Program 9.4: Fill a three-dimensional array with the sum of the row and column indexes

The syntax for three dimensional arrays is a direct extension of that for two-dimensional arrays. Program 9.4 declares, allocates and initializes a three-dimensional array. The array is filled with the sum of its indexes.

class Fill3DArray {

  public static void main (String args[]) {
  
    int[][][] M;
    M = new int[4][5][3];
  
    for (int row=0; row < 4; row++) {
      for (int col=0; col < 5; col++) {
        for (int ver=0; ver < 3; ver++) {
          M[row][col][ver] = row+col+ver;
        }
      }
    }
    
  }
  
}

You need the additional nested for loop to handle the extra dimension. The syntax for still higher dimensions is similar. Just add another pair of brackets and another dimension.

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