Equivalent method in Java for np.random.uniform()
Just use 

Random rnd = new Random();
rnd.nextInt(int boundary);
rnd.nextDouble(double boundary);
rnd.next();

If you want a list of randoms the best way is probably ti write your own little method, just use an array and fill it with a for loop.
I'm trying port a python code into java and am stuck at one place. Is there any method in java that is equivalent to numpy.random.uniform() in python?