?? pizza.java
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import java.util.ArrayList;public abstract class Pizza { String name; String dough; String sauce; ArrayList toppings = new ArrayList(); void prepare() { System.out.println("Preparing " + name); System.out.println("Tossing dough..."); System.out.println("Adding sauce..."); System.out.println("Adding toppings: "); for (int i = 0; i < toppings.size(); i++) { System.out.println(" " + toppings.get(i)); } } void bake() { System.out.println("Bake for 25 minutes at 350"); } void cut() { System.out.println("Cutting the pizza into diagonal slices"); } void box() { System.out.println("Place pizza in official PizzaStore box"); } public String getName() { return name; } public String toString() { StringBuffer display = new StringBuffer(); display.append("---- " + name + " ----\n"); display.append(dough + "\n"); display.append(sauce + "\n"); for (int i = 0; i < toppings.size(); i++) { display.append((String )toppings.get(i) + "\n"); } return display.toString(); }} ?? 快捷鍵說明
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