es.ree.eemws.core.utils.file

Class FileUtil

java.lang.Object

es.ree.eemws.core.utils.file.FileUtil

public final class FileUtil
extends java.lang.Object

Utilities to read and write files.

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	createBackup(java.lang.String fullFileName) Creates a backup file.
static boolean	exists(java.lang.String fullFileName) Tests whether a file exists.
static java.lang.String	getFullPathOfResoruce(java.lang.String resourceName) Returns full path of a resource.
static java.lang.String	read(java.lang.String fullFileName) Reads a text file using the default platform char set.
static java.lang.String	read(java.lang.String fullFileName, java.nio.charset.Charset encoding) Reads a text file using the given char set.
static byte[]	readBinary(java.lang.String fullFileName) Reads a binary file.
static java.lang.String	readUTF8(java.lang.String fullFileName) Reads a text file in a UTF-8 Char set.
static void	write(java.lang.String fullFileName, byte[] content) Writes a binary file.
static void	write(java.lang.String fullFileName, java.lang.String content) Writes a text file using the default platform char set.
static void	write(java.lang.String fullFileName, java.lang.String content, java.nio.charset.Charset encoding) Writes a text file using the given char set.
static void	writeUTF8(java.lang.String fullFileName, java.lang.String content) Writes a text file using the default platform char set.

Methods inherited from class java.lang.Object

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

Method Detail

read

public static java.lang.String read(java.lang.String fullFileName)
                             throws java.io.IOException

Reads a text file using the default platform char set.

Parameters:

fullFileName - Path of the file.

Returns:

String with the content of the file.

Throws:

java.io.IOException - Exception with the error.

readUTF8

public static java.lang.String readUTF8(java.lang.String fullFileName)
                                 throws java.io.IOException

Reads a text file in a UTF-8 Char set.

Parameters:

fullFileName - Path of the file.

Returns:

String with the content of the file.

Throws:

java.io.IOException - Exception with the error.

read

public static java.lang.String read(java.lang.String fullFileName,
                    java.nio.charset.Charset encoding)
                             throws java.io.IOException

Reads a text file using the given char set.

Parameters:

fullFileName - Path of the file.

encoding - Char set

Returns:

String with the content of the file.

Throws:

java.io.IOException - Exception with the error.

readBinary

public static byte[] readBinary(java.lang.String fullFileName)
                         throws java.io.IOException

Reads a binary file.

Parameters:

fullFileName - Path of the file.

Returns:

Byte[] with the content of the file.

Throws:

java.io.IOException - Exception with the error.

write

public static void write(java.lang.String fullFileName,
         java.lang.String content)
                  throws java.io.IOException

Writes a text file using the default platform char set.

Parameters:

fullFileName - Path of the file.

content - String with the content of the file.

Throws:

java.io.IOException - Exception with the error.

write

public static void write(java.lang.String fullFileName,
         byte[] content)
                  throws java.io.IOException

Writes a binary file.

Parameters:

fullFileName - Path of the file.

content - Binary content of the file.

Throws:

java.io.IOException - Exception with the error.

writeUTF8

public static void writeUTF8(java.lang.String fullFileName,
             java.lang.String content)
                      throws java.io.IOException

Writes a text file using the default platform char set.

Parameters:

fullFileName - Path of the file.

content - String with the content of the file.

Throws:

java.io.IOException - Exception with the error.

write

public static void write(java.lang.String fullFileName,
         java.lang.String content,
         java.nio.charset.Charset encoding)
                  throws java.io.IOException

Writes a text file using the given char set.

Parameters:

fullFileName - Path of the file.

content - String with the content of the file.

encoding - Char set

Throws:

java.io.IOException - Exception with the error.

exists

public static boolean exists(java.lang.String fullFileName)

Tests whether a file exists.

Parameters:

fullFileName - Path of the file.

Returns:

true if the file exists; false if the file does not exist or its existence cannot be determined.

createBackup

public static java.lang.String createBackup(java.lang.String fullFileName)

Creates a backup file. Uses extension .bak_N. N is a number from 1 to the max version create.

Parameters:

fullFileName - Path of the file.

Returns:

Name of backup file. fullFileName if the file doesn't exist (no backup is made). null if it could not create a backup file.

getFullPathOfResoruce

public static java.lang.String getFullPathOfResoruce(java.lang.String resourceName)

Returns full path of a resource.

Parameters:

resourceName - Resource name

Returns:

Full path of the given resourceName.
null if the given resourceName is not found in the current thread's ClassLoader.