public final class IOUtil extends Object
Modifier and Type | Method and Description |
---|---|
static long |
checksum(File file)
Calculates the CRC32 checksum of the specified file.
|
static long |
checksum(String fileName)
Calculates the CRC32 checksum of the specified file.
|
static boolean |
copyFile(File src,
File dest)
Copies a file to a destination.
|
static long |
copyFile(InputStream fis,
OutputStream fos)
Copies one file to another.
|
static void |
delete(File file)
Recursively delete all the files in a directory and the directory.
|
static void |
extractResourceToFile(Class<?> clazz,
String path,
File file)
Extracts the resource to a file.
|
static byte[] |
getResourceAsBytes(Class<?> clazz,
String res)
Get the resource as a byte array.
|
static Properties |
getResourceAsProperties(ClassLoader loader,
String path)
Loads the given resource as a properties object.
|
static InputStream |
getResourceAsStream(Class<?> clazz,
String res)
Returns an input stream of the resource specified.
|
static String |
getResourceAsString(Class<?> clazz,
String res)
Read the entire stream into a String and return it.
|
static String |
getResourceAsString(Class<?> clazz,
String res,
Charset charset)
Read the entire stream into a String and return it.
|
static String |
getResourcePath(Class<?> c,
String res)
Get the path to a resource base on the package of given class.
|
static byte[] |
inputStreamToBytes(InputStream ins)
Takes a 'InputStream' and returns a byte array.
|
static Properties |
loadPropertiesFile(File file)
Loads the given file as a Properties file.
|
static Properties |
loadPropertiesFile(String string)
Attempt to load file based on a string base filename.
|
static URL |
makeURL(File dir,
String path)
Make a URL from a directory and path.
|
static void |
quietClose(Connection conn)
Quietly closes the connection.
|
static void |
quietClose(InputStream stream)
Quietly closes the stream.
|
static void |
quietClose(OutputStream stream)
Quietly closes the stream.
|
static void |
quietClose(Reader reader)
Quietly closes the reader.
|
static void |
quietClose(ResultSet resultset)
Quietly closes the resultset.
|
static void |
quietClose(Statement stmt)
Quietly closes the statement.
|
static void |
quietClose(Writer writer)
Quietly closes the writer.
|
static String |
readerToString(Reader rdr)
Takes a 'Reader' and returns the contents as a string.
|
static byte[] |
readFileBytes(File file)
Reads the given file as bytes
|
static String |
readFileUTF8(File file)
Reads the given file as UTF-8
|
static byte[] |
readInputStreamBytes(InputStream is,
boolean close)
Reads an entire file and returns the bytes.
|
static void |
storePropertiesFile(File f,
Properties properties)
Stores the given file as a Properties file.
|
static void |
unjar(JarFile jarFile,
File toDir)
Unjars the given file to the given directory.
|
static void |
writeFileUTF8(File file,
String contents)
Write the contents of the string out to a file in UTF-8 format.
|
public static final String UTF8
public static void quietClose(Reader reader)
IOException
which may be thrown and ignore it.reader
- Reader to closepublic static void quietClose(InputStream stream)
IOException
which may be thrown.stream
- Stream to closepublic static void quietClose(Writer writer)
IOException
which may be thrown.writer
- Writer to closepublic static void quietClose(OutputStream stream)
IOException
which may be thrown.stream
- Stream to closepublic static void quietClose(Statement stmt)
SQLException
which may be thrown.stmt
- Statement to closepublic static void quietClose(Connection conn)
SQLException
which may be thrown.conn
- Connection to closepublic static void quietClose(ResultSet resultset)
SQLException
which may be thrown.resultset
- ResultSet to closepublic static String getResourcePath(Class<?> c, String res)
c
- Class to get the package path too.res
- Name of the resource to get the path of.public static InputStream getResourceAsStream(Class<?> clazz, String res)
clazz
- res
- public static byte[] getResourceAsBytes(Class<?> clazz, String res)
clazz
- res
- public static String getResourceAsString(Class<?> clazz, String res, Charset charset)
clazz
- res
- charset
- public static String getResourceAsString(Class<?> clazz, String res)
clazz
- res
- public static byte[] inputStreamToBytes(InputStream ins)
ins
- public static String readerToString(Reader rdr)
rdr
- Producer for the string data.public static boolean copyFile(File src, File dest) throws IOException
src
- The source must be a filedest
- This can be a directory or a file.IOException
public static long copyFile(InputStream fis, OutputStream fos) throws IOException
fis
- fos
- IOException
public static long checksum(String fileName) throws IOException, FileNotFoundException
fileName
- the path to the file on which to calculate the checksumIOException
FileNotFoundException
public static long checksum(File file) throws IOException, FileNotFoundException
file
- the file on which to calculate the checksumIOException
FileNotFoundException
public static byte[] readInputStreamBytes(InputStream is, boolean close) throws IOException
is
- close
- if true, close when finished reading.IOException
public static void delete(File file) throws IOException
file
- the file to deleteRuntimeException
- if there is file that can not be deleted.IOException
public static Properties loadPropertiesFile(File file) throws IOException
file
- the file to load the propertied fromIOException
public static void storePropertiesFile(File f, Properties properties) throws IOException
IOException
public static Properties getResourceAsProperties(ClassLoader loader, String path) throws IOException
loader
- The class loaderpath
- The path to the resourceIOException
- If an error occurs reading itpublic static void extractResourceToFile(Class<?> clazz, String path, File file) throws IOException
clazz
- The class, relative to which path is resolvedpath
- The path to the resourcefile
- The file to extract toIOException
- If an error occurs reading itpublic static void unjar(JarFile jarFile, File toDir) throws IOException
jarFile
- The file to unjar.toDir
- The directory to unjar to.IOException
public static String readFileUTF8(File file) throws IOException
file
- The file to readIOException
- if there is an issue reading the file.public static byte[] readFileBytes(File file) throws IOException
file
- The file to readIOException
- if there is an issue reading the file.public static void writeFileUTF8(File file, String contents) throws IOException
file
- the file to write to.contents
- the contents of the file to write to.IOException
- if there is an issue writing the file.NullPointerException
- if the file parameter is null.public static URL makeURL(File dir, String path) throws IOException
dir
- directory to start from.path
- file or path to create the url.IOException
- if the URL create from the parameters does not specify a
file.public static Properties loadPropertiesFile(String string) throws IOException
string
- represents the file.IOException
- if there is an issue.Copyright © 2019. All rights reserved.