Java Utililty Methods File Content Read

byte[] buffer = new byte[(int) testFile.length()];
try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(testFile))) {
    bis.read(buffer);
    return new String(buffer);
} catch (IOException exception) {
    throw new RuntimeException(exception);

return getFileContents(f, DEFAULT_ENCODING);

byte[] buffer;
BufferedInputStream inputStream;
inputStream = null;
try {
    inputStream = new BufferedInputStream(new FileInputStream(file));
    buffer = new byte[(int) file.length()];
    inputStream.read(buffer);
} finally {
...

BufferedReader br;
if (filename.endsWith(".gz"))
    br = new BufferedReader(
            new InputStreamReader(new GZIPInputStream(new FileInputStream(filename)), "UTF-8"));
else
    br = new BufferedReader(new InputStreamReader(new FileInputStream(filename), "UTF-8"));
StringBuilder sb = new StringBuilder();
while (true) {
...

File file = new File(fileName);
String results = null;
try {
    int length = (int) file.length(), bytesRead;
    byte byteArray[] = new byte[length];
    ByteArrayOutputStream bytesBuffer = new ByteArrayOutputStream(length);
    FileInputStream inputStream = new FileInputStream(file);
    bytesRead = inputStream.read(byteArray);
...