Week 8 homework (4.23)

3. Define a notebook class with
two attributes: color (char) and cpu model (int). [Will do questions]
• 3.1 and two no-argument constructor has the Senate; arg constructor may have
to assign for each property while creating an object;
methods • 3.2 output notebook information
• 3.3 and then write a test class, Test the various
methods of the notebook class .

package lei; 

public  class Notebook {
     char color;
     int cpu;
     public  void xx () { 
        System.out.println ( "notebook color is:" + color + "; cpu model is:" + cpu); 
    } 

}

package lei;

public class Test {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Notebook n1=new Notebook();
        n1.cpu=12;
        n1.color='b';
        n1.xx();
        
    }

}

5, define two classes, described as follows: [will do questions]
• 5.1 definition of a human the Person:
• 5.1.1 define a method sayHello (), you can send out to ask each other
greeting "the Hello, My name IS XXX"
• 5.1 .2 has three attributes: name, height, and weight
• 5.2 defines a PersonCreate class:
• 5.2.1 creates two objects, namely zhangsan, 33 years old, 1.73
; lisi, 44, 1.74
• 5.2.2 calls the sayHello of the objects respectively ()method.

package lei;

public class Person {
    String name;
    double height;
    int age;
    public void sayHello(){
        System.out.println("hello,my name is "+name);
        System.out.println("hello,my height is "+height);
        System.out.println("hello,my age is "+age);
    }

}

package lei;

public class PersonCreate {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Person p1=new Person();
        p1.name="zhangsan";
        p1.height=1.73;
        p1.age=33;
        p1.sayHello();
        Person p2 = new Person();
        p2.name="lishi";
        p2.height=1.74;
        p2.age=44;
        p2.sayHello();

    }

}