Develop code that declares classes (including abstract and all forms of nested classes), interfaces, and enums, and includes the appropriate use of package and import statements (including static imports).
Inner classes (including static nested classes) appear throughout the exam. Although there are no official exam objetives specifically about inner classes, Objetive 1.1 includes inner (a.k.a. nested) classes. More important, the code used to represent questions on virtually any topic on the exam can involve inner classes.
Bear Bibeault wrote:== tests for identity. The .equals() method tests for equality.
Don't worry, 100% of novice Java developers makes this mistake at the start.