Java Utililty Methods Random Int

List of utility methods to do Random Int

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Description

The list of methods to do Random Int are organized into topic(s).

Method

StringrandomHexOfInt(int min, int max)
random Hex Of Int 
int randomInt = randomIntWithMinMax(min, max);
return Integer.toHexString(randomInt);
floatrandomInIntervall(float low, float high)
random In Intervall 
return (float) (Math.random() * (high - low) + low);
doublerandomInt(double arg)
random Int 
double d = Math.ceil(Math.abs(arg));
return 1 + Math.floor(d * Math.random());
intrandomInt(final int max)
Returns a random int value between 0 and (max - 1). 
return (int) (Math.random() * max);
intrandomInt(final int min, final int max)
Generate random integer over range specified by min and max, inclusively. 
return min + (int) (Math.random() * (double) (max - min));
intrandomInt(final int upToNotInclusive)
random Int 
final double rnd = Math.random() * upToNotInclusive;
int ret = (int) Math.floor(rnd);
if (ret == upToNotInclusive) {
    ret = 0;
return ret;
intrandomInt(int ceil)
Returns a random number between 0 and the int you pass 
Random m = new Random(Calendar.getInstance().getTimeInMillis());
Random e = new Random(m.nextInt());
return (int) (e.nextFloat() * (ceil + 1));
intrandomInt(int fromInclusive, int toExclusive)
random Int 
for (int i = 0; i < 1000; ++i) {
    int val = (int) Math.floor(Math.random() * (toExclusive - fromInclusive)) + fromInclusive;
    if (val >= fromInclusive && val < toExclusive) {
        return val;
throw new Error("Cannot generate random number in [" + fromInclusive + ", " + toExclusive + ")");
intrandomInt(int in)
{ method 
if (in <= 1) {
    if (in == 1)
        return (0);
    throw new IllegalArgumentException("randomInt must take a number > 1");
int test = gRandomizer.nextInt(in);
if (test < 0)
    test = -test;
...
intrandomInt(int low, int high)
random Int 
int range = high - low + 1;
return (int) (range * RANDOM.nextDouble()) + low;