Java Utililty Methods File Touch

List of utility methods to do File Touch

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Description

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

Method

voidtouch(File file)
touch 
if (file.exists()) {
    return;
try {
    boolean success = file.createNewFile();
    if (!success) {
        throw new RuntimeException("can't create file. [" + file + "]");
} catch (IOException e) {
    throw new RuntimeException("can't create file. [" + file + "]");
booleantouch(File file)
touch 
try {
    if (!file.exists()) {
        new FileOutputStream(file).close();
    return file.setLastModified(System.currentTimeMillis());
} catch (IOException e) {
    return false;
voidtouch(File file)
Implements the same behaviour as the "touch" utility on Unix. 
if (!file.exists()) {
    OutputStream out = new FileOutputStream(file);
    closeQuietly(out);
file.setLastModified(System.currentTimeMillis());
voidtouch(File file)
Updates a file's last-modified timestamp. 
if (file.exists())
    file.setLastModified(System.currentTimeMillis());
else {
    File parent = file.getParentFile();
    if (parent != null)
        parent.mkdirs();
    file.createNewFile();
voidtouch(File file)
touch 
file = file.getAbsoluteFile();
FileOutputStream out = new FileOutputStream(file);
out.close();
if (!file.exists()) {
    throw new IOException("touch failed: " + file);
voidtouch(File file)
touch 
if (!file.exists())
    createEmpty(file);
unguardedTouch(file);
voidtouch(File file)
touch 
long currentTime = System.currentTimeMillis();
if (!file.exists()) {
    try {
        if (!file.getParentFile().exists()) {
            file.getParentFile().mkdirs();
    } catch (Exception e) {
        System.err.println("Create file failed!");
...
voidtouch(File file)
Touch (update the modification time) the given file. 
file.setLastModified(System.currentTimeMillis());
booleantouch(File file, boolean createIfNeeded)
touch 
if (file.exists()) {
    if (!file.setLastModified(System.currentTimeMillis())) {
        return false;
} else if (createIfNeeded) {
    try {
        return file.createNewFile();
    } catch (IOException e) {
...
voidtouch(FileFilter filter, File root, boolean recurse)
touch 
if (filter.accept(root))
    root.setLastModified(new Date().getTime());
if (recurse && root.isDirectory()) {
    File[] children = root.listFiles();
    if (children != null) {
        for (int i = 0; i < children.length; i++) {
            touch(filter, children[i], recurse);