1. A processor-implemented method of creating a portal application, the processor-implemented method comprising: a processor receiving multiple rules for portlets and views of a portal application; the processor generating common business user interface components that comply with the multiple rules, wherein the multiple rules define how the common business user interface components are permitted to be broken apart into multiple sub-components, wherein the common business user interface components consists of a container category, a form category, and a button category, wherein the container category contains a twisty and a tab, wherein the form category contains a data input form, a data display form, a data display table, and a double header data display table, and wherein the button category contains top buttons and bottom buttons; the processor classifying the common business user interface components into user interface component categories; the processor creating a library of implemented and classified common business user interface components, wherein the library stores the implemented common business user interface components according to the user interface component categories; and providing the library to multiple developers to design the views of the portlets, wherein the views will have a similar look and feel within the portal application.