Java Reference
In-Depth Information
public int
nextInt(int ceiling)
Like
nextInt()
, but returns a value that is at least zero and is
less than the value
ceiling
. Use this instead of using
nextInt()
and
%
to get a range. If
ceiling
is negative, an
IllegalArgu-
mentException
is thrown.
public long
nextLong()
Returns a pseudorandom uniformly distributed
long
value
between
Long.MIN_VALUE
and
Long.MAX_VALUE
, inclusive.
public void
nextBytes(byte[] buf)
Fills the array
buf
with random bytes.
public float
nextFloat()
Returns a pseudorandom uniformly distributed
float
value
between
0.0f
(inclusive) and
1.0f
(exclusive).
public double
nextdouble()
Returns a pseudorandom uniformly distributed
double
value
between
0.0
(inclusive) and
1.0
(exclusive).
public double
nextGaussian()
Returns a pseudorandom Gaussian-distributed
double
value
with mean of 0.0 and standard deviation of 1.0.
All the
next
Type
methods use the protected method
next
. The
next
meth-
od takes an
int
that represents the number of random bits to produce
(between 1 and 32) and returns an
int
with that many bits. These ran-
dom bits are then converted to the requested type. For example,
nextInt
