Examples of java.util.Random.nextFloat()

java.util.Random.nextFloat()
Returns the next pseudorandom, uniformly distributed {@code float}value between {@code 0.0} and {@code 1.0} from this randomnumber generator's sequence.
The general contract of {@code nextFloat} is that one{@code float} value, chosen (approximately) uniformly from therange {@code 0.0f} (inclusive) to {@code 1.0f} (exclusive), ispseudorandomly generated and returned. All 2²⁴ possible {@code float} valuesof the form m x 2^-24, where m is a positive integer less than 2²⁴ , are produced with (approximately) equal probability.
The method {@code nextFloat} is implemented by class {@code Random}as if by:
```
  {@code}public float nextFloat()  return next(24) / ((float)(1 << 24)); }}
```
The hedge "approximately" is used in the foregoing description only because the next method is only approximately an unbiased source of independently chosen bits. If it were a perfect source of randomly chosen bits, then the algorithm shown would choose {@code float}values from the stated range with perfect uniformity.
[In early versions of Java, the result was incorrectly calculated as:
```
  {@code return next(30) / ((float)(1 << 30));}
```
This might seem to be equivalent, if not better, but in fact it introduced a slight nonuniformity because of the bias in the rounding of floating-point numbers: it was slightly more likely that the low-order bit of the significand would be 0 than that it would be 1.] @return the next pseudorandom, uniformly distributed {@code float}value between {@code 0.0} and {@code 1.0} from thisrandom number generator's sequence

      arr = new MutableSparseFloatArray(new float[orig.length]);
      int[] idxs = new int[1024 * 1024];
      float[] vals = new float[idxs.length];
      for (int i = 0; i < idxs.length; i++) {
        idxs[i] = r.nextInt(orig.length);
        vals[i] = r.nextFloat();
      }


      long markTime = System.currentTimeMillis();
      for (int i = 0; i < idxs.length; i++) {
        orig[i] = vals[i];

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    try {
      float[] orig = new float[32 * 1024 * 1024];
      float density = 0.4f;
      Random rand = new Random(SEED);
      int idx = 0;
      while (rand.nextFloat() > density) {
        idx++;
      }
      int count = 0;
      while (idx < orig.length) {
        orig[idx] = rand.nextFloat();

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      while (rand.nextFloat() > density) {
        idx++;
      }
      int count = 0;
      while (idx < orig.length) {
        orig[idx] = rand.nextFloat();
        count++;
        idx += 1;
        while (rand.nextDouble() > density) {
          idx++;
        }

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        while (iter.hasNext()) {
            Entity target = (Entity) iter.next();
            if (target.isEntityAlive()) {
                if (target.worldObj.getTotalWorldTime() % 5 == 0) {
                    Random rand = new Random();
                    target.setVelocity(rand.nextFloat() - .5, rand.nextFloat(), rand.nextFloat() - .5);
                    ThaumicTinkerer.tcProxy.burst(target.worldObj, target.posX, target.posY, target.posZ, .5F);
                }
            }
            if (target.worldObj.getTotalWorldTime() > airPotionHit.get(target) + 20) {
                iter.remove();

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        while (iter.hasNext()) {
            Entity target = (Entity) iter.next();
            if (target.isEntityAlive()) {
                if (target.worldObj.getTotalWorldTime() % 5 == 0) {
                    Random rand = new Random();
                    target.setVelocity(rand.nextFloat() - .5, rand.nextFloat(), rand.nextFloat() - .5);
                    ThaumicTinkerer.tcProxy.burst(target.worldObj, target.posX, target.posY, target.posZ, .5F);
                }
            }
            if (target.worldObj.getTotalWorldTime() > airPotionHit.get(target) + 20) {
                iter.remove();

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        while (iter.hasNext()) {
            Entity target = (Entity) iter.next();
            if (target.isEntityAlive()) {
                if (target.worldObj.getTotalWorldTime() % 5 == 0) {
                    Random rand = new Random();
                    target.setVelocity(rand.nextFloat() - .5, rand.nextFloat(), rand.nextFloat() - .5);
                    ThaumicTinkerer.tcProxy.burst(target.worldObj, target.posX, target.posY, target.posZ, .5F);
                }
            }
            if (target.worldObj.getTotalWorldTime() > airPotionHit.get(target) + 20) {
                iter.remove();

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                if (target.worldObj.getTotalWorldTime() % 5 == 0) {
                    Random rand = new Random();
                    target.setFire(6);


                    for (int i = 0; i < 30; i++) {
                        double theta = rand.nextFloat() * 2 * Math.PI;


                        double phi = rand.nextFloat() * 2 * Math.PI;
                        double r = 2.5;


                        double x = r * Math.sin(theta) * Math.cos(phi);

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                    target.setFire(6);


                    for (int i = 0; i < 30; i++) {
                        double theta = rand.nextFloat() * 2 * Math.PI;


                        double phi = rand.nextFloat() * 2 * Math.PI;
                        double r = 2.5;


                        double x = r * Math.sin(theta) * Math.cos(phi);


                        double y = r * Math.sin(theta) * Math.sin(phi);

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        Point[] points = new Point[3000000];
        Random random = new Random();
        for (int i = 0; i < points.length; i++) {
            // I altered the zFar variable to adapt to the points.length.
            // Points, no matter how much, now appear evenly distributed along the screen
            points[i] = new Point((random.nextFloat() - 0.5f) * 100f, (random.nextFloat() - 0.5f) * 100f,
                    random.nextInt(points.length / 50) - points.length / 50);
        }


        /**
         * Display lists

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        Point[] points = new Point[3000000];
        Random random = new Random();
        for (int i = 0; i < points.length; i++) {
            // I altered the zFar variable to adapt to the points.length.
            // Points, no matter how much, now appear evenly distributed along the screen
            points[i] = new Point((random.nextFloat() - 0.5f) * 100f, (random.nextFloat() - 0.5f) * 100f,
                    random.nextInt(points.length / 50) - points.length / 50);
        }


        /**
         * Display lists

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