Android Treat Acronyms as Words

Treat acronyms and abbreviations as words in naming variables, methods, and classes. The names are much more readable:

Good Bad
XmlHttpRequest XMLHTTPRequest
getCustomerId getCustomerID
class Html class HTML
String url String URL
long id long ID

Both the JDK and the Android code bases are very inconsistent with regards to acronyms, therefore, it is virtually impossible to be consistent with the code around you. Bite the bullet, and treat acronyms as words.

For further justifications of this style rule, see Effective Java Item 38 and Java Puzzlers Number 68.

Source: http://source.android.com/source/code-style.html