JDBC Oracle:obtenga el plan de explicación para la consulta

Usa esto:

oracle = ConnectionManager.getConnection(ConnectionManager.Test);
stmt = oracle.createStatement()
stmt.execute("explain plan for SELECT   1 from Dual");
rs = stmt.executeQuery("select plan_table_output from table(dbms_xplan.display())");
while (rs.next()) 
{
  System.out.println(rs.getString(1));
}