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  1. import java.util.zip.Deflater;
  2. import java.util.zip.Inflater;
  3.  
  4. class HelloWorld  {
  5.  
  6. 	public HelloWorld() {
  7. 	}
  8.  
  9. 	private static void printB(byte[] d, int len) {
  10. 		for (int i = 0; i < len; i++) {
  11. 			System.out.printf("%02X ", d[i]);
  12. 		}
  13. 		System.out.println();
  14. 	}
  15.  
  16. 	private static void printD(byte[] d, int len) {
  17. 		for (int i = 0; i < len; i++) {
  18. 			String s = "00000000" + Integer.toString(0xFF & d[i], 2) + " ";
  19. 			System.out.print(s.substring(s.length() - 9));
  20. 		}
  21. 		System.out.println();
  22. 	}
  23.  
  24. 	private static void printR(byte[] d, int len) {
  25. 		for (int i = 0; i < len; i++) {
  26. 			String s = "00000000" + Integer.toString(0xFF & d[i], 2);
  27. 			StringBuilder b = new StringBuilder(s.substring(s.length() - 8));
  28. 			System.out.print(b.reverse() + " ");
  29. 		}
  30. 		System.out.println();
  31. 	}
  32.  
  33. 	public static void main(String[] args) throws java.lang.Exception {
  34.  
  35. 		 try {
  36. 		     // Encode a String into bytes
  37. 		     String inputString = "blahblahblah";
  38. 		     byte[] input = inputString.getBytes("UTF-8");
  39.  
  40. 		     System.out.println("input:");
  41. 		     HelloWorld.printB(input, input.length);
  42. 		     HelloWorld.printD(input, input.length);
  43. 		     HelloWorld.printR(input, input.length);
  44.  
  45. 		     // Compress the bytes
  46. 		     byte[] output = new byte[100];
  47. 		     Deflater compresser = new Deflater(
  48. 		     	Deflater.DEFAULT_COMPRESSION, true);
  49. 		     compresser.setInput(input);
  50. 		     compresser.finish();
  51. 		     int compressedDataLength = compresser.deflate(output);
  52. 		     compresser.end();
  53.  
  54. 		     output[0] = 0x4B;
  55. 		     output[1] = -54; //0xCA;
  56. 		     output[2] = 0x49;
  57. 		     output[3] = -52; // 0xCC;
  58. 		     output[4] = -128; //0x80;
  59. 		     output[5] = 0x62;
  60. 		     output[6] = 0x00;
  61. 		     compressedDataLength = 7;
  62.  
  63.  
  64. 		     System.out.println("output:");
  65. 		     HelloWorld.printB(output, compressedDataLength);
  66. 		     HelloWorld.printD(output, compressedDataLength);
  67. 		     HelloWorld.printR(output, compressedDataLength);
  68.  
  69. 		     // Decompress the bytes
  70. 		     Inflater decompresser = new Inflater(true);
  71. 		     decompresser.setInput(output, 0, compressedDataLength);
  72. 		     byte[] result = new byte[100];
  73. 		     int resultLength = decompresser.inflate(result);
  74. 		     decompresser.end();
  75.  
  76. 		     System.out.println("decompress:");
  77. 		     HelloWorld.printB(result,  resultLength);
  78.  
  79. 		     // Decode the bytes into a String
  80. 		     String outputString = new String(result, 0, resultLength, "UTF-8");
  81. 		     System.out.println(outputString);
  82. 		 } catch(java.lang.IllegalArgumentException ex) {
  83. 		 	ex.printStackTrace();
  84. 		 } catch(java.io.UnsupportedEncodingException ex) {
  85. 		     // handle
  86. 		 } catch (java.util.zip.DataFormatException ex) {
  87. 		     // handle
  88. 		 }
  89.  
  90.  
  91. 	}
  92.  
  93. }
Success #stdin #stdout 0.08s 380544KB
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stdin
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Standard input is empty
stdout
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input:
62 6C 61 68 62 6C 61 68 62 6C 61 68 
01100010 01101100 01100001 01101000 01100010 01101100 01100001 01101000 01100010 01101100 01100001 01101000 
01000110 00110110 10000110 00010110 01000110 00110110 10000110 00010110 01000110 00110110 10000110 00010110 
output:
4B CA 49 CC 80 62 00 
01001011 11001010 01001001 11001100 10000000 01100010 00000000 
11010010 01010011 10010010 00110011 00000001 01000110 00000000 
decompress:
62 6C 61 68 62 6C 61 68 62 6C 61 
blahblahbla
https://ideone.com/zkH5Kv
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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