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 and 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)