org.ow2.jonas.launcher.jonas.util
Class IOUtils

java.lang.Object
  org.ow2.jonas.launcher.jonas.util.IOUtils

public final class IOUtils
extends Object

IO utilities.

Author:

Guillaume Sauthier

Method Summary

static boolean	deleteDir(File dir) Recursively delete a directory.
static boolean	exists(String filename) Checks if the file exists.
static Properties	getPropertiesFromClass(String resource, Class<?> clazz)
static Properties	getPropertiesFromFile(File filename)
static File	getSystemFile(File base, String relative) Return a OS valid File.
static String	getSystemPath(File base, String relative) Return a OS valid path.
static Properties	loadPropertiesFromStream(InputStream is) Create a Properties from the given InputStream.
static Map<String,String>	props2Map(Properties p) Convert the given properties object into a map.

Methods inherited from class java.lang.Object

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

Method Detail

deleteDir

public static boolean deleteDir(File dir)

Recursively delete a directory.

Parameters:

dir - directory to be deleted

Returns:

true if everything went smoothly.

getSystemPath

public static String getSystemPath(File base,
                                   String relative)

Return a OS valid path.

Parameters:

base - basis directory

relative - relative path name to the basis directory

Returns:

the OS dependent path name

getSystemFile

public static File getSystemFile(File base,
                                 String relative)

Return a OS valid File.

Parameters:

base - basis directory

relative - relative path name to the basis directory

Returns:

the OS dependent File

exists

public static boolean exists(String filename)

Checks if the file exists.

Parameters:

filename - File name to be tested

Returns:

true if the given file exists.

getPropertiesFromFile

public static Properties getPropertiesFromFile(File filename)
                                        throws IOException

Parameters:

filename - properties file name

Returns:

the content of the resource as a Properties instance.

Throws:

IOException - if file is not found or if file is not a property file.

loadPropertiesFromStream

public static Properties loadPropertiesFromStream(InputStream is)
                                           throws IOException

Create a Properties from the given InputStream. Close the stream at the end of the operation.

Parameters:

is - InputStream

Returns:

properties

Throws:

IOException - if the stream cannot be read or if it doesn't contains a Properties

props2Map

public static Map<String,String> props2Map(Properties p)

Convert the given properties object into a map.

Parameters:

p - the properties object

Returns:

a map

getPropertiesFromClass

public static Properties getPropertiesFromClass(String resource,
                                                Class<?> clazz)
                                         throws IOException

Parameters:

resource - properties file name (relative to org/ow2/jonas/launcher/jonas)

Returns:

the content of the resource as a Properties instance.

Throws:

IOException - if file is not found or if file is not a property file.