An instance of Random class is used to generate a stream of pseudorandom numbers. The class uses a 48-bit seed, which is modified using a linear congruential formula.
If two instances of Random are created with the same seed, and the same sequence of method calls is made for each, they will generate and return identical sequences of numbers. In order to guarantee this property, particular algorithms are specified for the class Random. Java implementations must use all the algorithms shown here for the class Random, for the sake of absolute portability of Java code. However, subclasses of class Random are permitted to use other algorithms, so long as they adhere to the general contracts for all the methods.
Many applications will find the method Math.random() simpler to use.
If two instances of Random are created with the same seed, and the same sequence of method calls is made for each, they will generate and return identical sequences of numbers. In order to guarantee this property, particular algorithms are specified for the class Random. Java implementations must use all the algorithms shown here for the class Random, for the sake of absolute portability of Java code. However, subclasses of class Random are permitted to use other algorithms, so long as they adhere to the general contracts for all the methods.
Many applications will find the method Math.random() simpler to use.
import java.util.*;
public class GenrateRandomNumber {
public static void main(String[] args) {
Random rand = new Random(System.currentTimeMillis());
int number ;
ArrayList<Integer> al=new ArrayList<Integer>();
for(int i=0; i<10;i++){
number=rand.nextInt(101);
al.add(number);
}
display(al);
}
static void display(ArrayList arr)
{
for(int i=0; i<arr.size(); i++)
System.out.print(arr.get(i)+" ");
}
}