先点击看看题目要求：uml 类图

适配器代码实现

class Address{   public void street(){System.out.PRintln("正常街道");}   public void zip(){System.out.println("正常邮编");}   public void cITy(){System.out.println("正常地方");} }  class DutchAddress{   public void straat(){System.out.println("荷兰语街道");}   public void postcode(){System.out.println("荷兰语邮编");}   public void plaats(){System.out.println("荷兰语地方");} }  class DutchAddressAdapter extends DutchAddress{   private Address address;   public DutchAddressAdapter(Address addr){     this.address=addr;   }   public void straat(){     this.address.street();   }   public void postcode(){     this.address.zip();   }   public void plaats(){     this.address.city();   } }  public class test {   public static void main(String[] args){     Address addr=new Address();     DutchAddress addrAdapter=new DutchAddressAdapter(addr);     System.out.println("n THE DUCTH ADDRESSn");     testDutch(addrAdapter);   }   static void testDutch(DutchAddress addr){     addr.straat();     addr.postcode();     addr.plaats();   } } 

附赠一个画圆和画方的

class Yuan{     public void pp(String str){         System.out.println("我只能pp画圆");         System.out.println("圆打出来个 "+str);         } }  class fang{     public void ppp(String str){         System.out.println("我只能ppp画方");         System.out.println("方打出来个 "+str);         } } class fangAdapter extends Yuan{          private Fang fang;     public fangAdapter (Fang fang){         System.out.println("我能用pp画圆，也能用ppp画方");         this.fang=fang;     }     public void ppp(String str){         this.fang.ppp(str);     } }  public class RoundSquere {      public static void main(String[] args){                  Fang F1=new Fang();                  fangAdapter fy=new fangAdapter(f1);                  fy.pp("hhh");         fy.ppp("ooo");              } }