rectangle.java

还不错的java基本实例

/*
 * 创建日期 2006-1-31
 *
 * TODO 要更改此生成的文件的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
package ch6;
public class Rectangle {
    private int x ;
    private int y ;
    private int width ;
    private int height ;

    public  Rectangle(){
        this(5,10,50,25);
        x = 5;
        y = 10;
        width = 50;
        height = 25;   
    }
    
	public Rectangle(int myx, int myy,int mywidth,int myheight)
	{
		x=myx;
		y=myy;
		width=mywidth;
		height=myheight;
	}
	
	  public Rectangle(Point mypoint  , int mywidth , int myheight ){
      x = mypoint.getX();
      y = mypoint.getY();
      width = mywidth;
      height = myheight;
	  }


    public void setX(int ax ){
        x = ax;
    } 
    public int getX() {
        return x;
    }

    public void setY(int ay){
        x = ay;
    }
    public int getY() {
        return y;
    }

    public void setWidth(int awidth ){
        width = awidth;
    }
    public int getWidth() {
        if (width > 0) 
            return width;
        else
            return 0;
    }

    public void setHeight(int aheight){
        height = aheight;
    }
    public int getHeight() {
        return height;
    }
    
    public int getArea()
	{
		 return width*height;
	}


    public void offset(int ax , int ay ){
        x = x + ax;
        y = y + ay;
    }
    
	
    public static Rectangle Inflate(Rectangle rec  , int inwidth , int inheight ){
       
       // Rectangle1 RECT = new Rectangle1(20,30,60,50);	
        Rectangle RECT = new Rectangle(rec.x,rec.y,rec.width,rec.height);	
		RECT.x = rec.x - inwidth;
		RECT.y = rec.y - inheight;
		RECT.height = rec.height + 2 * inheight;
		RECT.width = rec.width + 2 * inwidth;
        return RECT;
    }
    
    public void Inflate(int inwidth,int inheight)
	{
		x=x-inwidth;
		y=y-inheight;
		height=height+2*inheight;
		width=width+2*inwidth;
	}
    
    public void Inflate(Point p)
	{
		x=x-p.getX();
		y=y-p.getY() ;
		height=height+2*p.getY();
		width=width+2*p.getX();
	}
    
    public void Inflate(Size s)
	{
		x=x-s.getWidth();
		y=y-s.getHeight() ;
		height=height+2*s.getHeight();
		width=width+2*s.getHeight();
	}


    
    public String print()
	{  	String str;
		str="X="+x+", Y="+y+"\n";
		str+="Width="+width+"   Height="+height+"\n";
		str+=" Area="+ getArea()+"\n";
		return str;
	}
}