Oracle java connection
import java.sql.*;

public class SimpleOraJava {
    public static void main(String[] args) throws SQLException, ClassNotFoundException {
        // TODO Auto-generated method stub
        DriverManager.registerDriver(new Oracle.jdbc.driver.OracleDriver());
        String serverName="10.20.228.67";
        String user="root";
        String password="root";
        String SID="abc";
        String URL="jdbc:oracle:thin:@"+serverName+":"+1520+":"+SID;
        Connection conn=DriverManager.getConnection(URL, user, password);
        String SQL="Select employeename from employee";
        Statement stat=conn.createStatement();
        ResultSet rs=stat.executeQuery(SQL);
        while (rs.next()){
        System.out.println(rs.getInt(1));

    }
stat.close();
conn.close();
}
}

DriverManager.registerDriver(new Oracle.jdbc.driver.OracleDriver());

DriverManager.registerDriver(new Oracle.jdbc.driver.OracleDriver());

import java.sql.*;
import oracle.jdbc.driver.*;

public class myjdbcapp
{
  public static void main(String[] args) throws SQLException
  {
    DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
    String url = "jdbc:oracle:thin:@server:port:orcl";
    String userName = "scott";
    String password = "tiger";
    Connection conn = DriverManager.getConnection (url, userName, password);
    OracleCallableStatement myprocst  = (OracleCallableStatement)
    conn.prepareCall ("begin myproc(?); end;");
  // ...
  }

}