老翟

public class Person{
	
	
	public static void main(String[] args) {
		Person p1 = new Person("p1","femail",15) ;
		Person p2 = new Person("p","mail",  20) ;
		Person p3 = new Person("p","mail",  20) ;
		System.out.println(p1.equals(p2)) ;
		System.out.println(p3.equals(p2)) ;
	}
	
	public Person()  {} ;
	
    public Person(String name, String sex, int age) {
		super();
		this.name = name;
		this.sex = sex;
		this.age = age;
	}

    
    
	public boolean equals(Object otherObject) {
		//检测两个引用是否指向同一对象
		if( this == otherObject ) return true ;
		//检测otherObject是否为空
		if( null == otherObject) return false ;
		//检测是否为同一个类
		if( getClass() != otherObject.getClass() ) return false ;
		//将otherObject转成Person类
		Person person = (Person)otherObject ;
		return this.getName().equals(person.getName()) 
				&& this.getSex().equals(person.getSex()) 
				&& this.getAge() == person.getAge() ;
		
	}


	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	
	public String name = null;
	public String sex  = null ;
	public int    age  = 0 ;
	
}