Setting the seed of a random generator in Java
A seed is a number or vector assigned to a pseudo-random generator to generate the desired sequence of random values. If we pass the same seed, it will generate the same sequence. We usually assign the seed as the system time. In this way, it will generate a different sequence every time.
In this article, we will discuss how to generate random numbers using seeds in Java.
setSeed()Use the function to set the seed for random numbers
in Java
The Random class's setSeed()seed_seed function uses a single long seed to set the seed of the random number generator. We Randomuse it with the object.
For example,
import java.util.Random;
public class JavaRandomSetSeedDemo {
public static void main(String[] args) {
Random randomobj = new Random();
long seed = 100;
randomobj.setSeed(seed);
System.out.println("Random Integer value : " + randomobj.nextInt());
}
}
Output:
Random Integer value : -1193959466
RandomUsing the constructor to set the seed for random numbers
in Java
We can also call the zero-argument constructor to get a different seed each time. The seed is the starting value for the internal state of the pseudo-random number generator and nextInt()is handled by the method.
For example,
import java.util.Random;
public class RadomSeeddemo {
public static void main(String[] args) {
Random randomobj1 = new Random(100);
System.out.println("Random number using the Constructor");
System.out.println(randomobj1.nextInt());
}
}
Output:
Random number using the Constructor
-1193959466
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