Package me.saro.commons

Class Files

java.lang.Object

me.saro.commons.Files

public class Files
extends java.lang.Object

file util

Since:

0.1

Author:

PARK Yong Seo

Method Summary

Modifier and Type	Method	Description
static java.util.function.Predicate<java.io.File>	attributesFilter(ThrowablePredicate<java.nio.file.attribute.BasicFileAttributes> filter)	convert BasicFileAttributes to FileFilter ex) // delete created before 24 hour file in /testpath long before24hour = DateFormat.now().addHours(-24).getTimeInMillis(); Files.streamFiles("/testpath") .filter(Files.attributesFilter(attr -> attr.creationTime().toMillis() < before24hour)) .forEach(File::delete);
static void	createFile(java.io.File file, boolean overwrite, java.io.InputStream inputStream)	create file use the inputstream
static void	createFile(java.io.File file, boolean overwrite, java.lang.String value, java.lang.String charset)	create file use the string
static <T> T	lineReader(java.io.File file, java.lang.String charset, ThrowableFunction<java.util.stream.Stream<java.lang.String>,T> lineReader)	read line in the file
static <T> T	lineReader(java.lang.String file, java.lang.String charset, ThrowableFunction<java.util.stream.Stream<java.lang.String>,T> lineReader)	read line in the file
static java.util.stream.Stream<java.io.File>	listFilesStream(java.io.File directory)	get files stream by directory
static java.util.stream.Stream<java.io.File>	listFilesStream(java.lang.String directory)	get files stream by directory
static java.nio.file.attribute.BasicFileAttributes	toBasicFileAttributes(java.io.File file)	get file infomation
static java.lang.String	toFileExt(java.io.File filename)	to File ext (only lowercase)
static java.lang.String	toFileExt(java.lang.String filename)	to File ext (only lowercase)
static boolean	validFileExt(java.io.File filename, java.lang.String... fileExts)	valid check for the file ext
static boolean	validFileExt(java.lang.String filename, java.lang.String... fileExts)	valid check for the file ext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

createFile

public static void createFile(java.io.File file,
                              boolean overwrite,
                              java.io.InputStream inputStream)
                       throws java.lang.Exception

create file use the inputstream

Parameters:

file -

overwrite -

inputStream -

Throws:

java.lang.Exception

createFile

public static void createFile(java.io.File file,
                              boolean overwrite,
                              java.lang.String value,
                              java.lang.String charset)
                       throws java.lang.Exception

create file use the string

Parameters:

file -

overwrite -

value -

charset -

Throws:

java.lang.Exception

listFilesStream

public static java.util.stream.Stream<java.io.File> listFilesStream(java.io.File directory)

get files stream by directory

Parameters:

directory -

Returns:

listFilesStream

public static java.util.stream.Stream<java.io.File> listFilesStream(java.lang.String directory)

get files stream by directory

Parameters:

directory -

Returns:

lineReader

public static <T> T lineReader(java.io.File file,
                               java.lang.String charset,
                               ThrowableFunction<java.util.stream.Stream<java.lang.String>,T> lineReader)
                        throws java.lang.Exception

read line in the file

Parameters:

file -

charset -

lineReader -

Returns:

Throws:

java.lang.Exception

lineReader

public static <T> T lineReader(java.lang.String file,
                               java.lang.String charset,
                               ThrowableFunction<java.util.stream.Stream<java.lang.String>,T> lineReader)
                        throws java.lang.Exception

read line in the file

Parameters:

file -

charset -

lineReader -

Returns:

Throws:

java.lang.Exception

toFileExt

public static java.lang.String toFileExt(java.io.File filename)

to File ext (only lowercase)

Parameters:

filename -

Returns:

ex) "gif", "png", "jpg", "zip", "exe", ""

toFileExt

public static java.lang.String toFileExt(java.lang.String filename)

to File ext (only lowercase)

Parameters:

filename -

Returns:

ex) "gif", "png", "jpg", "zip", "exe", ""

validFileExt

public static boolean validFileExt(java.io.File filename,
                                   java.lang.String... fileExts)

valid check for the file ext

Parameters:

filename -

fileExts - only lowercase ex) "gif", "png", "jpg", "zip", "exe", ""

Returns:

validFileExt

public static boolean validFileExt(java.lang.String filename,
                                   java.lang.String... fileExts)

valid check for the file ext

Parameters:

filename -

fileExts - only lowercase ex) "gif", "png", "jpg", "zip", "exe", ""

Returns:

toBasicFileAttributes

public static java.nio.file.attribute.BasicFileAttributes toBasicFileAttributes(java.io.File file)
                                                                         throws java.io.IOException

get file infomation

Parameters:

file -

Returns:

Throws:

java.io.IOException

attributesFilter

public static java.util.function.Predicate<java.io.File> attributesFilter(ThrowablePredicate<java.nio.file.attribute.BasicFileAttributes> filter)

convert BasicFileAttributes to FileFilter

ex) // delete created before 24 hour file in /testpath
long before24hour = DateFormat.now().addHours(-24).getTimeInMillis();
Files.streamFiles("/testpath")
.filter(Files.attributesFilter(attr -> attr.creationTime().toMillis() < before24hour))
.forEach(File::delete);

Parameters:

file -

filter -

Returns: