第十次java作业

package java11;

public class Point {
	int x;
	int y;
	
	public Point(int x0,int y0){
		super();
		this.x=x0;
		this.y=y0;
	}
	public Point(){
		super();
	}
	public String movePoint(int dx,int dy){
		x+=dx;
		y+=dy;
		return ("x为"+x+"  y为"+y);
	}
	public static void main(String[] args) {
	       Point p1 = new Point(1, 2);
	       System.out.println(p1.movePoint(5, 6));
	       Point p2 = new Point(2, 3);
	       System.out.println(p2.movePoint(5, 6));
	     
    }
}

　　

package java11;

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("长方形的长是"+length+",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(5,7);
		r.showAll();

	}

}

　　

 

package java11;

public class bj {
	char coulour;
	int cpu;
	public void show(){
		System.out.println("笔记本颜色是"+coulour+"色,"+"型号是"+cpu);
	}
	public bj(char coulour,int cpu){
		super();
		this.coulour=coulour;
		this.cpu=cpu;
	}
	public  bj(){
		super();
	}
	
	
	
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		 bj c=new bj();
	        c.coulour='黑';
	        c.cpu=1;
	        c.show();
	        bj c1=new bj('白',2);
	        c1.show();

	}

}