Question

Just to know. Which is the proper way of ordering import statements? Also which has more readability?

like,

• External classes (like java.util.List) and then internal package
  classes.
• Just in alphabetical order

Thanks in advance.

Answer 1

From the Java Programming Style Guidelines

The import statements must follow the package statement. import
statements should be sorted with the most fundamental packages first,
and grouped with associated packages together and one blank line
between groups.

….. …..

The import statement location is enforced by the Java
language. The sorting makes it simple to browse the list when there
are many imports, and it makes it easy to determine the dependiencies
of the present package The grouping reduce complexity by collapsing
related information into a common unit.

Refere the Java Tutorial link for more info.