Java Random nextGaussian() Method

The nextGaussian() method of Random class returns the next pseudorandom, Gaussian(normally) distributed double value with mean 0.0 and standard deviation 1.0 from the random number generator's sequence.

Syntax

Parameters

Return Value

The nextDouble() method returns the next pseudorandom Gaussian distributed double number with mean 0.0 and standard deviation 1.0.

Example 1

import java.util.Random;

public class JavaRandomNextGaussianExample1 {
public static void main(String[] args) {
        Random random = new Random();
//return the next pseudorandom Gaussian value
Double val = random.nextGaussian();
System.out.println("Random Gaussian value : "+val);
double val1 = random.nextGaussian();
System.out.println("Random Gaussian value : "+val1);
    }
}

Output:

Random Gaussian value : -3.3518483633913014
Random Gaussian value : -1.3767908077736486

Example 2

import java.util.Random;

public class JavaRandomNextGaussianExample2 {
public static void main(String[] args) {
        Random random = new Random();
for (double i=0;i<5;i++) {
//return the next pseudorandom Gaussian value
Double val =random.nextGaussian();
System.out.println(val+" ");
        }
    }
}

Test it Now

Output:

-0.7001112567605307 
-1.0015898772831247 
-0.8454172962601406 
0.12805541404557777 
-0.8336655342786383

Example 3

import java.util.Random;
import java.util.Scanner;
import java.util.concurrent.ArrayBlockingQueue;

public class JavaRandomNextGaussianExample3 {
static  int j=1;
public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
System.out.print("Enter the number of Visitors.");
int capacity = scanner.nextInt();
ArrayBlockingQueue<String> queue = new ArrayBlockingQueue<String>(capacity);
System.out.println("Enter the name of "+capacity+" students.");
for (int i=0;i<capacity;i++){
System.out.print(j++ +" ");String str = scanner.next();
queue.add(str);
        }
j=1;
        Random random = new Random();
for (String xyz :queue) {
            Double val = random.nextGaussian();
if(val<0){
System.out.println("Sorry! "+xyz+" you are out of the game.");
            }
else{
System.out.println("Congratulations! "+xyz+" you are in the game.");
            }
        }
    }
}

Test it Now

Output:

Enter the number of Visitors.4
Enter the name of 4 students.
1 Reema
2 Ravi
3 Rahul
4 Sonia
Sorry! Reema you are out of the game.
Congratulations! Ravi you are in the game.
Sorry! Rahul you are out of the game.
Sorry! Sonia you are out of the game.

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