Zhang Yao on the eighth week

3. Define a notebook class with
two attributes: color (char) and cpu model (int). [Mandatory questions]
• 3.1 Two construction methods without parameters and with parameters; the construction method with parameters can
assign values ​​to each attribute while creating the object;
• 3.2 the method of outputting notebook information
• 3.3 and then write a test class, Test the various
methods of the notebook class .

package test;

public class aa {
	char color;
	int cpu;

    aa() {
   }
     aa(char color, int cpu) {
		this.color = color;
		this.cpu = cpu;
	}

    void a() {
		System.out.println("颜色:"+color);
		System.out.println( "型号:"+cpu);
	}
public static void main(String[] args) {
	aa a= new aa('a',4689);
	a.a();
   }
}

　　

 

 

 

5. Define two classes, described as follows: [Mandatory questions]
• 5.1 Define a human Person:
• 5.1.1 Define a method sayHello (), which can send a question
“hello, my name is XXX” to each other
• 5.1 .2 has three attributes: name, height, weight / age
• 5.2 defines a PersonCreate class:
• 5.2.1 creates two objects, namely zhangsan, 33 years old, 1.73
; lishi, 44, 1.74
• 5.2.2 call objects separately The sayHello () method.

package test;

public class person {
	String name;
	double height;
	int age;

	person (String name, double height, int age) {
		this.name = name;
		this.height = height;
		this.age = age;
	}

	void sayHello() {
		System.out.println("hello,my name is  " + name+" "+height+"m"+" "+age+"岁");
	}
}
package test;

public class personcreate {
	public static void main(String[] args) {
		person a = new person("lishi", 1.80, 23);
		person b = new person("wanger", 1.69, 19);

		a.sayHello();
		b.sayHello();
	}

}