Java Reference
In-Depth Information
package java.io.file-Summary of the most important classes and interfaces
class
Paths
The
Paths
class provides
get
methods to return concrete instances of the
Path
interface.
class
Files
Files
is a class that provides static methods to query attributes of files and
directories (folders), as well as to manipulate the file system—e.g., creating
directories and changing file permissions. It also includes methods for opening
files, such as
newBufferedReader
.
K.4
The
java.net
package
The
java.net
package contains classes and interfaces supporting networked applications.
Most of these are outside the scope of this topic.
package java.net-Summary of the most important classes
class
URL
The
URL
class represents a Uniform Resource Locator. In other words, it provides
a way to describe the location of something on the Internet. In fact, it can also
be used to describe the location of something on a local file system. We have in-
cluded it here because classes from the
java.io
and
javax.swing
packages
often use
URL
objects. Key methods are
getContent
,
getFile
,
getHost
,
getPath
, and
openStream
.
K.5
Other important packages
Other important packages are:
java.awt
java.awt.event
javax.swing
javax.swing.event
These are used extensively when writing graphical user interfaces (GUIs), and they contain
many useful classes that a GUI programmer should become familiar with.
