Introduction to Programming

What is importing?

Importing allows us to specify a fully qualified class or interface name only once at the beginning of the .java file, before the class or interface declaration. The format of an import statement is as follows:

import <package>.<class or interface name>;

For example, look at the following:

import com.packt.javapath.ch04demo.MyApplication;

From now on, this class can be referred to in the code by its name, MyApplication, only. It is also possible to import all the classes or interfaces of a package using the wildcard character (*):

import com.packt.javapath.ch04demo.*;

Notice that the preceding import statement imports classes and interfaces of the subpackages of the com.packt.javapath.ch04demo package. If needed, each subpackage ...