Java™ How To Program (Early Objects), Tenth Edition

Rules for Forming Structured Programs

Figure 5.22 shows the rules for forming structured programs. The rules assume that action states may be used to indicate any action. The rules also assume that we begin with the simplest activity diagram (Fig. 5.23) consisting of only an initial state, an action state, a final state and transition arrows.

Fig. 5.22 | Rules for forming structured programs.

Fig. 5.23 | Simplest activity diagram.

Applying the rules in Fig. 5.22 always results in a properly structured activity diagram with a neat, building-block ...