testarrays2.java

Java编程思想这本书很好

//: c11:TestArrays2.java
// Test and demonstrate Arrays2 utilities.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import com.bruceeckel.util.*;

public class TestArrays2 {
  public static void main(String[] args) {
    int size = 6;
    // Or get the size from the command line:
    if(args.length != 0) {
      size = Integer.parseInt(args[0]);
      if(size < 3) {
        System.out.println("arg must be >= 3");
        System.exit(1);
      }
    }
    boolean[] a1 = new boolean[size];
    byte[] a2 = new byte[size];
    char[] a3 = new char[size];
    short[] a4 = new short[size];
    int[] a5 = new int[size];
    long[] a6 = new long[size];
    float[] a7 = new float[size];
    double[] a8 = new double[size];
    Arrays2.fill(a1, new Arrays2.RandBooleanGenerator());
    System.out.println("a1 = " + Arrays2.toString(a1));
    Arrays2.fill(a2, new Arrays2.RandByteGenerator());
    System.out.println("a2 = " + Arrays2.toString(a2));
    Arrays2.fill(a3, new Arrays2.RandCharGenerator());
    System.out.println("a3 = " + Arrays2.toString(a3));
    Arrays2.fill(a4, new Arrays2.RandShortGenerator());
    System.out.println("a4 = " + Arrays2.toString(a4));
    Arrays2.fill(a5, new Arrays2.RandIntGenerator());
    System.out.println("a5 = " + Arrays2.toString(a5));
    Arrays2.fill(a6, new Arrays2.RandLongGenerator());
    System.out.println("a6 = " + Arrays2.toString(a6));
    Arrays2.fill(a7, new Arrays2.RandFloatGenerator());
    System.out.println("a7 = " + Arrays2.toString(a7));
    Arrays2.fill(a8, new Arrays2.RandDoubleGenerator());
    System.out.println("a8 = " + Arrays2.toString(a8));
  }
} ///:~