The package and import Statements
Figure 3.9 shows the package
statement and import
statements in MainActivity.java
. The package
statement in line 3 was inserted when you created the project. When you open a Java file in the IDE, the import
statements are collapsed—one is displayed with a to its left. You can click the to see the complete list of import
statements.
Lines 5–14 import
the classes and interfaces the app uses:
• Class NumberFormat
of package java.text
(line 5) provides numeric formatting capabilities, such as locale-specific currency ...
Get Android™ How to Program, Second Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.