Java Reference
In-Depth Information
public
public class
class
FileStatus
FileStatus
{
public
public static
static
void
void
main
(
String
[]
argv
)
throws
throws
IOException
{
// Ensure that a filename (or something) was given in argv[0]
iif
(
argv
.
length
==
0
) {
System
.
err
.
println
(
"Usage: FileStatus filename"
);
System
.
exit
(
1
);
}
for
for
(
String a
:
argv
) {
status
(
a
);
}
}
public
public static
throws
IOException
{
System
.
out
.
println
(
"---"
+
fileName
+
"---"
);
static
void
void
status
(
String fileName
)
throws
// Construct a File object for the given file.
File f
=
new
new
File
(
fileName
);
// See if it actually exists
iif
(!
f
.
exists
()) {
System
.
out
.
println
(
"file not found"
);
System
.
out
.
println
();
// Blank line
return
return
;
}
// Print full name
System
.
out
.
println
(
"Canonical name "
+
f
.
getCanonicalPath
());
// Print parent directory if possible
String p
=
f
.
getParent
();
iif
(
p
!=
null
null
) {
System
.
out
.
println
(
"Parent directory: "
+
p
);
}
// Check if the file is readable
iif
(
f
.
canRead
()) {
System
.
out
.
println
(
"File is readable."
);
}
// Check if the file is writable
iif
(
f
.
canWrite
()) {
System
.
out
.
println
(
"File is writable."
);
}
// Report on the modification time.
Date d
=
new
new
Date
(
f
.
lastModified
());
System
.
out
.
println
(
"Last modified "
+
d
);
// See if file, directory, or other. If file, print size.
iif
(
f
.
isFile
()) {
