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15 lines
271 B
15 lines
271 B
/**
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* 键盘：实现USB接口
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*/
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public class Keyboard implements USB {
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@Override
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public void open() {
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System.out.println("键盘已连接");
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}
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@Override
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public void close() {
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System.out.println("键盘已断开");
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}
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}
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