1D Smooth Noise Function with Seed

Question

I cannot for the life of me find a java implementation of 1-dimensional noise with a seed.

I don't even need it to be Perlin/Simplex noise, I just need a simple and fairly smooth noise function. I hate to beg for source code, but I cannot find a good tutorial to write my own noise function because I'm an absolute dunce when it comes to mathematics.

public class Noise {

   int seed;

   public Noise(int seed) {
       this.seed = seed;
   }

   public float noise(float x) {
       // ???
   }
}