jdbc Connectivity in java

package jdbcConn;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class jdbcMain {

    public static void main(String[] args) {

        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");

            Connection con = DriverManager.getConnection(
                    "jdbc:oracle:thin:@192.168.1.30:1521:xe", "employee",
                    "aavanor");

            Statement stmt = con.createStatement();
           
            stmt.executeUpdate("CREATE TABLE REG (id INTEGER not NULL,  first VARCHAR(255) )");
            stmt.executeUpdate("INSERT INTO REG VALUES (3, 'ss')");
            stmt.executeUpdate("UPDATE  REG SET first = 'anna' WHERE id in (1)");
            stmt.executeQuery("DELETE FROM REG WHERE id = 2");

            ResultSet rs = stmt.executeQuery("select * from REG");
            while (rs.next())
                System.out.println(rs.getInt(1) + "  " + rs.getString(2));
            con.close();
        } catch (Exception e) {
            System.out.println(e);
        }
    }
}