3、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]
• 3.1 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;
• 3.2 输出笔记本信息的方法
• 3.3 然后编写一个测试类,测试笔记本类的各个
方法

package demo8_1eighthweek_Thursday;
 
public class Person {
    String name;
    double height;
    int age;
 
    public void sayHello() {
        System.out.println("hello,my name is" + name);
        System.out.println("my height is" + height);
        System.out.println("my age is" + age);
 
    }
}
package demo8_1eighthweek_Thursday;
 
public class PersonCreate {
 
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Person p1 = new Person();
        p1.name="zhangsan";
        p1.age=33;
        p1.height=1.73;
        Person p2 = new Person();
        p2.name="lisi";
        p2.age=44;
        p2.height=1.74;
        p1.sayHello();
        p2.sayHello();
         
 
    }
 
}

5、定义两个类,描述如下: [必做题]

• 5.1定义一个人类Person:
• 5.1.1定义一个方法sayHello(),可以向对方发出问
候语“hello,my name is XXX”
• 5.1.2有三个属性:名字、身高、体重
• 5.2定义一个PersonCreate类:
• 5.2.1创建两个对象,分别是zhangsan,33岁,1.73
;lishi,44,1.74
• 5.2.2分别调用对象的sayHello()方法。

package demo8_1eighthweek_Thursday;
 
public class computer {
    char color;
    int cpu;
    public void com() {
        System.out.println("颜色为" + color);
        System.out.println("cpu型号为" + cpu);
 
    }
 
}
package demo8_1eighthweek_Thursday;
 
public class computertest {
 
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        computer p1 = new computer();
        p1.color='a';
        p1.cpu=33;
        p1.com();
 
    }
 
}