1.定义一个笔记本类,该类有颜色(char)和cpu
型号(int)两个属性。 [必做题]
• 1.1 无参和有参的两个构造方法;有参构造方法可以在创建对象的同时为每个属性赋值;
• 1.2 输出笔记本信息的方法
• 1.3 然后编写一个测试类,测试笔记本类的各个方法。
public class book { char color; int cpu; public void show() { System.out.println("该笔记本的颜色是:" + color); System.out.println("该笔记本CPU的型号为:" + cpu); } }
import java.awt.Color; import java.util.Scanner; public class practice_week8 { public static void main(String[] args) { // TODO Auto-generated method stub book a = new book(); a.cpu = 01; a.color = '黑'; a.show(); } }
2.定义两个类,描述如下: [必做题]
• 2.1定义一个人类Person:
• 2.1.1定义一个方法sayHello(),可以向对方发出问候语“hello,my name is XXX”
• 2.1.2有三个属性:名字、身高、体重
• 2.2定义一个PersonCreate类:
• 2.2.1创建两个对象,分别是zhangsan,33岁,1.73;lishi,44,1.74
• 2.2.2分别调用对象的sayHello()方法。
public class Person { String name; double height; int weight; int age; public void sayhello() { System.out.println("hello,my name is " + name); System.out.println("my height is " + height + "米"); System.out.println("my weight is " + weight + "斤"); System.out.println("my age is " + age + "岁"); } }
public class PersonCreate { public static void main(String[] args) { // TODO Auto-generated method stub Person a = new Person(); Person b = new Person(); a.name ="张三"; a.age = 33; a.height = 1.73; a.weight = 135; b.name = "李十"; b.age = 44; b.height = 1.74; b.weight = 140; a.sayhello(); b.sayhello(); } }