arrayclassobj.java

来自「thinking in Java书中 的源代码」· Java 代码 · 共 22 行

//: c04:ArrayClassObj.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
// Creating an array of nonprimitive objects.
import java.util.*;

public class ArrayClassObj {
  static Random rand = new Random();
  static int pRand(int mod) {
    return Math.abs(rand.nextInt()) % mod + 1;
  }
  public static void main(String[] args) {
    Integer[] a = new Integer[pRand(20)];
    System.out.println(
      "length of a = " + a.length);
    for(int i = 0; i < a.length; i++) {
      a[i] = new Integer(pRand(500));
      System.out.println(
        "a[" + i + "] = " + a[i]);
    }
  }
} ///:~