?? garagedoor.java
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package headfirst.command.simpleremote;public class GarageDoor { public GarageDoor() { } public void up() { System.out.println("Garage Door is Open"); } public void down() { System.out.println("Garage Door is Closed"); } public void stop() { System.out.println("Garage Door is Stopped"); } public void lightOn() { System.out.println("Garage light is on"); } public void lightOff() { System.out.println("Garage light is off"); }}?? 快捷鍵說明
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