args not working in if statement

I want to check when the user has entered in a question mark (or "/?" or "-?") as an argument.
This is my code:

if (args[0] == "/?" || args[0] == "-?" || args[0] == "?") {
   System.out.println("help stuff")
}

I passed "/?" as an argument and nothing happened. I added some debugging code:

System.out.println(args[0]);
if (args[0] == "/?" || args[0] == "-?" || args[0] == "?") {
   System.out.println("help stuff")
} else {
   System.out.println("this text shouldnt be printed");
}

Once again I pass "/?" as an argument and get back:
/?
this text shouldnt be printed

Please help me.
Thanks in advance.