|
|
|
Program: Basic random number generator.
| Description: |
|
Many times we need to generate sequence of numbers. It is not a problem to generate sequence of
numbers. But some times we need to generate random numbers. In java we can generate random numbers by using
Random class. By using Random class, we can generate random integers, long numbers and double values. Below example
shows how to generate random numbers using Random class.
|
| Code: |
package com.java2novice.random;
import java.util.Random;
public class MyBasicRandom {
public static void main(String a[]){
Random rand = new Random();
System.out.println("Random Integers:");
System.out.println(rand.nextInt());
System.out.println(rand.nextInt());
System.out.println(rand.nextInt());
System.out.println("Random Double Numbers:");
System.out.println(rand.nextDouble());
System.out.println(rand.nextDouble());
System.out.println(rand.nextDouble());
System.out.println("Random Long Numbers:");
System.out.println(rand.nextLong());
System.out.println(rand.nextLong());
System.out.println(rand.nextLong());
}
}
|
|
| Output: |
Random Integers:
1400247241
953993278
830962592
Random Double Numbers:
0.19841760470907022
0.32964328277263866
0.4624594748136943
Random Long Numbers:
4925512194471935414
2115815340178756456
4896741386551752249
|
|
|
|
|
|
|
|
List of Random class sample programs:- Basic random number generator.
- How to generate random numbers in the given range?
- How to generate same random sequence everytime?
- How to change Random class seed value?
- How to create random string with random characters?
|
|
|
What is System.out in Java
In System.out, out is an instance of PrintStream. It is a static member variable in
System class. This is called standard output stream, connected to console.
Good judgment comes from experience, and experience comes from bad judgment.
-- Barry LePatner
|
