View All num of num See all Photos Western Digital www.wdc.com Engaged Employer Overview Reviews Salaries Interviews Jobs Photos Benefits 327 Reviews 883 Salaries 138 Interviews 220 Jobs Follow Add Interview Follow Add Interview Interview Question Firmware Test Engineer Interview Irvine, CA Western Digital What is an abstract class? Tags: See more , See less 8 Answer Add Tags Answer Interview Answer 2 Answers ▲ 0 ▼ Is there anything such as an unabstract class? SS on Dec 10, 2012 ▲ 0 ▼ An abstract class is one that cannot be instantiated. If you declare an abstract class that you must implement a subclass which is instantiated. John on Nov 3, 2014 Interviews > Firmware Test Engineer > Western Digital Add Answers or Comments To comment on this, Sign In or Sign Up.