java编程急急急
packagecom.common;
publicinterfaceDogState{
publicvoidshowState();
packagecom.common;
publicclassDog{
privateDogStatestate;
publicDogStategetState(){
returnstate;
publicvoidsetState(DogStatestate){
this.state=state;
publicvoidshow(){
state.showState();
packagecom.common.impl;
importcom.common.DogState;
publicclassMeetingDogsimplementsDogState{
publicvoidshowState(){
System.out.println("狗的状态为:上前，嬉闹");
packagecom.common.impl;
importcom.common.DogState;
publicclassMeetingEnemyimplementsDogState{
publicvoidshowState(){
System.out.println("狗的状态为:吠叫，很可能咬敌人");
packagecom.common.impl;
importcom.common.DogState;
publicclassMeetingFriendsimplementsDogState{
publicvoidshowState(){
System.out.println("狗的状态为:摇摇尾巴，表示欢迎");
packagecom.common.impl;
importcom.common.DogState;
publicclassMeetingHostimplementsDogState{
publicvoidshowState(){
System.out.println("狗的状态为:开心");
packagecom.common;
importcom.common.impl.MeetingDogs;
importcom.common.impl.MeetingEnemy;
importcom.common.impl.MeetingFriends;
importcom.common.impl.MeetingHost;
publicclassTest{
*@paramargs
publicstaticvoidmain(String[]args){
//TODOAuto-generatedmethodstub
Dogdog=newDog();
dog.setState(newMeetingDogs());
dog.show();
dog.setState(newMeetingEnemy());
dog.show();
dog.setState(newMeetingFriends());
dog.show();
dog.setState(newMeetingHost());
dog.show();
这一题java编程题怎么做啊，有点急
代码如下，
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packagecom.domax.org.abs;
publicabstractclassAnimal{
protectedStringanimalName;
publicabstractvoidhowl();
publicclassCatextendsAnimal
publicCat(StringanimalName){
super();
this.animalName=animalName;
publicvoidhowl(){
System.out.println(this.animalName+"正在喵喵");
publicclassDogextendsAnimal{
publicDog(StringanimalName){
super();
this.animalName=animalName;
@Override
publicvoidhowl(){
//TODOAuto-generatedmethodstub
System.out.println(this.animalName+"正在旺旺");
packagecom.domax.org.abs;
publicclassTest{
publicstaticvoidmain(String[]args){
Catcat=newCat("小猫");
Dogdog=newDog("小狗");
cat.howl();
dog.howl();
