请问使用JAVA如何编写一个Animal类？

Question

属性：private String type;//动物的类型构造器://用于初始化私有属性type.方法：public String toString()//返回动物类型信息public void sound()//输出动物的叫声信息

Answer 1

public class Animal {
private String type="";
public Animal(){
type="tiger";
}
public Animal(String type){
this.type = type;
}

public String toString(){
return type;
}

public void sound(){
System.out.println(type+"发出了叫声....");
}

public static void main(String[] args) {
Animal a1 = new Animal();//无参的
System.out.println(a1);
a1.sound();

Animal a2 = new Animal("panda");//无参的
System.out.println(a2);
a2.sound();
}
}
LZ咋连分都不给啊，呵呵，好了可以运行了

Answer 2

public class Animal{
private String type;
public UserBean() {//默认构造器
type="狗"
}
public UserBean(String typeStr) {
type=typeStr;
}
public String toString(){
return type;
}
public void sound(){
System.out.println("类型为"+type+"的叫声信息为*********");
}
}