Java How To Program, Late Objects, 11th Edition

... execution time—not at compile time. The elements of a multidimensional array are initialized when the array object is created.

A multidimensional array in which each row has a different number of columns can be created as follows:

int[][] b = new int[2][]; // create 2 rows
b[0] = new int[5]; // create 5 columns for row 0
b[1] = new int[3]; // create 3 columns for row 1

The preceding statements create a two-dimensional array with two rows. Row 0 has five columns, and row 1 has three columns.

6.10.4 Two-Dimensional Array Example: Displaying Element Values

Figure 6.12 demonstrates initializing two-dimensional arrays with array initializers and using nested for loops to traverse the arrays (i.e., manipulate every element of each array). Class InitArray ...