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How to compress a Byte Array |
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This Java tip illustrates an example of compressing a Byte Array. Developer may
compress a byte array with the help of Deflater class.
byte[] input = "compression string".getBytes();
// Compressor with highest level of compression
Deflater compressor = new Deflater();
compressor.setLevel(Deflater.BEST_COMPRESSION);
// Give the compressor the data to compress
compressor.setInput(input);
compressor.finish();
// Create an expandable byte array to hold the compressed data.
// It is not necessary that the compressed data will be smaller than
// the uncompressed data.
ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);
// Compress the data
byte[] buf = new byte[1024];
while (!compressor.finished()) {
int count = compressor.deflate(buf);
bos.write(buf, 0, count);
}
try {
bos.close();
} catch (IOException e) {
}
// Get the compressed data
byte[] compressedData = bos.toByteArray();
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