适配器就是将一个类适配成另一个类 示例代码:

public interface Dog {	void wangwang();}public class Husky implements Dog{	@Override	public void wangwang() {		System.out.println("husky wangwang");	}}public interface Cat {	void miaomiao();}public class LittleCat implements Cat{	public void miaomiao(){		System.out.println("miaomiao");	}}public class CatAdapter implements Dog{	private Cat cat;	public CatAdapter(Cat cat) {		this.cat = cat;	}	@Override	public void wangwang() {		cat.miaomiao();	}}public class Test3 {	public static void main(String[] args) {		Cat cat = new LittleCat();		Dog dog = new CatAdapter(cat);		dog.wangwang();	}}复制代码