Java Utililty Methods File Size Get

String formattedFileSize = "0 B";
File fileReference = new File(filePath);
if (fileReference.exists()) {
    long fileSizeInBytes = fileReference.length();
    if (fileSizeInBytes < 1024) {
        return fileSizeInBytes + " B";
    int unitIndex = (int) (Math.log(fileSizeInBytes) / Math.log(1024));
...

return getFileSize(getFile(path));

int size = 0;
try {
    size = inputStream.available();
} catch (IOException e) {
    e.printStackTrace();
return size;

double result = fileSize;
if (result < 1024) {
    return result + "B";
DecimalFormat df = new DecimalFormat("#0.00");
result = result / 1024;
if (result < 1024) {
    return df.format(result) + "KB";
...

String fileSizeStr = "";
DecimalFormat df = new DecimalFormat("#.0");
if (fileSize < 1024) {
    fileSizeStr = df.format((double) fileSize) + "B";
} else if (fileSize < 1048576) {
    fileSizeStr = df.format((double) fileSize / 1024) + "K";
} else if (fileSize < 1073741824) {
    fileSizeStr = df.format((double) fileSize / 1048576) + "M";
...

File file = new File(address);
if (file.exists()) {
    return file.length();
} else {
    return 0;

File file = new File(fileName);
return file.length();

File file = new File(filename);
return getReadableFileSize(file.length());

try {
    File fl = new File(filename);
    int length = (int) fl.length();
    return length;
} catch (Exception e) {
    return 0;

File file = new File(fileName);
if (!file.exists()) {
    if (log != null)
        log.log(Level.WARNING, "File \"" + fileName + "\" not found, so size is zero");
    return 0;
return file.length();