//Sample23_05.java
class Sample23_05{

  public static void main(String[] args){

      int[][] arrays = new int[3][];

      System.out.println("arrays.length = " + arrays.length);

      System.out.println("arrays[0].length = " + arrays[0]);
      System.out.println("arrays[1].length = " + arrays[1]);
      System.out.println("arrays[2].length = " + arrays[2]);

      arrays[0] = new int[2];
      System.out.println("arrays[0].length = " + arrays[0].length);
      arrays[0][0] = 0;
      arrays[0][1] = 1;

      arrays[1] = new int[3];
      System.out.println("arrays[1].length = " + arrays[1].length);
      arrays[1][0] = 10;
      arrays[1][1] = 11;
      arrays[1][2] = 12;

      arrays[2] = new int[4];
      System.out.println("arrays[2].length = " + arrays[2].length);
      arrays[2][0] = 20;
      arrays[2][1] = 21;
      arrays[2][2] = 22;
      arrays[2][3] = 23;

      System.out.println();
      System.out.println("arrays[0][0] = " + arrays[0][0]);
      System.out.println("arrays[0][1] = " + arrays[0][1]);
      System.out.println("arrays[1][0] = " + arrays[1][0]);
      System.out.println("arrays[1][1] = " + arrays[1][1]);
      System.out.println("arrays[1][2] = " + arrays[1][2]);
      System.out.println("arrays[2][0] = " + arrays[2][0]);
      System.out.println("arrays[2][1] = " + arrays[2][1]);
      System.out.println("arrays[2][2] = " + arrays[2][2]);
      System.out.println("arrays[2][3] = " + arrays[2][3]);
    }
}