Examples of java.util.Random.nextBytes()

java.util.Random.nextBytes()
Generates random bytes and places them into a user-supplied byte array. The number of random bytes produced is equal to the length of the byte array.
The method {@code nextBytes} is implemented by class {@code Random}as if by:
```
  {@code}public void nextBytes(byte[] bytes)  for (int i = 0; i < bytes.length; ) for (int rnd = nextInt(), n = Math.min(bytes.length - i, 4); n-- > 0; rnd >>= 8) bytes[i++] = (byte)rnd; }}
```
@param bytes the byte array to fill with random bytes @throws NullPointerException if the byte array is null @since 1.1

    
    long seed = random().nextLong();
    Random random = new Random(seed);
    
    for (int i = 0; i < Integer.MAX_VALUE; i++) {
      random.nextBytes(bytes);
      w.addDocument(doc);
      if (i % 100000 == 0) {
        System.out.println("indexed: " + i);
        System.out.flush();
      }

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    for (AtomicReaderContext context : r.leaves()) {
      AtomicReader reader = context.reader();
      BytesRef scratch = new BytesRef();
      BinaryDocValues dv = reader.getSortedDocValues("dv");
      for (int i = 0; i < reader.maxDoc(); i++) {
        random.nextBytes(bytes);
        dv.get(i, scratch);
        assertEquals(data, scratch);
      }
    }

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        Entropy entropy = new Entropy(entropyQuality, seed);
        ArrayList<ListenableFuture<?>> results = new ArrayList<ListenableFuture<?>>(keyCount);
        for (int ii = 0; ii < keyCount; ii++) {
            byte key[] = new byte[keySize];
            do {
                r.nextBytes(key);
            }
            while (!keySet.add(key));
            keys.add(key);
            byte value[] = entropy.get(valueSize);
            values.add(value);

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        final Random random = new Random();


        final Hex hex = new Hex();
        for (int i = 5; i > 0; i--) {
            final byte[] data = new byte[random.nextInt(10000) + 1];
            random.nextBytes(data);


            // static API
            final char[] encodedChars = Hex.encodeHex(data);
            byte[] decodedBytes = Hex.decodeHex(encodedChars);
            assertTrue(Arrays.equals(data, decodedBytes));

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    public void testStoreTo() throws IOException, StorageFormatException, ResumeFailedException {
        File tempFile = File.createTempFile("test-storeto", ".tmp", base);
        byte[] buf = new byte[4096];
        Random r = new Random(1267612);
        r.nextBytes(buf);
        FileRandomAccessBuffer rafw = new FileRandomAccessBuffer(tempFile, buf.length, false);
        rafw.pwrite(0, buf, 0, buf.length);
        byte[] tmp = new byte[buf.length];
        rafw.pread(0, tmp, 0, buf.length);
        assertArrayEquals(buf, tmp);

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    public void testBucketToRAFWhileArray() throws IOException {
        int len = 4095;
        Random r = new Random(21162101);
        TempBucket bucket = (TempBucket) factory.makeBucket(1024);
        byte[] buf = new byte[len];
        r.nextBytes(buf);
        OutputStream os = bucket.getOutputStream();
        os.write(buf.clone());
        os.close();
        assertTrue(bucket.isRAMBucket());
        assertEquals(len, bucket.size());

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    public void testBucketToRAFCallTwiceArray() throws IOException {
        int len = 4095;
        Random r = new Random(21162101);
        TempBucket bucket = (TempBucket) factory.makeBucket(1024);
        byte[] buf = new byte[len];
        r.nextBytes(buf);
        OutputStream os = bucket.getOutputStream();
        os.write(buf.clone());
        os.close();
        assertTrue(bucket.isRAMBucket());
        assertEquals(len, bucket.size());

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    public void testBucketToRAFCallTwiceFile() throws IOException {
        int len = 4095;
        Random r = new Random(21162101);
        TempBucket bucket = (TempBucket) factory.makeBucket(1024);
        byte[] buf = new byte[len];
        r.nextBytes(buf);
        OutputStream os = bucket.getOutputStream();
        os.write(buf.clone());
        os.close();
        assertTrue(bucket.isRAMBucket());
        assertEquals(len, bucket.size());

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    public void testBucketToRAFFreeBucketWhileArray() throws IOException {
        int len = 4095;
        Random r = new Random(21162101);
        TempBucket bucket = (TempBucket) factory.makeBucket(1024);
        byte[] buf = new byte[len];
        r.nextBytes(buf);
        OutputStream os = bucket.getOutputStream();
        os.write(buf.clone());
        os.close();
        assertTrue(bucket.isRAMBucket());
        assertEquals(len, bucket.size());

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    public void testBucketToRAFFreeWhileArray() throws IOException {
        int len = 4095;
        Random r = new Random(21162101);
        TempBucket bucket = (TempBucket) factory.makeBucket(1024);
        byte[] buf = new byte[len];
        r.nextBytes(buf);
        OutputStream os = bucket.getOutputStream();
        os.write(buf.clone());
        os.close();
        assertTrue(bucket.isRAMBucket());
        assertEquals(len, bucket.size());

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