testrandom.java

来自「Java the UML Way 书中所有源码」· Java 代码 · 共 22 行

/*
 * TestRandom.java   E.L. 2001-05-21
 */ 
import java.util.Random; // NB!
class TestRandom {
  public static void main(String[] args) {
    final int limit = 100; // wants numbers in the range [0..99].
    final int seed = 17; // the seed should be a prime number
    Random randomGen = new Random(seed); 
    int number1 = randomGen.nextInt(limit);
    int number2 = randomGen.nextInt(limit);
    int number3 = randomGen.nextInt(limit);
    int number4 = randomGen.nextInt(limit);
    System.out.println(
      "Here you have four random numbers in the range [0.." + (limit - 1) + "]: " +
                            number1 + " " + number2 + " " + number3 + " " + number4);
  } 
} 

/* Example Run:
Here you have four random numbers in the range [0..99]: 76 20 94 16
*/