See if key exists in a .yml file with bukkit plugin

Question

I want to be able to see if a specific key exists in a .yml file so I don't write the same key multiple times in the same file. Here's how it looks right now:

if (config.getString("coins","") == "") {
    p.sendMessage("no coins key ):");
} else {
    p.sendMessage("a coins key :D");
}

Answer 1

config.getString("path", "")

returns "", if the path does not exist. You should be good by checking it like that, but you should use .equals() to compare 2 strings.