Higher integer, greater chance

A quick question, really.

I am creating a plugin where you can rank up in levels by mining stone and such. There are random chances you can get special stuff from mining, but I can't think of any way to tie in the player's level directly into the chance of getting special stuff. Currently,

Code:java

int chance = 1 + (int)(Math.random() * ((50 - 1) + 1));
if(chance == 1){
player.getWorld().dropItem(player.getLocation(), new ItemStack(event.getBlock().getType()));
prplayer.sendMessage(player, "You have received double drops from mining!");
}

is what I use to do the chance, which has nothing to do with their level.

So, to get their level, I just do "prplayer.getSkillLevel(player.getName(), Skill.Mining)". How would I tie that into the chance, so the higher the skill level, the greater the chance they get "double drops"?

 

Random.nextInt(level) == 0
nextInt is not static, you need to make an instance of Random.

 

What about generating a random int between 0 and 99 (for example), and then award double drops if it is below their level?

eg. Level 5 - only double drops if random int < 5
Level 30 - double drops if random int <30 : higher chance