Examples of java.util.Random.nextBoolean()

java.util.Random.nextBoolean()
Returns the next pseudorandom, uniformly distributed {@code boolean} value from this random number generator'ssequence. The general contract of {@code nextBoolean} is that one{@code boolean} value is pseudorandomly generated and returned. Thevalues {@code true} and {@code false} are produced with(approximately) equal probability.
The method {@code nextBoolean} is implemented by class {@code Random}as if by:
```
  {@code}public boolean nextBoolean()  return next(1) != 0; }}
```
@return the next pseudorandom, uniformly distributed{@code boolean} value from this random number generator'ssequence @since 1.2

   public void process() throws Exception {
      if (hosts == null)
         return;
      Random random = new Random();
      for (int i=0; i < hosts.length; i++) {
         if (random.nextBoolean())
            continue;
         global.getProperty().set("filewatcher.test.counter", "" + (++counter));
         global.getProperty().set("filewatcher.test.hostname", hosts[i]);
         String tmp = replace(content);
         if (tmp != null) {

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      float[] orig = new float[16*1024*1024];
      MutableSparseFloatArray arr = new MutableSparseFloatArray(new float[orig.length]);
      
      for (int i = 0; i < 32*1024; i++) {
        int idx = r.nextInt(orig.length);
        if (r.nextBoolean()) {
          assertTrue("orig "+orig[idx]+" not the same as arr "+arr.get(idx)+" at idx="+idx, orig[idx] == arr.get(idx));
        } else {
          float val = r.nextFloat();
          orig[idx] = val;
          arr.set(idx, val);

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  testBooleanArray(new boolean[] { false });
  testBooleanArray(new boolean[] { true, false });
  Random rand = new Random();
  boolean[] v = new boolean[100];
  for (int i = 0; i < v.length; ++i) {
      v[i] = rand.nextBoolean();
  }
  testBooleanArray(v);
    }


    public void testBooleanArray(boolean[] v) throws Exception {

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    {
        Random r = new Random(count);
        float[] result = new float[count];
        for (int i = 0; i < count; ++i) {
            float f = r.nextFloat();
            result[i] = r.nextBoolean() ? -f : f;
        }
        return result;
    }


    private double[] doubleArray(int count)

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    {
        Random r = new Random(count);
        double[] result = new double[count];
        for (int i = 0; i < count; ++i) {
            double d = r.nextDouble();
            result[i] = r.nextBoolean() ? -d : d;
        }
        return result;
    }


    private String buildDoc(Object dataArray, boolean addNoise)

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        Random r = new Random(Array.get(dataArray, 0).hashCode());
        for (int i = 0; i < len; ++i) {
            Object value = Array.get(dataArray, i).toString();
            sb.append(value);
            // Let's add 25% of time
            if (addNoise && r.nextBoolean() && r.nextBoolean()) {
                if (r.nextBoolean()) {
                    sb.append("<!-- comment: "+value+" -->");
                } else {
                    sb.append("<?pi "+value+"?>");
                }

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        Random r = new Random(Array.get(dataArray, 0).hashCode());
        for (int i = 0; i < len; ++i) {
            Object value = Array.get(dataArray, i).toString();
            sb.append(value);
            // Let's add 25% of time
            if (addNoise && r.nextBoolean() && r.nextBoolean()) {
                if (r.nextBoolean()) {
                    sb.append("<!-- comment: "+value+" -->");
                } else {
                    sb.append("<?pi "+value+"?>");
                }

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        for (int i = 0; i < len; ++i) {
            Object value = Array.get(dataArray, i).toString();
            sb.append(value);
            // Let's add 25% of time
            if (addNoise && r.nextBoolean() && r.nextBoolean()) {
                if (r.nextBoolean()) {
                    sb.append("<!-- comment: "+value+" -->");
                } else {
                    sb.append("<?pi "+value+"?>");
                }
            }

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                int len = ARRAY_TEST_LENGTHS[i-1];
                data = new float[len];
                for (int ix = 0; ix < len; ++ix) {
                    // Need to scale: nextFloat is [0.0, 1.0[
                    float value = rnd.nextFloat();
                    if (rnd.nextBoolean()) {
                        value = (float) (value * rnd.nextInt());
                    }
                    if (rnd.nextBoolean()) {
                        value = -value;
                    }

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                    // Need to scale: nextFloat is [0.0, 1.0[
                    float value = rnd.nextFloat();
                    if (rnd.nextBoolean()) {
                        value = (float) (value * rnd.nextInt());
                    }
                    if (rnd.nextBoolean()) {
                        value = -value;
                    }
                    data[ix] = value;
                }
            }

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