Master/Reference Architectures and Patterns/hjp5/examples/Listing4308.java


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/* Listing4308.java */

import java.lang.reflect.*;

public class Listing4308
{
  public static void createArray1()
  {
    //Erzeugt ein eindimensionales int-Array
    Object ar = Array.newInstance(Integer.TYPE, 3); 
    int[] iar = (int[])ar;
    for (int i = 0; i < iar.length; ++i) {
      iar[i] = i;
      System.out.println(iar[i]);
    };
  }

  public static void createArray2()
  {
    //Erzeugt ein zweidimensionales String-Array
    Object ar = Array.newInstance(String.class, new int[]{7, 4}); 
    String[][] sar = (String[][])ar;
    for (int i = 0; i < sar.length; ++i) {
      for (int j = 0; j < sar[i].length; ++j) {
        sar[i][j] = "(" + i + "," + j + ")";
        System.out.print(sar[i][j] + " ");
      }
      System.out.println();
    };
  }

  public static void main(String[] args)
  {
    createArray1();
    System.out.println("--");
    createArray2();
  }
}