适配器模式

//源类
public class Chazuo {

	public void output() {
		System.out.println("插座可能输出220v或者110v");
	}
}

public interface Adapter {

	public void output5v();
}

public class Phone extends Chazuo implements Adapter{

	public void charging() {
		output5v();
		System.out.println("正在用5v电压充电");
	}

	@Override
	public void output5v() {
		this.output();
		System.out.println("转换成5v");
	}
	public static void main(String[] args) {
		
		Phone phone = new Phone();
		phone.charging();
	}
}