package jdbc_test;
import java.sql.*;
import java.util.Scanner;
/**
 *
 * @author hp-admin
 */
public class JDBC_Test
  {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
      {
        // TODO code application logic here
        String tableName=null;
        Scanner input = new Scanner(System.in);
        int id=8;
          System.out.println("Enter the table name: ");
          tableName = input.nextLine();
        try
        {
            //step1 load the driver class
//            Class.forName("oracle.jdbc.driver.OracleDriver");


            Connection con = DriverManager.getConnection(
                    "jdbc:oracle:thin:@localhost:1521:oracle12c", "system", "oracle12c");


            Statement stmt = con.createStatement();

//            ResultSet rs = stmt.executeQuery("select * from "+tableName+"where id='"+id+"'");
            ResultSet rs = stmt.executeQuery("select * from "+tableName+"where id='"+id+"'");
            System.out.printf("%15s%15s","Name","ID");
            while (rs.next())
            {
//                System.out.println(rs.getString(1) + "  " + rs.getString(2));
//                System.out.printf("n%15s%15S",rs.getString("name"),rs.getString("id"));
                System.out.printf("n%15s",rs.getString("name"));//,rs.getString("id"));
            }


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



Enter the table name:
t
java.sql.SQLSyntaxErrorException: ORA-00933: SQL command not properly ended