Java Utililty Methods FileInputStream Create

InputStream getStream(String fileName, boolean resource)
get Stream

if (resource) {
 return Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
return new FileInputStream(fileName);

InputStream getStreamForFile(String fileName)
Open an input stream from a file, which may exist as a physical file or in a JAR file.

File file = new File(fileName);
if (file.exists()) {
 return new FileInputStream(file);
} else {
 return null;

InputStream getStreamForFile(String path)
get Stream For File

String zipFile = "";
for (String segment : path.replace("\\", "/").split("/")) {
 zipFile += segment + "/";
 if (segment.contains(".bin"))
 break;
String file = path.substring(zipFile.length());
return getStreamForFile(zipFile, file);
...

InputStream getStreamFromFile(File file)
get Stream From File

InputStream stream = null;
try {
 if (!file.exists()) {
 throw new RuntimeException("file " + file + " doesn't exist");
 if (file.isDirectory()) {
 throw new RuntimeException("file " + file + " is a directory");
 stream = new FileInputStream(file);
} catch (Exception e) {
 throw new RuntimeException("couldn't access file " + file + ": " + e.getMessage(), e);
return stream;