import java.sql.*;
 
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection("jdbc:oracle:oci:@orcl", "scott", "tiger");
stmt = conn.createStatement();
rs = stmt.executeQuery("SELECT 'Hello, JDBC Type2 World!' AS Message FROM DUAL");
while ( rs.next() ) {
    System.out.println( rs.getString(1) );
}
rs.close();
stmt.close();
conn.close();