Java: create objects and call their methods in loops

Processing Coding Questions
2

your for loop it is outside of any methods.
assuming your arr variable it is global and you want create 10 objects in the setup function you can arrange your code as this :


Obj[] arr = new Obj[10];
int[] avVal = {-1, 1};

void setup() 
{
  size(600, 320);
  
  for (int i = 0; i < 10; i++) 
  { 
    Obj ob = new Obj();
    ob.x = int(random(600)); 
    ob.y = int(random(320)); 
    arr[i] = ob;
  }
}

void draw() 
{
  for (int u = 0; u < 10; u++) 
  { 
    arr[u].render(); 
  }
}

class Obj 
{
  int x;
  int y;

  void render() 
  {
    int ran1 = int(random(2));
    int ran2 = int(random(2));
    int vx = int(random(2));
    int vy = int(random(2));
    this.x += vx*avVal[ran1];
    this.y += vy*avVal[ran2];
    point(this.x, this.y);
  }
}
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