Dog

public class Dog {
private boolean isMammal;//是否哺乳动物
private boolean isCarnivorous;//是否食肉动物
private int numOfLegs;//有几条腿
private int mood;//情绪； public void setMammal(boolean isMammal) { this.isMammal = isMammal; } public boolean isMammal() { return isMammal; } public boolean isCarnivorous() { return isCarnivorous; } public void setCarnivorous(boolean isCarnivorous) { this.isCarnivorous = isCarnivorous; } public int getNumOfLegs() { return numOfLegs;  } public void setNumOfLegs(int numOfLegs) { this.numOfLegs = numOfLegs;  }



















public int getMood() {
return mood;
 }
public void setMood(int mood) {
this.mood = mood;
 }
 //with parameters;
public Dog(boolean isMammal, boolean isCarnivorous, int numOfLegs, int mood) {
this.isMammal = isMammal;
this.isCarnivorous = isCarnivorous;
this.numOfLegs = numOfLegs;
this.mood = mood;
}


//mood;
  public String sayHello(int mood){
 this.setMood(mood);
 switch(this.mood){
      case 1: return("Woooooooooooo");//When you're happy, you bark and bark;  case 2: return("Woooooooo");//When you're unhappy, you woohoo;  default: return("Shake "Wag the tail");//Wag the tail in general; } }







//无参数；
   public void Dog() {
   this.isCarnivorous=true;
   this.isMammal=true;
   this.mood=4;
   this.numOfLegs=1; } }