How to compress the data which are passed over the network in java in order to improve the performance.
import java.util.zip.*;
import java.io.*;
public class Compression {
public Compression() {
}
public static byte[] compressData(String stringToCompress)
{
byte[] input = stringToCompress.getBytes();
System.out.println(" Original Lenght of Bytes " + input.length);
// 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) {
}
byte[] compressedData = bos.toByteArray();
return compressedData;
}
public static byte[] decompressData(byte[] byteArrayToDecompress)
{
System.out.println(" After Compression " + byteArrayToDecompress.length);
Inflater decompressor = new Inflater();
decompressor.setInput(byteArrayToDecompress);
// Create an expandable byte array to hold the decompressed data
ByteArrayOutputStream bos1 = new ByteArrayOutputStream(byteArrayToDecompress.length);
// Decompress the data
byte[] buf1 = new byte[1024];
while (!decompressor.finished()) {
try {
int count = decompressor.inflate(buf1);
bos1.write(buf1, 0, count);
} catch (DataFormatException e) {
}
}
try {
bos1.close();
} catch (IOException e) {
}
// Get the decompressed data
byte[] decompressedData = bos1.toByteArray();
return decompressedData;
}
public static void main(String args[]){
try
{
byte[] compress = compressData("Test String Test String Test String Test String Test String ");
byte[] decompress = decompressData(compress);
}catch(Exception e)
{
e.printStackTrace();
}
}
}
