get File Attributes via NIO - Java File Path IO

Java examples for File Path IO:File Attribute

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Description

get File Attributes via NIO

Demo Code

/*// w  w  w .ja va 2  s. co m
 * Copyright 2014 The Codehaus Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package com.java2s;
import javax.annotation.Nonnull;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.Path;
import java.nio.file.attribute.BasicFileAttributes;

import java.nio.file.attribute.PosixFileAttributes;

public class Main {
    public static void main(String[] argv) throws Exception {
        File file = new File("Main.java");
        System.out.println(getFileAttributes(file));
    }

    @Nonnull
    public static BasicFileAttributes getFileAttributes(@Nonnull File file)
            throws IOException {
        return getFileAttributes(file.toPath());
    }

    public static BasicFileAttributes getFileAttributes(Path path)
            throws IOException {
        if (path.getFileSystem().supportedFileAttributeViews()
                .contains("posix")) {

            try {
                return Files.readAttributes(path,
                        PosixFileAttributes.class,
                        LinkOption.NOFOLLOW_LINKS);
            } catch (UnsupportedOperationException ignore) {
                // Maybe ignoring is dramatic. Maybe not. But we do get the basic attrs anyqway
            }
        }
        return Files.readAttributes(path, BasicFileAttributes.class,
                LinkOption.NOFOLLOW_LINKS);
    }
}

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