Java Is Link File isLink(@Nonnull File file)

Description

Returns whether the given file is a link

License

Open Source License

Parameter

Parameter	Description
file	a File object.

Exception

Parameter	Description
IOException	if any.

Return

whether the given file is a sym link

Declaration

public static boolean isLink(@Nonnull File file) throws IOException 

Method Source Code

//package com.java2s;
/**/* w  ww  .  ja v  a2  s .  com*/
 * Copyright (C) cedarsoft GmbH.
 *
 * Licensed under the GNU General Public License version 3 (the "License")
 * with Classpath Exception; you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *         http://www.cedarsoft.org/gpl3ce
 *         (GPL 3 with Classpath Exception)
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 3 only, as
 * published by the Free Software Foundation. cedarsoft GmbH designates this
 * particular file as subject to the "Classpath" exception as provided
 * by cedarsoft GmbH in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 3 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 3 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact cedarsoft GmbH, 72810 Gomaringen, Germany,
 * or visit www.cedarsoft.com if you need additional information or
 * have any questions.
 */

import javax.annotation.Nonnull;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

public class Main {
    /**
     * Returns whether the given file is a link
     *
     * @param file a File object.
     * @return whether the given file is a sym link
     *
     * @throws IOException if any.
     */
    public static boolean isLink(@Nonnull File file) throws IOException {
        if (!file.exists()) {
            throw new FileNotFoundException(file.getAbsolutePath());
        }

        @Nonnull
        String canonicalPath = file.getCanonicalPath();
        @Nonnull
        String absolutePath = file.getAbsolutePath();
        return !absolutePath.equals(canonicalPath);
    }
}

Related

1. isLink(File file)
2. isLink(File file)
3. isLink(File file)
4. isLink(final File file)