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Android Build a Simple Android App Basic Android Programming Using the Random Class

Posted by Jason Gottbrath
Jason Gottbrath
2,054 Points

limiting the range of the random number variable

This quiz really has me stumped. Any help is appreciated. Thank you

RandomTest.java 
Random randomGenerator = new Random(0);
int randomNumber = randomGenerator.nextInt();
String intAsString = ""+randomNumber;

Random randomGenerator = new Random(9);
int randomNumber = randomGenerator.nextInt();
String intAsString = ""+randomNumber;

1 Answer

Benjamin Barslev Nielsen
Benjamin Barslev Nielsen
18,958 Points
Benjamin Barslev Nielsen
Benjamin Barslev Nielsen
18,958 Points

You should instantiate your Random instance without any arguments:

Random randomGenerator = new Random();

The nextInt method can take an int argument n, and then it returns an integer from and including 0 up to but not including n. This means that if we want a random number from 0-9 we can use the statement:

int randomNumber = randomGenerator.nextInt(10);

In this way we do not need a new Random instance each time we want a new range of the random number.