The present invention discloses a system, method and program code product for efficient component-based application development. Presentation code of a container component is generated by an integrated-components code generator (ICCG), which uses the class objects of component code generators (CCGs) as subcomponents. The CCGs, as standalone components, can generate the presentation code of the subcomponents by their code-generating method (CGM) during execution. The ICCG assemble and integrate the subcomponents' presentation code in run time and fill in the code necessary to establish communication between any two of subcomponents in the resultant web application code.