类名+函数名（参数1，参数2.....）{.......return this;}

下述的函数是这样定义的： 类名+函数名（参数1，参数2.....）{.......return this;}

                                   int +函数名（参数1，参数2.....）{.......return int;}

                                   short+函数名（参数1，参数2.....）{.......return short;}

                                   double+函数名（参数1，参数2.....）{.......return double;} 

                                  String+函数名（参数1，参数2.....）{.......return String;} 

                                   int[]+函数名（参数1，参数2.....）{.......return int[];}

                                   String[]+函数名（参数1，参数2.....）{.......return String[];} 

                                   void+函数名（参数1，参数2.....）{...................................} 

 1 import java.awt.Point;
 2   class rectangle
 3     { int x1=0;
 4       int y1=0;
 5       int x2=0;
 6       int y2=0;
 7      
 8      rectangle point(int x,int y,int z,int w)
 9       {x1= x;
10        y1= y;
11        x2= z;
12        y2= w;
13        return this;
14        }
15      rectangle point(Point topleft,Point rightbottom)
16       {x1=topleft.x;
17        y1=topleft.y;
18        x2=rightbottom.x;
19        y2=rightbottom.y;
20        return this;
21         }
22       rectangle point(Point topleft,int w,int h)
23        { x1= topleft.x;
24          y1= topleft.y;
25          x2= topleft.x + w;
26          y2= topleft.y - h;
27         return this;
28         }
29       public static void main(String[] args)
30 
31        { rectangle experiment = new rectangle();
32          experiment.point(1,2,3,4);
33          System.out.print(experiment.x1+" "+experiment.y1+" "+experiment.x2+" "+experiment.y2);
34          experiment.point(new Point(1,2),new Point(3,4));
35          System.out.print(experiment.x1+" "+experiment.y1+" "+experiment.x2+" "+experiment.y2);
36          experiment.point(new Point(1,2),3,4);
37          System.out.print(experiment.x1+" "+experiment.y1+" "+experiment.x2+" "+experiment.y2);
38         }
39    
40    }

 

posted @ 2015-12-20 17:57  lubocsu  阅读(942)  评论(0)  编辑  收藏  举报