Java Utililty Methods Directory Create

List of utility methods to do Directory Create

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Description

The list of methods to do Directory Create are organized into topic(s).

Method

voidmkdirs(File f)
Makes sure that the directory in which the file is exists. 
File p = f.getParentFile();
if (!p.exists())
    p.mkdirs();
booleanmkDirs(File f)
create all missing folders and return true, if folder on success 
boolean ok = false;
if (f.isDirectory())
    ok = true;
else if (f.exists())
    ok = false;
else {
    ok = f.mkdirs();
return ok;
voidmkdirs(File f)
mkdirs 
if (f.exists()) {
    if (!f.isDirectory())
        throw new RuntimeException("Expected directory " + f.getAbsolutePath() + " but found a file.");
    return;
if (!f.mkdirs())
    throw new RuntimeException("Cannot create directory " + f.getAbsolutePath());
Listmkdirs(File f)
Like File.mkdirs() this creates all parent directories of f, but returns them in a list 
ArrayList<File> files = new ArrayList<File>();
if (f.isDirectory()) {
    files.add(f);
File parentDir = f.getParentFile();
while (parentDir != null && !parentDir.exists()) {
    files.add(parentDir);
    parentDir = parentDir.getParentFile();
...
voidmkdirs(File file)
mkdirs 
if (file.isDirectory()) {
    return;
if (!file.mkdirs()) {
    if (file.exists()) {
        throw new IOException("failed to create " + file + " file exists and not a directory");
    throw new IOException();
...
booleanmkdirs(File file)
Create all directories, including nonexistent parent directories. 
if (file != null) {
    String parent = file.getParent();
    if (parent != null) {
        File parentDir = new File(parent);
        if (!parentDir.exists()) {
            return parentDir.mkdirs();
    return true;
return false;
voidmkdirs(File file)
Check and create missing parent directories for the given file. 
if (file.exists() && !file.isFile()) {
    throw new IOException("File " + file.getPath() + " is actually not a file.");
File parentFile = file.getParentFile();
if (!parentFile.exists() && !parentFile.mkdirs()) {
    throw new IOException("Creating directories " + parentFile.getPath() + " failed.");
voidmkdirs(File file)
Create a directory hierarchy, raise an exception in case of failure. 
if (file != null) {
    if (!file.mkdirs()) {
        throw new IOException("Failed to create directories");
voidmkdirs(File file)
mkdirs 
if (!file.exists()) {
    file.mkdirs();
booleanmkdirs(File file)
A safer version of File.mkdirs, which works around a race in the 1.5 JDK where two VMs creating the same directory chain at the same time could end up in one VM failing to create a subdirectory. 
final File parentFile = file.getAbsoluteFile().getParentFile();
if (!parentFile.exists()) {
    mkdirs(parentFile);
if (parentFile.exists()) {
    return file.mkdir();
} else {
    return false;
...