类适配器模式

package com.life.design.adaper.classadapter;  public interface IVoltage5V {     public int output5V(); }

package com.life.design.adaper.classadapter;  public class Voltage220V {     public int output220V() {         int src = 220;         System.out.println(电压= + src + 伏);         return src;     } }

package com.life.design.adaper.classadapter;  public class VoltageAdapter extends Voltage220V implements IVoltage5V {      @Override     public int output5V() {         int srcV = output220V();         int dstV = srcV / 44 ;         return dstV;     } }