11.5 Recovering from an Exception

In the next example, we read data from a file and use that data to draw a flag. Figure 11.8 shows the contents of the HungarianFlag.txt file. We also show how to catch and recover from an exception; that is, how to enable our program to continue to run when an exception occurs. The data is organized in a similar manner, but it is simpler than what is used by the GIF run-length encoding algorithm:

Figure 11.8The HungarianFlag.-txt File

15000 1.0 0.0 0.0
15000 1.0 1.0 1.0
15000 0.0 1.0 0.0
  • The first line is an integer storing the width of the flag.

  • Each line thereafter contains four numbers. The first number, an integer, stores the number of consecutive pixels (as we go left to right on the flag image) ...

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