对象适配器模式

package com.life.design.adaper.objectadapter;

public interface IVoltage5V {
    public int output5V();
}

package com.life.design.adaper.objectadapter;

public class Voltage220V {
    public int output220V() {
        int src = 220;
        System.out.println("电压=" + src + "伏");
        return src;
    }
}

package com.life.design.adaper.objectadapter;

public class VoltageAdapter  implements IVoltage5V {

    private Voltage220V voltage220V;
    
    public VoltageAdapter(Voltage220V voltage220v) {
        
        this.voltage220V = voltage220v;
    }

    @Override
    public int output5V() {
        
        int dst = 0;
        if(null != voltage220V) {
            int src = voltage220V.output220V();
            System.out.println("使用对象适配器，进行适配~~");
            dst = src / 44;
            System.out.println("适配完成，输出的电压为=" + dst);
        }
        return dst;
    }
}