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  1. /* package whatever; // don't place package name! */
  2.  
  3. import sun.misc.BASE64Decoder;
  4. import sun.misc.BASE64Encoder;
  5.  
  6. import java.io.ByteArrayOutputStream;
  7. import java.util.zip.Deflater;
  8. import java.util.zip.Inflater;
  9.  
  10. /* Name of the class has to be "Main" only if the class is public. */
  11. class Ideone
  12. {
  13. 	public static final String encoding = "UTF-8";
  14.  
  15.     public static void main (String[] args) throws Exception {
  16.         String s = "123456789 a s d f g h j k l ; ' q w e r t y u i o p [ ] \\ 1 2 3 4 5 6 7 8 9 0 - = as df gh jk l; zx cv bn m, ./ qw er ty ui op []";
  17.         s += "qwe rty uio p[] asd fgh jkl zxc vbn m,. 123 456 789 1234 5678 90-= qwer tyui op[] asdf ghjk l;zx cvbn m,./";
  18.         s += "12345 67890 qwert yuiop asdfg hjklz xcvbn m,khg er xcgvdst 453 gd fyrt634 5 dg e653 545u7r ydf dgfsd fsart sdgdsg";
  19.  
  20.         String compressed = compress(s);
  21.         System.out.println("Original_String_Length = " + s.length());
  22.         System.out.println("Compressed_String_Length = " + compressed.length());
  23.  
  24.         String decompressed = decompress(decodeBase64(compressed));
  25.         System.out.println("Decompressed_String_Length = " + decompressed.length() + " == Original_String_Length (" + s.length() + ")");
  26.         System.out.println("Original_String == Decompressed_String = " + (s.equals(decompressed) ? "True" : "False"));
  27.     }
  28.  
  29.     public static String compress(String str) throws Exception {
  30.         byte[] bytes = str.getBytes(encoding);
  31.         Deflater deflater = new Deflater();
  32.         deflater.setInput(bytes);
  33.         deflater.finish();
  34.         ByteArrayOutputStream bos = new ByteArrayOutputStream(bytes.length);
  35.         byte[] buffer = new byte[1024];
  36.         while(!deflater.finished()) {
  37.             int count = deflater.deflate(buffer);
  38.             bos.write(buffer, 0, count);
  39.         }
  40.         bos.close();
  41.         byte[] output = bos.toByteArray();
  42.         return encodeBase64(output);
  43.     }
  44.  
  45.     public static String decompress(byte[] bytes) throws Exception {
  46.         Inflater inflater = new Inflater();
  47.         inflater.setInput(bytes);
  48.         ByteArrayOutputStream bos = new ByteArrayOutputStream(bytes.length);
  49.         byte[] buffer = new byte[1024];
  50.         while (!inflater.finished()) {
  51.             int count = inflater.inflate(buffer);
  52.             bos.write(buffer, 0, count);
  53.         }
  54.         bos.close();
  55.         byte[] output = bos.toByteArray();
  56.         return new String(output);
  57.     }
  58.  
  59.     public static String encodeBase64(byte[] bytes) throws Exception {
  60.         BASE64Encoder base64Encoder = new BASE64Encoder();
  61.         return base64Encoder.encodeBuffer(bytes).replace("\r\n", "").replace("\n", "");
  62.     }
  63.  
  64.     public static byte[] decodeBase64(String str) throws Exception {
  65.         BASE64Decoder base64Decoder = new BASE64Decoder();
  66.         return base64Decoder.decodeBuffer(str);
  67.     }
  68. }
Success #stdin #stdout 0.11s 320832KB
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stdout
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Original_String_Length = 348
Compressed_String_Length = 292
Decompressed_String_Length = 348 == Original_String_Length (348)
Original_String == Decompressed_String = True
https://ideone.com/y3fFiw
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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