面向对象基础入门小练习

public class TestOOP { public static void main(String[] args) { //1.创建Dog类型的对象，并保存在Dog1变量当中 Dog dog1 = new Dog(); //2.访问属性：为各个属性赋值 dog1.breed = "金毛"; System.out.println(dog1.breed); dog1.age = 1; dog1.sex = "雌"; dog1.furColor = "black"; dog1.eat(); dog1.sleep(); System.out.println("------------------------------------------"); Dog dog2 = new Dog(); dog2.breed = "哈士奇"; System.out.println(dog2.breed); dog2.age = 2; dog2.sex = "雄"; dog2.furColor = "red"; dog2.eat(); dog2.sleep(); } } class Dog { //在现实中的一组相同或类似的对象中，提取共性的特征和行为，保存在程序中的模板（类） //属性-实例变量 String breed;//品种 int age;//年龄 String sex;//性别 String furColor;//毛色 //方法-实例方法 public void eat() { System.out.println("eating..."); } public void sleep(){ System.out.println("sleeping..."); } } /* 定义学生类： 属性：姓名（name）、年龄（age）、性别(sex)、分数(score) 方法：打招呼(sayHi)//打印学生所有信息 创建多个学生对象，为其各个属性赋值，并调用方法 */ public class TestStudent { public static void main(String[] args) { Student stu1 = new Student(); stu1.name = "zhu"; stu1.age = 1; stu1.sex = "男"; stu1.score = 100; stu1.sayHi(); System.out.println("-------------------------------------------------"); Student stu2 = new Student(); stu2.name = "zhuzhu"; stu2.age = 2; stu2.sex = "man"; stu2.score = 74.2; stu2.sayHi(); } } class Student { String name; //姓名 int age; //年龄 String sex; //性别 double score; //分数 public void sayHi() { System.out.println("大家好，我是" + name + ",今年" + age + "岁，" + "性别 ：" + sex + ",此次考试分数：" + score); } }