public class RandomExample
{
public static void main(String[] args)
{
// The Math.random() returns a random number between 0.0 and 1.0
// including 0.0 but not including 1.0.
double number = Math.random();
System.out.println("Generated number: " + number);
// By multiplying Math.random() result with a number will give
// us a range of random number between, for instance 0.0 to 10.0 as
// shown in the example below.
number = Math.random() * 10;
System.out.println("Generated number: " + number);
// To get a random number fron n to m we can add a n value to the
// Math.random() as the lowest number and then multiply it with the
// the highest number. The example below creates random number
// between 100.0 and 200.0.
number = 100 + (Math.random() * 100);
System.out.println("Generated number: " + number);
// Creates an integer random number
int random = 100 + (int)(Math.random() * 100);
System.out.println("Generated number: " + random);
}
}
Below is the output....
Generated number: 0.3568523577844326
Generated number: 7.0804177939495165
Generated number: 176.8077611008594
Generated number: 103
Tuesday, March 6, 2012
How do I create random number in Java?
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