Java Utililty Methods InputStream Create

InputStream asInputStream(byte[] bytes)
as Input Stream

return new ByteArrayInputStream(bytes);

InputStream asInputStream(File file)
Return an input stream to the file.

return new BufferedInputStream(new FileInputStream(file), BUFFER_SIZE);

InputStream asInputStream(Object content)
Returns an input stream for the specified content.

if (content instanceof byte[]) {
 return new ByteArrayInputStream((byte[]) content);
} else if (content instanceof File) {
 return new FileInputStream((File) content);
} else {
 return new ByteArrayInputStream(content.toString().getBytes("UTF-8"));

InputStream asInputStream(String str)
as Input Stream

try {
 return new ByteArrayInputStream(str.getBytes(CHARSET));
} catch (UnsupportedEncodingException e) {
 assert false;
return null;

InputStream getInputStream(File f)
Gets the input stream for a given file (for tar archives)

InputStream is = new FileInputStream(f);
try {
 return new GZIPInputStream(is);
} catch (IOException e) {
 return new FileInputStream(f);

InputStream getInputStream(File jarFile, String fileName)
get Input Stream

ZipFile zipFile = new ZipFile(jarFile);
ZipEntry zipEntry = zipFile.getEntry(fileName);
return zipFile.getInputStream(zipEntry);

InputStream getInputStream(File tarFile)
If tarFile's extension is simply tar, then returns a new FileInputStream.

String name = tarFile.getName().toLowerCase();
if (name.endsWith(".tar")) {
 return new FileInputStream(tarFile);
} else if (name.endsWith(".tar.gz") || name.endsWith(".tgz")) {
 return new GZIPInputStream(new FileInputStream(tarFile));
} else {
 throw new IllegalArgumentException(
 "tarFile = " + tarFile.getPath() + " has an invalid extension for a tar or tar/gzip file");
...

InputStream getInputStream(File tarFile)
get Input Stream

return (new FileInputStream(tarFile));

InputStream getInputStream(File TheFile)
get Input Stream

validateReadableFile(TheFile);
try {
 InputStream in = new FileInputStream(TheFile);
 return (in);
} catch (FileNotFoundException ex) {
 String Fullpath = TheFile.getAbsolutePath();
 throw new IllegalStateException(
 "Requested File '" + Fullpath + "' does not exist - but has been tested - HUH???");
...

InputStream getInputStream(FileInputStream fileInput)
get Input Stream

ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024 * 4];
int n = -1;
InputStream inputStream = null;
try {
 while ((n = fileInput.read(buffer)) != -1) {
 baos.write(buffer, 0, n);
 byte[] byteArray = baos.toByteArray();
 inputStream = new ByteArrayInputStream(byteArray);
 return inputStream;
} catch (FileNotFoundException e) {
 e.printStackTrace();
 return null;
} catch (IOException e) {
 e.printStackTrace();
 return null;
} finally {
 if (inputStream != null) {
 try {
 inputStream.close();
 } catch (IOException e) {
 e.printStackTrace();