Java 6 Illuminated: An Active Learning Approach, 2nd Edition

9.5 Programming Activity 1: Working with Two-Dimensional Arrays 605

Figure 9.14

The Graphics Window

When the Application

Begins

Troubleshooting

If your method implementation does not animate, check these tips:

■

Verify that the last statement in your single for loop or inner for

loop is a call to the animate method and that you passed the appro-

priate arguments. For example:

animate( row, column );

■

Verify that your exit conditions for your for loops are correct.

Sometimes the exit condition depends on the length of the array

(i.e., the number of rows in the array), and sometimes it depends

on the number of columns in the current row of the array.

DISCUSSION ...