第十二次作业

1

package 第九次作业;

public class Point {
    int x;
    int y;

    public Point(int x0, int y0) {
        this.x = x0;
        this.y = y0;
    }

    public Point() {
    }

    
    public void movePoint(int dx, int dy) {
        this.x += dx;
        this.y += dy;

    }

    
    public static void main(String[] args) {
        Point p1 = new Point(6,2);
        p1.movePoint(3, 6);
        System.out.println("p1X的坐标为：" + p1.x + "  " + "p1Y的坐标为:" + p1.y);
        Point p2 = new Point(6, 2);
        p2.movePoint(6, 3);
        System.out.println("p2X的坐标为：" + p2.x + "  " + "p2Y的坐标为:" + p2.y);

    }
}

　　

 

 2

public class Rectangle {
	  int length;
	  int width;
	  public int getArea(int length,int width){
	      return length*width;
	  }
	  public int getPer(int length,int width){
	      return (length+width)*2;
	  }
	  public void showAll(){
	      System.out.println("矩形的长是"+length+"矩形的宽是"+width+"周长是"+(length+width)*2+"面积是"+length*width);
	  }
	  public Rectangle(int length, int width) {
	        super();
	        this.length = length;
	        this.width = width;
	    }
	    public static void main(String[] args) {
	        // TODO Auto-generated method stub
	        Rectangle r=new Rectangle(8, 6);
	        r.showAll();
	    }
	}

　　

 

 3.

package 第九次作业;

public class bjb {
    char coulour;
       int cpu;
       public void show() {
           System.out.println("笔记本颜色是" + coulour + "色" + ",型号是" + cpu);
       }
       public bjb(char coulour, int cpu) {
           super();
           this.coulour = coulour;
           this.cpu = cpu;
       }
       public bjb() {
           super();
       }
}

　　

public class bjb1 {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        bjb a = new bjb();
        a.coulour = '红';
        a.cpu = 9;
        a.show();
        bjb a1 = new bjb('白', 7);
        a1.show();
    }
}