22.24
java.io.File
THE PACKAGE JAVA.IO
The file system actually contains a file specified by the path of the
File
object.
The file so specified can be read.
22.24.18
public boolean canWrite() throws SecurityException
First, if there is a security manager, its
checkWrite
 method ( 20.17.21) is called
with the path represented by this
File
 object as its argument.
The result is
true
 if and only if both of the following are true:
The file system actually contains a file specified by the path of the
File
object.
The file so specified can be written.
22.24.19
public boolean isFile() throws SecurityException
First, if there is a security manager, its
checkRead
 method ( 20.17.19) is called
with the path represented by this
File
 object as its argument.
The result is
true
 if and only if both of the following are true:
The file system actually contains a file specified by the path of the
File
object.
The file so specified is a data file rather than a directory.
22.24.20
public boolean isDirectory() throws SecurityException
First, if there is a security manager, its
checkRead
 method ( 20.17.19) is called
with the path represented by this
File
 object as its argument.
The result is
true
 if and only if both of the following are true:
The file system actually contains a file specified by the path of the
File
object.
The file so specified is a directory rather than a data file.
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