Package com.helger.commons.io.file

Class FileChannelHelper

java.lang.Object

com.helger.commons.io.file.FileChannelHelper

@Immutable
public final class FileChannelHelper
extends Object

Miscellaneous FileChannel utility methods.

Author:

Philip Helger

Method Summary

Modifier and Type	Method	Description
static FileChannel	getFileReadChannel(File aFile)
static FileChannel	getFileReadChannel(String sFilename)
static long	getFileSize(FileChannel aChannel)
static FileChannel	getFileWriteChannel(File aFile)
static FileChannel	getFileWriteChannel(File aFile, EAppend eAppend)
static FileChannel	getFileWriteChannel(String sFilename)
static FileChannel	getFileWriteChannel(String sFilename, EAppend eAppend)
static InputStream	getInputStream(File aFile)
static InputStream	getMappedInputStream(File aFile)	Get an input stream to the specified file, using memory mapping.
static OutputStream	getMappedOutputStream(File aFile)
static OutputStream	getMappedOutputStream(File aFile, EAppend eAppend)
static OutputStream	getMappedOutputStream(String sFilename)
static OutputStream	getMappedOutputStream(String sFilename, EAppend eAppend)

Methods inherited from class java.lang.Object

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

Method Detail

getFileSize

@CheckForSigned
public static long getFileSize(@Nullable
                               FileChannel aChannel)

getInputStream

@Nullable
public static InputStream getInputStream(@Nonnull
                                         File aFile)

getFileReadChannel

@Nullable
public static FileChannel getFileReadChannel(@Nonnull
                                             String sFilename)

getFileReadChannel

@Nullable
public static FileChannel getFileReadChannel(@Nonnull
                                             File aFile)

getMappedInputStream

@Nullable
public static InputStream getMappedInputStream(@Nonnull
                                               File aFile)

Get an input stream to the specified file, using memory mapping. If memory mapping fails, a regular FileInputStream is returned.

Parameters:

aFile - The file to use. May not be null.

Returns:

The Input stream to use.

getFileWriteChannel

@Nullable
public static FileChannel getFileWriteChannel(@Nonnull
                                              String sFilename)

getFileWriteChannel

@Nullable
public static FileChannel getFileWriteChannel(@Nonnull
                                              String sFilename,
                                              @Nonnull
                                              EAppend eAppend)

getFileWriteChannel

@Nullable
public static FileChannel getFileWriteChannel(@Nonnull
                                              File aFile)

getFileWriteChannel

@Nullable
public static FileChannel getFileWriteChannel(@Nonnull
                                              File aFile,
                                              @Nonnull
                                              EAppend eAppend)

getMappedOutputStream

@Nullable
public static OutputStream getMappedOutputStream(@Nonnull
                                                 String sFilename)

getMappedOutputStream

@Nullable
public static OutputStream getMappedOutputStream(@Nonnull
                                                 String sFilename,
                                                 @Nonnull
                                                 EAppend eAppend)

getMappedOutputStream

@Nullable
public static OutputStream getMappedOutputStream(@Nonnull
                                                 File aFile)

getMappedOutputStream

@Nullable
public static OutputStream getMappedOutputStream(@Nonnull
                                                 File aFile,
                                                 @Nonnull
                                                 EAppend eAppend)