How do I touch a folder with current time using set last modified date & time?
10
I'm trying to update the last modified date of a specific folder, here's what I've got:
public void touchFolder(){
File folderToTest = new File("C:\Temp");
SimpleDateFormat dateFormatUtc = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
dateFormatUtc.setTimeZone(TimeZone.getTimeZone("UTC"));
String newTime = dateFormatUtc.format(new Date());
folderToTest.setLastModified(Long.parseLong(newTime));
}
I am just putting this code in a test case so don't worry about calling this method etc.
I'm getting errors with the parsing that date format as a long, what's the format used in setting the last modified date & time?
java
edited Dec 19 '18 at 15:25
Karol Dowbecki
16.4k82849
asked Dec 19 '18 at 15:19
Tiffany
534
add a comment |
10
I'm trying to update the last modified date of a specific folder, here's what I've got:
public void touchFolder(){
File folderToTest = new File("C:\Temp");
SimpleDateFormat dateFormatUtc = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
dateFormatUtc.setTimeZone(TimeZone.getTimeZone("UTC"));
String newTime = dateFormatUtc.format(new Date());
folderToTest.setLastModified(Long.parseLong(newTime));
}
I am just putting this code in a test case so don't worry about calling this method etc.
I'm getting errors with the parsing that date format as a long, what's the format used in setting the last modified date & time?
java
edited Dec 19 '18 at 15:25
Karol Dowbecki
16.4k82849
asked Dec 19 '18 at 15:19
Tiffany
534
1
Instead of formatting the date to some string and parsing that to a long (which wouldn't work because2018-12-19 ...is not a long) just useSystem.currentTimeMillis()to get the current time as a long.
– Thomas
Dec 19 '18 at 15:23
2
Consider usingjava.nioandjava.timefor operations concerning time and the file system.
– deHaar
Dec 19 '18 at 15:24
last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970).File doc
– TongChen
Dec 19 '18 at 15:26
add a comment |
10
10
10
I'm trying to update the last modified date of a specific folder, here's what I've got:
public void touchFolder(){
File folderToTest = new File("C:\Temp");
SimpleDateFormat dateFormatUtc = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
dateFormatUtc.setTimeZone(TimeZone.getTimeZone("UTC"));
String newTime = dateFormatUtc.format(new Date());
folderToTest.setLastModified(Long.parseLong(newTime));
}
I am just putting this code in a test case so don't worry about calling this method etc.
I'm getting errors with the parsing that date format as a long, what's the format used in setting the last modified date & time?
java
edited Dec 19 '18 at 15:25
Karol Dowbecki
16.4k82849
asked Dec 19 '18 at 15:19
Tiffany
534
I'm trying to update the last modified date of a specific folder, here's what I've got:
public void touchFolder(){
File folderToTest = new File("C:\Temp");
SimpleDateFormat dateFormatUtc = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
dateFormatUtc.setTimeZone(TimeZone.getTimeZone("UTC"));
String newTime = dateFormatUtc.format(new Date());
folderToTest.setLastModified(Long.parseLong(newTime));
}
I am just putting this code in a test case so don't worry about calling this method etc.
I'm getting errors with the parsing that date format as a long, what's the format used in setting the last modified date & time?
java
java
edited Dec 19 '18 at 15:25
Karol Dowbecki
16.4k82849
asked Dec 19 '18 at 15:19
Tiffany
534
edited Dec 19 '18 at 15:25
Karol Dowbecki
16.4k82849
asked Dec 19 '18 at 15:19
Tiffany
534
edited Dec 19 '18 at 15:25
Karol Dowbecki
16.4k82849
edited Dec 19 '18 at 15:25
Karol Dowbecki
16.4k82849
edited Dec 19 '18 at 15:25
Karol Dowbecki
16.4k82849
16.4k82849
asked Dec 19 '18 at 15:19
Tiffany
534
asked Dec 19 '18 at 15:19
Tiffany
534
asked Dec 19 '18 at 15:19
Tiffany
534
534
1
Instead of formatting the date to some string and parsing that to a long (which wouldn't work because2018-12-19 ...is not a long) just useSystem.currentTimeMillis()to get the current time as a long.
– Thomas
Dec 19 '18 at 15:23
2
Consider usingjava.nioandjava.timefor operations concerning time and the file system.
– deHaar
Dec 19 '18 at 15:24
last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970).File doc
– TongChen
Dec 19 '18 at 15:26
add a comment |
1
Instead of formatting the date to some string and parsing that to a long (which wouldn't work because2018-12-19 ...is not a long) just useSystem.currentTimeMillis()to get the current time as a long.
– Thomas
Dec 19 '18 at 15:23
2
Consider usingjava.nioandjava.timefor operations concerning time and the file system.
– deHaar
Dec 19 '18 at 15:24
last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970).File doc
– TongChen
Dec 19 '18 at 15:26
1
1
Instead of formatting the date to some string and parsing that to a long (which wouldn't work because
2018-12-19 ... is not a long) just use System.currentTimeMillis() to get the current time as a long.– Thomas
Dec 19 '18 at 15:23
Instead of formatting the date to some string and parsing that to a long (which wouldn't work because
2018-12-19 ... is not a long) just use System.currentTimeMillis() to get the current time as a long.– Thomas
Dec 19 '18 at 15:23
2
2
Consider using
java.nio and java.time for operations concerning time and the file system.– deHaar
Dec 19 '18 at 15:24
Consider using
java.nio and java.time for operations concerning time and the file system.– deHaar
Dec 19 '18 at 15:24
last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970).File doc
– TongChen
Dec 19 '18 at 15:26
last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970).File doc
– TongChen
Dec 19 '18 at 15:26
add a comment |
3 Answers
3
active
oldest
votes
9
This is an example from the documentation, using java.nio.file.Files:
Path path = ...
FileTime now = FileTime.fromMillis(System.currentTimeMillis());
Files.setLastModifiedTime(path, now);
answered Dec 19 '18 at 15:34
Radiodef
31.7k126596
FileTimecan also be done asFileTime.from(Instance.now());
– locus2k
Dec 19 '18 at 15:42
My path was a string so I used this:Path path = Paths.get("path\of\directory");Worked beautifully!
– Tiffany
Dec 19 '18 at 15:47
Tiffany why you accepted this answer and not the ones we added before this one with @Karol Dowbecki?
– aBnormaLz
Dec 19 '18 at 16:03
@aBnormaLz All are great answers but I am only able to accept one. This one has clear structure with documentation and is quick to implement. Thanks for all your help.
– Tiffany
Dec 19 '18 at 17:06
add a comment |
6
I think you should just do folderToTest.setLastModified(System.currentTimeMillis());
answered Dec 19 '18 at 15:22
aBnormaLz
352212
add a comment |
5
In your code newTime is a formatted date 2018-12-19 15:21:31 which can't be parsed to Long. What you want to do is supply the time in milliseconds e.g.:
Date d = new Date();
file.setLastModified(d.getTime());
As per File.setLastModified() method javadoc:
time - The new last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970)
answered Dec 19 '18 at 15:22
Karol Dowbecki
16.4k82849
You don't need to instantiate anew Date()for this. you can just useSystem.currentTimeMillis()
– aBnormaLz
Dec 19 '18 at 15:25
1
@aBnormaLz true, it's just an example of using arbitraryDateobject instead of current time in case OP has a precise date in mind.
– Karol Dowbecki
Dec 19 '18 at 15:26
Oh that's true :)
– aBnormaLz
Dec 19 '18 at 15:27
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
9
This is an example from the documentation, using java.nio.file.Files:
Path path = ...
FileTime now = FileTime.fromMillis(System.currentTimeMillis());
Files.setLastModifiedTime(path, now);
answered Dec 19 '18 at 15:34
Radiodef
31.7k126596
FileTimecan also be done asFileTime.from(Instance.now());
– locus2k
Dec 19 '18 at 15:42
My path was a string so I used this:Path path = Paths.get("path\of\directory");Worked beautifully!
– Tiffany
Dec 19 '18 at 15:47
Tiffany why you accepted this answer and not the ones we added before this one with @Karol Dowbecki?
– aBnormaLz
Dec 19 '18 at 16:03
@aBnormaLz All are great answers but I am only able to accept one. This one has clear structure with documentation and is quick to implement. Thanks for all your help.
– Tiffany
Dec 19 '18 at 17:06
add a comment |
9
This is an example from the documentation, using java.nio.file.Files:
Path path = ...
FileTime now = FileTime.fromMillis(System.currentTimeMillis());
Files.setLastModifiedTime(path, now);
answered Dec 19 '18 at 15:34
Radiodef
31.7k126596
FileTimecan also be done asFileTime.from(Instance.now());
– locus2k
Dec 19 '18 at 15:42
My path was a string so I used this:Path path = Paths.get("path\of\directory");Worked beautifully!
– Tiffany
Dec 19 '18 at 15:47
Tiffany why you accepted this answer and not the ones we added before this one with @Karol Dowbecki?
– aBnormaLz
Dec 19 '18 at 16:03
@aBnormaLz All are great answers but I am only able to accept one. This one has clear structure with documentation and is quick to implement. Thanks for all your help.
– Tiffany
Dec 19 '18 at 17:06
add a comment |
9
9
9
This is an example from the documentation, using java.nio.file.Files:
Path path = ...
FileTime now = FileTime.fromMillis(System.currentTimeMillis());
Files.setLastModifiedTime(path, now);
answered Dec 19 '18 at 15:34
Radiodef
31.7k126596
This is an example from the documentation, using java.nio.file.Files:
Path path = ...
FileTime now = FileTime.fromMillis(System.currentTimeMillis());
Files.setLastModifiedTime(path, now);
answered Dec 19 '18 at 15:34
Radiodef
31.7k126596
answered Dec 19 '18 at 15:34
Radiodef
31.7k126596
answered Dec 19 '18 at 15:34
Radiodef
31.7k126596
answered Dec 19 '18 at 15:34
Radiodef
31.7k126596
31.7k126596
FileTimecan also be done asFileTime.from(Instance.now());
– locus2k
Dec 19 '18 at 15:42
My path was a string so I used this:Path path = Paths.get("path\of\directory");Worked beautifully!
– Tiffany
Dec 19 '18 at 15:47
Tiffany why you accepted this answer and not the ones we added before this one with @Karol Dowbecki?
– aBnormaLz
Dec 19 '18 at 16:03
@aBnormaLz All are great answers but I am only able to accept one. This one has clear structure with documentation and is quick to implement. Thanks for all your help.
– Tiffany
Dec 19 '18 at 17:06
add a comment |
FileTimecan also be done asFileTime.from(Instance.now());
– locus2k
Dec 19 '18 at 15:42
My path was a string so I used this:Path path = Paths.get("path\of\directory");Worked beautifully!
– Tiffany
Dec 19 '18 at 15:47
Tiffany why you accepted this answer and not the ones we added before this one with @Karol Dowbecki?
– aBnormaLz
Dec 19 '18 at 16:03
@aBnormaLz All are great answers but I am only able to accept one. This one has clear structure with documentation and is quick to implement. Thanks for all your help.
– Tiffany
Dec 19 '18 at 17:06
FileTime can also be done as FileTime.from(Instance.now());– locus2k
Dec 19 '18 at 15:42
FileTime can also be done as FileTime.from(Instance.now());– locus2k
Dec 19 '18 at 15:42
My path was a string so I used this:
Path path = Paths.get("path\of\directory"); Worked beautifully!– Tiffany
Dec 19 '18 at 15:47
My path was a string so I used this:
Path path = Paths.get("path\of\directory"); Worked beautifully!– Tiffany
Dec 19 '18 at 15:47
Tiffany why you accepted this answer and not the ones we added before this one with @Karol Dowbecki?
– aBnormaLz
Dec 19 '18 at 16:03
Tiffany why you accepted this answer and not the ones we added before this one with @Karol Dowbecki?
– aBnormaLz
Dec 19 '18 at 16:03
@aBnormaLz All are great answers but I am only able to accept one. This one has clear structure with documentation and is quick to implement. Thanks for all your help.
– Tiffany
Dec 19 '18 at 17:06
@aBnormaLz All are great answers but I am only able to accept one. This one has clear structure with documentation and is quick to implement. Thanks for all your help.
– Tiffany
Dec 19 '18 at 17:06
add a comment |
6
I think you should just do folderToTest.setLastModified(System.currentTimeMillis());
answered Dec 19 '18 at 15:22
aBnormaLz
352212
add a comment |
6
I think you should just do folderToTest.setLastModified(System.currentTimeMillis());
answered Dec 19 '18 at 15:22
aBnormaLz
352212
add a comment |
6
6
6
I think you should just do folderToTest.setLastModified(System.currentTimeMillis());
answered Dec 19 '18 at 15:22
aBnormaLz
352212
I think you should just do folderToTest.setLastModified(System.currentTimeMillis());
answered Dec 19 '18 at 15:22
aBnormaLz
352212
answered Dec 19 '18 at 15:22
aBnormaLz
352212
answered Dec 19 '18 at 15:22
aBnormaLz
352212
answered Dec 19 '18 at 15:22
aBnormaLz
352212
352212
add a comment |
add a comment |
5
In your code newTime is a formatted date 2018-12-19 15:21:31 which can't be parsed to Long. What you want to do is supply the time in milliseconds e.g.:
Date d = new Date();
file.setLastModified(d.getTime());
As per File.setLastModified() method javadoc:
time - The new last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970)
answered Dec 19 '18 at 15:22
Karol Dowbecki
16.4k82849
You don't need to instantiate anew Date()for this. you can just useSystem.currentTimeMillis()
– aBnormaLz
Dec 19 '18 at 15:25
1
@aBnormaLz true, it's just an example of using arbitraryDateobject instead of current time in case OP has a precise date in mind.
– Karol Dowbecki
Dec 19 '18 at 15:26
Oh that's true :)
– aBnormaLz
Dec 19 '18 at 15:27
add a comment |
5
In your code newTime is a formatted date 2018-12-19 15:21:31 which can't be parsed to Long. What you want to do is supply the time in milliseconds e.g.:
Date d = new Date();
file.setLastModified(d.getTime());
As per File.setLastModified() method javadoc:
time - The new last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970)
answered Dec 19 '18 at 15:22
Karol Dowbecki
16.4k82849
You don't need to instantiate anew Date()for this. you can just useSystem.currentTimeMillis()
– aBnormaLz
Dec 19 '18 at 15:25
1
@aBnormaLz true, it's just an example of using arbitraryDateobject instead of current time in case OP has a precise date in mind.
– Karol Dowbecki
Dec 19 '18 at 15:26
Oh that's true :)
– aBnormaLz
Dec 19 '18 at 15:27
add a comment |
5
5
5
In your code newTime is a formatted date 2018-12-19 15:21:31 which can't be parsed to Long. What you want to do is supply the time in milliseconds e.g.:
Date d = new Date();
file.setLastModified(d.getTime());
As per File.setLastModified() method javadoc:
time - The new last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970)
answered Dec 19 '18 at 15:22
Karol Dowbecki
16.4k82849
In your code newTime is a formatted date 2018-12-19 15:21:31 which can't be parsed to Long. What you want to do is supply the time in milliseconds e.g.:
Date d = new Date();
file.setLastModified(d.getTime());
As per File.setLastModified() method javadoc:
time - The new last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970)
answered Dec 19 '18 at 15:22
Karol Dowbecki
16.4k82849
answered Dec 19 '18 at 15:22
Karol Dowbecki
16.4k82849
answered Dec 19 '18 at 15:22
Karol Dowbecki
16.4k82849
answered Dec 19 '18 at 15:22
Karol Dowbecki
16.4k82849
16.4k82849
You don't need to instantiate anew Date()for this. you can just useSystem.currentTimeMillis()
– aBnormaLz
Dec 19 '18 at 15:25
1
@aBnormaLz true, it's just an example of using arbitraryDateobject instead of current time in case OP has a precise date in mind.
– Karol Dowbecki
Dec 19 '18 at 15:26
Oh that's true :)
– aBnormaLz
Dec 19 '18 at 15:27
add a comment |
You don't need to instantiate anew Date()for this. you can just useSystem.currentTimeMillis()
– aBnormaLz
Dec 19 '18 at 15:25
1
@aBnormaLz true, it's just an example of using arbitraryDateobject instead of current time in case OP has a precise date in mind.
– Karol Dowbecki
Dec 19 '18 at 15:26
Oh that's true :)
– aBnormaLz
Dec 19 '18 at 15:27
You don't need to instantiate a
new Date() for this. you can just use System.currentTimeMillis()– aBnormaLz
Dec 19 '18 at 15:25
You don't need to instantiate a
new Date() for this. you can just use System.currentTimeMillis()– aBnormaLz
Dec 19 '18 at 15:25
1
1
@aBnormaLz true, it's just an example of using arbitrary
Date object instead of current time in case OP has a precise date in mind.– Karol Dowbecki
Dec 19 '18 at 15:26
@aBnormaLz true, it's just an example of using arbitrary
Date object instead of current time in case OP has a precise date in mind.– Karol Dowbecki
Dec 19 '18 at 15:26
Oh that's true :)
– aBnormaLz
Dec 19 '18 at 15:27
Oh that's true :)
– aBnormaLz
Dec 19 '18 at 15:27
add a comment |
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1
Instead of formatting the date to some string and parsing that to a long (which wouldn't work because
2018-12-19 ...is not a long) just useSystem.currentTimeMillis()to get the current time as a long.– Thomas
Dec 19 '18 at 15:23
2
Consider using
java.nioandjava.timefor operations concerning time and the file system.– deHaar
Dec 19 '18 at 15:24
last-modified time, measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970).File doc
– TongChen
Dec 19 '18 at 15:26