class

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名称

class

示例
 // Declare and construct two objects (h1, h2) from the class HLine  HLine h1 = new HLine(20, 2.0);

HLine h2 = new HLine(50, 2.5);




void setup()
 {  
size(200, 200);


frameRate(30);


  } 
void draw()
{  
 background(204);



h1.update();


 
h2.update();


  }  
  class HLine{  
float ypos, speed;

 
 HLine (float y,float s)
{
 ypos = y;


speed = s;

 
 }   
void update()
{
ypos += speed;


if (ypos > height)
{
  ypos = 0;


  }      line(0, ypos, width, ypos);



  } 
  }  
描述 Keyword used to indicate the declaration of a class. A class is a composite of fields (data) and methods (functions that are a part of the class) which may be instantiated as objects. The first letter of a class name is usually uppercase to separate it from other kinds of variables. A related tutorial on Object-Oriented Programming is hosted on the Oracle website.
语法
 class ClassName{  
statements
  } 
参数
ClassName Any valid variable name
statements any valid statements
相关 Object

Updated on October 2, 2018 05:02:16pm EDT

class