重写equals方法---java

/*** 重写equals方法*/
public class Animal {String color;private int age;public boolean equals(Object obj){Animal other = (Animal)obj;//如果参数是null，直接返回falseif (obj==null){return false;}//如果两个变量指向同一个空间，直接返回falseif (this==obj){return true;}if (this.color.equals(other.color)&&this.age== other.age){return true;}else{return false;}}
}

public class Dog extends Animal{private String nikeName;private String type;public boolean equals(Object obj){Dog other = (Dog)obj;boolean flag = super.equals(obj);if (!flag){return false;}else{if (this.nikeName.equals(other.nikeName)&&this.type.equals(other.type)){return true;}else{return false;}}}
}