java.util.Random特性

import java.util.Random;

public class RandomExample {
    public static void main(String[] args) {
        Random random = new Random();
        int randomInt = random.nextInt(100);
        long randomLong = random.nextLong();
        float randomFloat = random.nextFloat();
        double randomDouble = random.nextDouble();

        System.out.println("Random Integer: " + randomInt);
        System.out.println("Random Long: " + randomLong);
        System.out.println("Random Float: " + randomFloat);
        System.out.println("Random Double: " + randomDouble);
    }
}