上机作业4.23

package ww;

public class Rectangle {
	int cpu;
	char color;

	public void all() {
		System.out.println("颜色是" + color);
		System.out.println("cpu是" + cpu);

	}
}
package ww;

public class text {

	public static void main(String[] args) {
		
			Rectangle r1=new Rectangle();
			r1.color='黑';
			r1.cpu=9100;
			r1.all();
		
	}

}

　　

 

 

package www;

public class Person {

	double height;
	int age;
	String name;

	public void sayHello() {
		System.out.println("Hello,my name is "+name);
	}

}
package www;

public class PersonCreate {

	public static void main(String[] args) {
		Person p1=new Person();
		p1.age=34;
		p1.height=1.73;
		p1.name="zhangsan";
		p1.sayHello();
		Person p2=new Person();
		p2.age=44;
		p2.height=1.74;
		p2.name="lishi";
		p2.sayHello();
	}

}