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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. import java.nio.ByteBuffer;
  8. import java.nio.LongBuffer;
  9. import java.util.UUID;
  10.  
  11. import java.util.Base64;
  12.  
  13.  
  14. /* Name of the class has to be "Main" only if the class is public. */
  15. class Ideone
  16. {
  17.  
  18. 	private static byte[] getByteArray(UUID uuid) {
  19.         byte[] byteArray = new byte[(Long.SIZE / Byte.SIZE) * 2];
  20.         ByteBuffer buffer = ByteBuffer.wrap(byteArray);
  21.         LongBuffer longBuffer = buffer.asLongBuffer();
  22.         longBuffer.put(new long[]{uuid.getMostSignificantBits(), uuid.getLeastSignificantBits()});
  23.         return byteArray;
  24.     }
  25.  
  26. 	/* public static String generateKeyUsingUniqueId(UUID uuid) {
  27.         byte[] byteArray = getByteArray(uuid);
  28.         byte[] encodedArray = BASE64.encode(byteArray);
  29.         String key = new String(encodedArray);
  30.         return key;
  31.     } */
  32.  
  33.     public static String getId(UUID uuid) {
  34.     	byte[] uuidBytes = getByteArray(uuid);
  35.     	return Base64.getEncoder().encodeToString(uuidBytes);
  36.     }
  37.  
  38.  
  39.  
  40. 	public static void main (String[] args) throws java.lang.Exception
  41. 	{
  42. 		UUID u = UUID.fromString("070b9a90-3c33-4111-9f59-fbf44a283be6");
  43. 		System.out.println(getId(u));
  44. 	}
  45. }
Success #stdin #stdout 0.08s 47468KB
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BwuakDwzQRGfWfv0Sig75g==
https://ideone.com/PzoN3J
language:
Java (HotSpot 12)
created:
1 year ago
visibility:
public

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