java - The method returns true if the integer is divisible by 3 and returns false if the integer is not divisible by 3 -

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That's what I've done so far; I have to use this main method. 

  public class HW4 {public static boolean is divisiblebittithy (string n) {int sum = 0; Intestine value; For (int k = 0; k & lt; n.length (); k ++) {char ch = n.charAt (k); Value = character Dirty value (ca); Yoga = yoga * value; } Refund amount * 3 == 0; }}   
 It always comes true and I'm actually stuck in this part. So if you can, can you help me?   
 
 
 A  sum  is a cumulative  extra  ( Not multiplied).  
 Replace this line:  
  sum = sum * value;   
 to  
  sum = sum + value;   
 Or more abridged version:  
  sum + = value;

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