Probléme Pilote JDBC avec base oracle AIDER MOI

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

public class TPCDS { 


    public static void main(String[] args)throws SQLException  { 
  
System.out.println("-------- Oracle JDBC Connection Testing ------"); 
  
  try { 
  
   Class.forName("oracle.jdbc.driver.OracleDriver"); 
  
  } catch (ClassNotFoundException e) { 
  
   System.out.println("Where is your Oracle JDBC Driver?"); 
   e.printStackTrace(); 
   return; 
  
  }        
         
        System.out.println("Oracle JDBC Driver Registered!"); 
  
  Connection connection = null; 
        // PARTI CONXION 
        
                try { 
    connection = DriverManager.getConnection("jdbc:oracle:thin:@//127.0.0.1:8080:TPCDS","system","user"); 
   } catch (SQLException e) { 
  
   System.out.println("Connection Failed! Check output console"); 
   e.printStackTrace(); 
   return; 
  
  } 
       //test ; suiv          
                if (connection != null) { 
   System.out.println("You made it, take control your database now!"); 
  } else { 
   System.out.println("Failed to make connection!"); 
  } 
///fin 
    } 
} 

run: 
-------- Oracle JDBC Connection Testing ------ 
Oracle JDBC Driver Registered! 
Connection Failed! Check output console 
java.sql.SQLException: Exception d'E/S: The Network Adapter could not establish the connection 
 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112) 
 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146) 
 at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255) 
 at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387) 
 at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:414) 
 at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165) 
 at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35) 
 at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801) 
 at java.sql.DriverManager.getConnection(DriverManager.java:579) 
 at java.sql.DriverManager.getConnection(DriverManager.java:221) 
 at TPCDS.main(TPCDS.java:30) 
BUILD SUCCESSFUL (total time: 4 seconds)