代理模式 自己写的

package test;

public interface Person {
	
	public void work();

}

　　

package test;

public class People implements Person{

	public void work() {
		System.out.println("People work()");
		
	}

}

　　

package test;

public interface Study {

	public void study();
}

　　

package test;

public class GoodStudy implements Study{

	public void study() {
		System.out.println("goodstudy study()");
	}

}

　　适配器：

package test;

public class Adapter implements Person{
	
	private Study study ;
	
	private Person person ;

	public Adapter(Study study2){
		this.study = study2;
	}
	
	public Adapter(People people){
		this.person = person;
	}
	
	public Adapter(Study study, Person person) {
		super();
		this.study = study;
		this.person = person;
	}

	public void work() {
		System.out.println("adapter work()");
		person.work();
		study.study();
	}

	
	

}

　　

package test;

public class AdapterTest {
	
	public static void main(String[] args) {
		Person person = new Adapter(new GoodStudy(),new People());
		person.work();
	}

}

　　结果：

adapter work()
People work()
goodstudy study()

　　Person为新功能 study是需要适配的功能

双向适配器

package test;

public class AdapterTwo implements Person , Study {
	
	private Person person;
	private Study study;
	
	

	public AdapterTwo(Person person, Study study) {
		super();
		this.person = person;
		this.study = study;
	}

	public void study() {
		person.work();
	}

	public void work() {
		study.study();
	}

}

　　

package test;

import org.junit.Test;

public class AdapterTest {
	
	@Test
	public void test() {
		Person person = new Adapter(new GoodStudy(),new People());
		person.work();
　　　　　　　　输出：

adapter work()
People work()
goodstudy study()

	}
	
	@Test
	public void test2(){
		Person person = new AdapterTwo(new People(),new GoodStudy());
		person.work();
　　　　　　　　　
　　　　　　　输出：goodstudy study()

	}

}

　　

类适配器

package test;

import org.junit.Test;

public class AdapterClass extends GoodStudy implements Person {

	public void work() {
		this.study();
	}
	
	@Test
	public void test(){
　　　　　　　　　//方式1
		AdapterClass adapterClass = new AdapterClass();
		adapterClass.work();
　　　　　　　　　//方式2
                work();

	}

}

　　结果：

goodstudy study()