initialize various fields in constructor.
initialize various fields in constructor.

Change-Id: Ib2165121786353062a52e6dd65cca6dab8584e60

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core