Java上机作业4.30

package ak;

public class Point {
	int x;
	int y;

	void Ponit() {
		System.out.println(x);
		System.out.println(y);

	}

	void Ponit(int x0, int y0) {
		x = x0;
		y = y0;
	}

	void movePonit(int dx, int dy) {
		x += dx;
		y += dy;
		System.out.println("坐标是" + "(" + x + "," + y + ")");
	}
	public static void main(String[] args) {
		Point p1 = new Point();
		p1.x=1;
		p1.y=2;
		p1.movePonit(3, 4);
		Point p2 = new Point();
		p2.x=11;
		p2.y=23 ;
		p2.movePonit(3,9);
	}
}
	

　　

 

 

 

package ak;


public class Rectangle {
	int length;
	int width;

	public void getArea() {
		System.out.println(length * width);
	}

	public void getPer() {
		System.out.println((length + width) * 2);
	}

	public void getAll() {
		System.out.println("长是" + length);
		System.out.println("宽是" + width);
		System.out.println("面积是");
		getArea();
		System.out.println("周长是");
		getPer();
	}
	void Rectangle(int width1, int length1){
		length=length1;
		width=width1;
		getAll();
		
	}
	public static void main(String[] args) {
		Rectangle r1 = new Rectangle();
		r1.Rectangle(4, 6);
		
	}

}

　　

 

 

 

package ak;

public class Book {
	static int cpu;
	static char color;

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

	static void book(int cpu1, char color1) {
		cpu = cpu1;
		color = color1;
		all();
	}

	public static void main(String[] args) {
		Book r1 = new Book();
		r1.color = '黑';
		r1.cpu = 9100;
		r1.all();
		book(9000, '白');

	}
}

　　

 

 

 

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();
    }
 
}