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Android Build a Simple Android App (retired 2014) Learning the Language Objects and Random Numbers

habib kazemi
habib kazemi
2,041 Points
Posted by habib kazemi
habib kazemi
2,041 Points

I can't understand this code

I down't know what is Random() ? is this a method Random randomGenetor = new Random(); If Yes so there is not method type, ... .

2 Answers

Matheus G Oliveira
Matheus G Oliveira
9,682 Points
Matheus G Oliveira
Matheus G Oliveira
9,682 Points

Random is a method that generates random items... for example:

you have an array arrayList ={"sunday","monday", "tuesday", "wednesday"} and you want to have random days, you use this to generate it

by the way, having Random randomGenerator = new Random()

is a constructor you name Random as randomGenerator and create a new object using the constructor Random()

habib kazemi
habib kazemi
2,041 Points
habib kazemi
habib kazemi
2,041 Points

And what about this code can you explain it.

int randomnumber = randomGenerator.nextInt(3);
Matheus G Oliveira
Matheus G Oliveira
9,682 Points
Matheus G Oliveira
Matheus G Oliveira
9,682 Points

That means that you are setting the maximum random numbers to 3.

On this case you will get a result between 0, 1, 2. It means that it will randomize 3 numbers, from 0 to 2.

If you set the nextInt(10), you will get a result between 0, 1, 2, 3, 4, 5, 6, 7, 8, 9)

Got it?