Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;

public class Main {
    public static void main(String[] args) throws Exception {
        String input = "Hello world!";
        byte[] uncompressedData = input.getBytes("UTF-8");

        byte[] compressedData = compress(uncompressedData, Deflater.BEST_COMPRESSION, false);

        byte[] decompressedData = decompress(compressedData, false);

        String output = new String(decompressedData, "UTF-8");

        System.out.println("Uncompressed data length: " + uncompressedData.length);
        System.out.println("Compressed data length:  " + compressedData.length);
        System.out.println("Decompressed data length:  " + decompressedData.length);
    }

    public static byte[] compress(byte[] input, int compressionLevel, boolean GZIPFormat) throws IOException {
        Deflater compressor = new Deflater(compressionLevel, GZIPFormat);

        compressor.setInput(input);

        compressor.finish();

        ByteArrayOutputStream bao = new ByteArrayOutputStream();
        byte[] readBuffer = new byte[1024];
        int readCount = 0;

        while (!compressor.finished()) {
            readCount = compressor.deflate(readBuffer);
            if (readCount > 0) {
                bao.write(readBuffer, 0, readCount);
            }
        }

        compressor.end();
        return bao.toByteArray();
    }

    public static byte[] decompress(byte[] input, boolean GZIPFormat) throws IOException, DataFormatException {
        Inflater decompressor = new Inflater(GZIPFormat);
        decompressor.setInput(input);
        ByteArrayOutputStream bao = new ByteArrayOutputStream();
        byte[] readBuffer = new byte[1024];
        int readCount = 0;

        while (!decompressor.finished()) {
            readCount = decompressor.inflate(readBuffer);
            if (readCount > 0) {
                bao.write(readBuffer, 0, readCount);
            }
        }
        decompressor.end();
        return bao.toByteArray();
    }
}