleDriver");  
  
//step2 create  the connection object  

Connection con=DriverManager.getConnection(  

"jdbc:oracle:thin:@localhost:1521:xe","system","system");  
  
//step3 create the statement object  

Statement stmt=con.createStatement();  
  
//step4 execute query  

ResultSet rs=stmt.executeQuery("select * from JNTURESULTS");  

while(rs.next())  

System.out.println(rs.getInt(1)+"  "+rs.getString(2)+"  "+rs.getString(3));  
  
//step5 close the connection object  

con.close();  
  

}
catch(Exception e){ System.out.println(e);}  
  
}  
}  