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 }
时间: 2024-10-12 17:17:54