第三周：接口

class Student{
	int stuNo;
	String stuName;

	@Override
	public boolean equals(Object obj){
		if(obj instanceof Student){
			Student anotherStudent = (Student)obj;
			if(this.stuNo == anotherStudent.stuNo && this.stuName.equals(anotherStudent.stuName)){
				return true;
			}else{
				return false;
			}
		}else{
			return false;
		}
	}

	@Override
	public int hashCode(){
		return this.stuNo * this.stuNo + 12;
	}

	@Override
	public String toString(){
		return "学号：" + this.stuNo + ",姓名:" + this.stuName;
	}
	
}

class A{
}

public class Example01{
	public static void main(String[] args){
		Student stu01 = new Student();
		stu01.stuNo = 111;
		stu01.stuName = "zhangsan";

		Student stu02 = new Student();
		stu02.stuNo = 111;
		stu02.stuName = "zhangsan";

		if(stu01.equals(stu02)){
			System.out.println("是同一个学生");
		}else{
			System.out.println("不是同一个学生");
		}

		A a = new A();
		System.out.println(stu01.equals(a));

		//System.out.println("学号：" + stu01.stuNo + ",姓名:" + stu01.stuName);
		System.out.println(stu01);
	}
}