Compress string(byte array) by Deflater : Zip Tar File « File Input Output « Java

Compress string(byte array) by Deflater


public class Main {
  public static void main(String[] args) throws IOException {
    Deflater def = new Deflater();
    byte[] input = new byte[1024];
    byte[] output = new byte[1024];

    FileInputStream fin = new FileInputStream("a.dat");
    FileOutputStream fout = new FileOutputStream("b.dat");

    int numRead =;

    def.setInput(input, 0, numRead);

    while (!def.needsInput()) {
      int numCompressedBytes = def.deflate(output, 0, output.length);
      if (numCompressedBytes > 0) {
        fout.write(output, 0, numCompressedBytes);


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