Use the javax.swing.JFrame class to create three window methods. CompanyJFrame - is used to set up a windows object which has an appropriate corporate title. LargeCompanyJFrame - inherits from CompanyJFrame and sizes a large window. SmallCompanyJFrame - inherits from CompanyJFrame and sizes a smaller window. You should be able to use the LargeCompanyJFrame constructor and the SmallCompanyJFrame constructor to build large and small windows.

Write a regular expression that selects lines containing the html BR tag. The rules for this tag are that, like all html tags, it starts with < and ends with >. In between are the letters b and r in that order. These letters may appear in uppercase as well. For this exercise you must surround your solution with double quotes .