import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
public class Main {
public static void main(String[] argv) throws Exception {
String driverName = "oracle.jdbc.driver.OracleDriver";
Class.forName(driverName);
String serverName = "127.0.0.1";
String portNumber = "1521";
String sid = "mydatabase";
String url = "jdbc:oracle:thin:@" + serverName + ":" + portNumber + ":" + sid;
String username = "username";
String password = "password";
Connection connection = DriverManager.getConnection(url, username, password);
Statement stmt = connection.createStatement();
stmt.execute("CREATE TYPE object2 AS OBJECT(col_string2 VARCHAR(30), col_integer2 NUMBER)");
stmt.execute("CREATE TYPE object1 AS OBJECT(col_string1 VARCHAR(30), col_integer2 object2)");
stmt.execute("CREATE TABLE object1_table(col_integer NUMBER, col_object1 object1)");
stmt.execute("INSERT INTO object1_table VALUES(1, object1('str1', object2('obj2str1', 123)))");
}
}