Let's say that I have the following set up:
private String one = "abc";
private String two = "def";
private String three = "ghi";
etc.
I want to write a method that returns a random variable, one of the however many I have declared at the top of the class. Is there an easy way to do this?
What about this simple method? Or do it with a Collection if you have too many elements.
public String getRandomString(){
Random r = new Random();
int i = r.nextInt()%3;
switch (i) {
case 0:
return one;
case 1:
return two;
case 2:
return three;
default:
break;
}
}
Two options:
You could put them into a list and select a random list element by accessing a list element with a random number (You would of course have to check if the random number is inside the range of the list index).
If you need actual example code, comment on this ;-)
The interesting function you would need is math.random()
The easiest and the most convenient way would be to use array instead of variables and then get a random integer and then use this array's index.
You can put them all in a List and then pick a random number between zero and the list size, and pick that element out of the list.
Put your variables in an array or list and use a random number generator to select a random element in that collection.
I think the accepted solution might return negative values
Math.Abs()r.nextInt(3)
