设计模式之适配器模式

package adaptermode;

/**
 * 适配器模式
 * @author Bingo.Ge
 * @date 2020年5月8日
 */
public class AdapterTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Adaptee adaptee = new Adaptee();
		Target target = new Adapter(adaptee);
		target.output5v();
	}

}


class Adaptee {
	public int output220v() {
		return 220;
	}
}

interface Target {
	int output5v();
}


class Adapter implements Target {
	private Adaptee adaptee;
	
	public Adapter(Adaptee adaptee) {
		this.adaptee = adaptee;
	}

	@Override
	public int output5v() {
		int output220v = adaptee.output220v();
		System.out.println(String.format("原始电压：  %d v -> 输出电压: %d v", output220v, 5));
		
		return 5;
	}
	
}