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<TITLE>Calculating the Checksum of a File
(Java Developers Almanac Example)
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<h3>
e457.
Calculating the Checksum of a File</h3>
<pre>
try {
// Compute Adler-32 checksum
CheckedInputStream cis = new CheckedInputStream(
new FileInputStream(<font color="#0066ff"><i>"filename"</i></font>), new Adler32());
byte[] tempBuf = new byte[<font color="#0066ff"><i>128</i></font>];
while (cis.read(tempBuf) >= 0) {
}
long checksum = cis.getChecksum().getValue();
} catch (IOException e) {
}
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Related Examples
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e456. <a class="eglink" href="CalculateChecksum.html?l=rel">
Calculating the Checksum of a Byte Array
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See also:
<a class="eglink" href="/egs/java.util.zip/pkg.html?l=rel#GZIP">
GZIP
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<a class="eglink" href="/egs/java.util.zip/pkg.html?l=rel#ZIP">
ZIP
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