Java Utililty Methods Is Link File

List of utility methods to do Is Link File

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Description

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

Method

booleanisLink(@Nonnull File file)
Returns whether the given file is a link 
if (!file.exists()) {
    throw new FileNotFoundException(file.getAbsolutePath());
@Nonnull
String canonicalPath = file.getCanonicalPath();
@Nonnull
String absolutePath = file.getAbsolutePath();
return !absolutePath.equals(canonicalPath);
...
booleanisLink(File file)
is Link 
String cnnpath = file.getCanonicalPath();
String abspath = file.getAbsolutePath();
return !abspath.equals(cnnpath);
booleanisLink(File file)
is Link 
try {
    if (!file.exists()) {
        return true;
    } else {
        String cnnpath = file.getCanonicalPath();
        String abspath = file.getAbsolutePath();
        return !abspath.equals(cnnpath);
} catch (IOException ex) {
    System.err.println(ex);
    return true;
booleanisLink(File file)
Return true if the specified file is a link
Be careful, it does work in almost case, but not all 
if (file == null)
    return false;
final File canon;
if (file.getParent() == null)
    canon = file;
else
    canon = new File(file.getParentFile().getCanonicalFile(), file.getName());
return !canon.getCanonicalFile().getAbsolutePath().equalsIgnoreCase(canon.getAbsolutePath());
...
booleanisLink(final File file)
Checks if the given File Object may be a symbolic link.
For a link that actually points to something (either a file or a directory), the absolute path is the path through the link, whereas the canonical path is the path the link references.
Dangling links appear as files of size zero, and generate a FileNotFoundException when you try to open them. 
try {
    if (!file.exists()) {
        return true;
    String cnnpath = file.getCanonicalPath();
    String abspath = file.getAbsolutePath();
    return !abspath.equals(cnnpath);
} catch (IOException ex) {
...
booleanisLink(java.io.File f)
is Link 
try {
    String ap[] = f.getAbsolutePath().split(java.io.File.pathSeparator);
    String cp[] = f.getCanonicalPath().split(java.io.File.pathSeparator);
    return !ap[ap.length - 1].equals(cp[cp.length - 1]);
} catch (Throwable t) {
return false;