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82 lines
3.1 KiB
82 lines
3.1 KiB
/*
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* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* - Neither the name of Oracle nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This source code is provided to illustrate the usage of a given feature
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* or technique and has been deliberately simplified. Additional steps
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* required for a production-quality application, such as security checks,
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* input validation and proper error handling, might not be present in
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* this sample code.
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*/
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import java.nio.file.*;
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import java.nio.file.attribute.*;
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import java.io.IOException;
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/**
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* Example utility that works like the df(1M) program to print out disk space
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* information
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*/
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public class DiskUsage {
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static final long K = 1024;
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static void printFileStore(FileStore store) throws IOException {
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long total = store.getTotalSpace() / K;
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long used = (store.getTotalSpace() - store.getUnallocatedSpace()) / K;
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long avail = store.getUsableSpace() / K;
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String s = store.toString();
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if (s.length() > 20) {
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System.out.println(s);
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s = "";
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}
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System.out.format("%-20s %12d %12d %12d\n", s, total, used, avail);
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}
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public static void main(String[] args) throws IOException {
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System.out.format("%-20s %12s %12s %12s\n", "Filesystem", "kbytes", "used", "avail");
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if (args.length == 0) {
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FileSystem fs = FileSystems.getDefault();
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for (FileStore store: fs.getFileStores()) {
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printFileStore(store);
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}
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} else {
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for (String file: args) {
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FileStore store = Files.getFileStore(Paths.get(file));
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printFileStore(store);
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}
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}
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}
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}
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