compressfile.html

来自「java类库详细讲解」· HTML 代码 · 共 127 行

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<TITLE>Compressing a File in the GZIP Format
(Java Developers Almanac Example)
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  <h3>
    e451.  
    Compressing a File in the GZIP Format</h3>



<pre>
    try {
        // Create the GZIP output stream
        String outFilename = <font color="#0066ff"><i>"outfile.gzip"</i></font>;
        GZIPOutputStream out = new GZIPOutputStream(new FileOutputStream(outFilename));
    
        // Open the input file
        String inFilename = <font color="#0066ff"><i>"infilename"</i></font>;
        FileInputStream in = new FileInputStream(inFilename);
    
        // Transfer bytes from the input file to the GZIP output stream
        byte[] buf = new byte[<font color="#0066ff"><i>1024</i></font>];
        int len;
        while ((len = in.read(buf)) &gt; 0) {
            out.write(buf, 0, len);
        }
        in.close();
    
        // Complete the GZIP file
        out.finish();
        out.close();
    } catch (IOException e) {
    }
</pre>
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            &nbsp;Related Examples
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e452. <a class="eglink" href="UncompressFile.html?l=rel">
    Uncompressing a File in the GZIP Format
</a>
<br>


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        See also: 
<a class="eglink" href="/egs/java.util.zip/pkg.html?l=rel#Checksums">
    Checksums
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/java.util.zip/pkg.html?l=rel#ZIP">
    ZIP
</a>&nbsp;&nbsp;

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