10 out of 100 % chances??

Hellau, I'm BeastCraft3. Am wondering a qustion for quite some time now.
I recently made a plugin with 10 commands. When someone walk on sponge one of the commands will be executed. but how do I make it so it's a 10% chance that you it either do /command 1, /command 2, /command 3 .....etc
I think you understand it. And if your wondering which commands I made it is a warp plugin.

HOpe you understand what I need, if not feel free to ask. k bye!

 

@BeastCraft3 http://docs.oracle.com/javase/7/docs/api/java/util/Random.html

 

Code:

if (new Random().nextInt(100) <= 10) {

 

@FisheyLP
like

Code:

EventHandler
Check if walking on sponge
if (new Random().nextInt(100) <= 10) {
Commands???
}

 

@FisheyLP Or just get a random number 0-9 and get that entry from an ArrayList.

 

@nverdier
But will this work?

 

@BeastCraft3
1) Store all of the commands in an ArrayList.
2) When the user walks on sponge.
3) Get a random integer from 0-9, and get the command at the random index from the ArrayList.
4) Run the command.

 

Or just arraylist.get(new Random().nextInt(arraylist.size());

Which gets a random object of the arraylist

 

@FisheyLP Which is what I said. Except I was using 0-9 because that's what the OP said.

 

@nverdier @FisheyLP
ok, I havent coded for like 6 months, any more help in code in general? like a small template I could get using the
//todo ??

 

new Random().nextInt(x) returns a number between 0 and x-1.
If x is (for example) 10, it generates a random number between 0 and 9.
And if you want to check the % use this:
if (new Random().nextInt(100) <= x) {
Where x is the chance in %, that the if-condition will be true.
If you want to get a random object of a ArrayList, you can use this:
.get(index) //starts with 0
.size() //returns the amount of objects in the ArrayList
You just need to get the object with the index (random from 0 to ArrayList size)
Done

 

@FisheyLP @FisheyLP
Sorry for being a little bad here, but can you help me with the Arraylist stuff, like how do I store the commands in it?

 

@BeastCraft3 I suggest you learn Java...

 

@FisheyLP
Please?

 

@BeastCraft3

 

These are all the constructors you will need.

Code:

Player.chat("/examplecommand 1");
// Or you could use dispatch command but whatever.

new Random().nextInt(10);

@EventHandler
public void onMove(PlayerMoveEvent evt)

I'm just inferring you know the basics of Java and the basics of an event handler...

 

@stormneo7
I know how to do the that ;/ I'm just asking how I store commands in an arraylist?!

 

@BeastCraft3

@stormneo7 Do you know what a constructor is?

 

Commands are stored using the Command variable but could be stored using Strings.
http://docs.oracle.com/javase/7/docs/api/java/util/ArrayList.html

Variables used to create an object or instructions. What kind of question is this...?

 

No.

 

Little tutorial:

Show Spoiler Hide Spoiler

1. Create a new array:

Code:java

String[] commands = {"/command1", "/command2", "/command3"};

2. Get a random Object (String) of the array:

Code:java

String random = commands[new Random().nextInt(commands.length)];

3. Learn java because you don't even know what an array is / how to define one.

 

@FisheyLP Subtract one from the length though.

 

@nverdier No.

And array[x] starts with the object at 0th place.
Example:

Code:java

String[] array = {"String 1", "String 2", "String 3"};
System.out.println(array.length); //Output: 3
System.out.println(array[0]); //Output: String 1
System.out.println(array[2]); //Output: String 3

 

Constructing a new random every time will just end up with the same results. Use ThreadLocalRandom or Math#random

 

@FisheyLP Riiiiigggghhttttt, sorry.

 

No? What is it then?

 

@1Rogue
No. .nextInt(x) always returns a new generated random number.

 

@stormneo7 Look it up. You're somewhat close, but not there.

 

Whoops, thought you were setting the seed too.

It's still a terrible idea, you don't need to instantiate a new Random for every single random number when you can just use a single ThreadLocal instance

 

Generating a new Random every time, is 5 times slower than having a single Random defined. (tested it )