Java Utililty Methods File Size Get

List of utility methods to do File Size Get

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Description

The list of methods to do File Size Get are organized into topic(s).

Method

longgetFileSize(String loc)
Returns the length of a file in bytes given its location. 
File f = new File(loc);
if (!f.exists()) {
    System.err.println("File " + loc + " does not exist");
    System.exit(1);
long leng = f.length();
if (leng == 0) {
    System.err.println("File " + loc + " has zero length");
...
longgetFileSize(String path)
get File Size 
File file = new File(path);
if (file.isFile() && file.exists()) {
    return file.length();
return 0;
longgetFileSize(String path)
Returns the size of the specified file in bytes. 
try {
    File file = new File(path);
    long fileSize = file.length();
    return fileSize;
} catch (Exception e) {
    System.out.println("Could not obtain file size:\n" + e.toString());
    return -1;
StringgetFilesize(String path)
Returns the file size in MB, KB or B rounded to two decimal places. 
File file = new File(path);
long fileSize = file.length();
float kfileSize = fileSize / 1024;
float mfileSize = kfileSize / 1024;
String size;
if (fileSize > 1048576) {
    size = round(mfileSize, 2) + "MB";
} else if (fileSize > 1024) {
...
longgetFileSize2(String filename)
get File Size 
File file = new File(filename);
return file.length();
longgetFileSizeAggregate(String[] files)
Gets the file size aggregate. 
int size = 0;
for (String f : files) {
    size += new File(f).length();
return size;
StringgetFileSizeFormat(double inputvalue)
get File Size Format 
String outputvalue = "0";
if (inputvalue >= 1024 * 1024) {
    outputvalue = formatFloat("###,##0.0", inputvalue / (1024 * 1024)) + "M";
} else if (inputvalue >= 1024) {
    outputvalue = formatFloat("###,##0.0", inputvalue / 1024) + "K";
} else {
    outputvalue = formatFloat("###,##0", inputvalue) + "Bytes";
return outputvalue;
StringgetFileSizeFormat(String total_size)
getFileSizeFormat() 
double file_size = Double.parseDouble(total_size);
String file_size_nm = "";
DecimalFormat f2 = new DecimalFormat("0.00");
if (1023 < file_size) {
    file_size = file_size / 1024;
    file_size_nm = f2.format(file_size) + "KB";
} else {
    file_size_nm = file_size + "byte";
...
StringgetFileSizeLabel(long sizeInBytes)
get File Size Label 
double divisor;
String units = "";
if (sizeInBytes > Math.pow(10, 9)) {
    divisor = Math.pow(10, 9);
    units = GB;
} else if (sizeInBytes > Math.pow(10, 6)) {
    divisor = Math.pow(10, 6);
    units = MB;
...
longgetFileSizeRecursive(File file, boolean subFolders)
get File Size Recursive 
long size = 0;
if (file.isDirectory()) {
    File[] files = file.listFiles();
    if (files != null) {
        for (File element : files) {
            if (!subFolders && element.isDirectory()) {
                continue;
            long tmpSize = getFileSizeRecursive(element, subFolders);
            if (tmpSize != -1) {
                size += tmpSize;
        return size;
    return -1;
return file.length();