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<TITLE>Copying One File to Another (Java Developers Almanac Example)
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    <A HREF="../java.io/pkg.html">java.io</A><font color="#666666" class="xsmall-font">
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  <h3>e1071. Copying One File to Another</h3>

This example uses file streams to copy the contents of one
file to another file. See <a href="../java.nio/File2File.html" class="eglink"><b>e172</b> Copying One File to Another</a> for an example
that uses file channels.


<pre>    // Copies src file to dst file.
    // If the dst file does not exist, it is created
    void copy(File src, File dst) throws IOException {
        InputStream in = new FileInputStream(src);
        OutputStream out = new FileOutputStream(dst);
    
        // Transfer bytes from in to out
        byte[] buf = new byte[1024];
        int len;
        while ((len = in.read(buf)) &gt; 0) {
            out.write(buf, 0, len);
        }
        in.close();
        out.close();
    }
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            &nbsp;<b>Related Examples</b></font></td>
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e19. <a class="eglink" href="Exists.html?l=rel">
    Determining If a File or Directory Exists
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e20. <a class="eglink" href="CreateFile.html?l=rel">
    Creating a File
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e21. <a class="eglink" href="GetLength.html?l=rel">
    Getting the Size of a File
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e22. <a class="eglink" href="DeleteFile.html?l=rel">
    Deleting a File
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e23. <a class="eglink" href="CreateTempFile.html?l=rel">
    Creating a Temporary File
</a>
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e24. <a class="eglink" href="RenameFile.html?l=rel">
    Renaming a File or Directory
</a>
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e25. <a class="eglink" href="MoveFile.html?l=rel">
    Moving a File or Directory to Another Directory
</a>
<br>

e26. <a class="eglink" href="Mod.html?l=rel">
    Getting and Setting the Modification Time of a File or Directory
</a>
<br>

e27. <a class="eglink" href="Sync.html?l=rel">
    Forcing Updates to a File to the Disk
</a>
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        See also: 
<a class="eglink" href="/egs/java.io/pkg.html?l=rel#Directories">
    Directories
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<a class="eglink" href="/egs/java.io/pkg.html?l=rel#Encodings">
    Encodings
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<a class="eglink" href="/egs/java.io/pkg.html?l=rel#Filenames%20and%20Pathnames">
    Filenames and Pathnames
</a>&nbsp;&nbsp;

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

<a class="eglink" href="/egs/java.io/pkg.html?l=rel#Reading%20and%20Writing">
    Reading and Writing
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<a class="eglink" href="/egs/java.io/pkg.html?l=rel#Serialization">
    Serialization
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