I want to receive a random result based on their chance.

For example if there are 5 cases:

A = 50%, B = 37,5%, C = 10%, D = 2,4%, E = 0,1%

What would the correct algorithm be to calculate their percentage?

I reviewed a few posts here on StackOverflow but I could not find one that uses floating numbers, that’s why I’m creating this post.

I tried using ThreadLocalRandom:

int random = ThreadLocalRandom.current().nextInt(100);

Based on the integer I’d return the given result. This works fine for whole number percentages, but fails with floating ones.

I experience the sam result using Math.random(), obviously.

Is it correct for me to use this in this case or is there are better solution?:

ThreadLocalRandom.current().nextDouble(100.0);