java适配器

public class adapterDemo {public static void main(String[] args){PowerA powera = new PowerAimp();powera.start();PowerB powerb = new PowerBimp();adapter ap = new adapter(powerb);ap.start();/*PowerB powerb = new PowerBimp();powerb.start();*/}}class adapter implements PowerA{private PowerB powerb;public adapter(PowerB powerb){this.powerb = powerb;}@Overridepublic void start() {powerb.insert();}}interface PowerA{public void start();}class PowerAimp implements PowerA{public void start(){System.out.println("电源A开始工作");}}interface PowerB{public void insert();}class PowerBimp implements PowerB{public void insert(){System.out.println("电源B开始工作");}}