java - What's wrong with this for loop? -

I am making a dice game for Android and I have this loop, which is an array rolled out on roll Fills with "j" It went like this

  int [] roll = new int [6]; {Roll [j] = (int) (monastery. Randem) * 5) for (int j: roll); Roll [ja] ++; Logs. I (getclass (). GetName (), "roll [[+ + + + + +] =" + roll [ja]); }   
 except the output (in the logfile)  
  roll [0] = 4 rolls [0] = 2 rolls [0] = 3 rolls [0] = 6 rolls [0] = 3 rolls [0] = 4   
 and when I change the code on  
  int [] roll = New int [6]; For (int j = 0; j and lt; roll length; j ++) {roll [j] = (int) (math.rendum) * 5); Roll [ja] ++; Logs. I (getclass (). GetName (), "roll [[+ + + + + +] =" + roll [ja]); }   
 The output is correct  
  rolls [0] = 4 rolls [1] = 2 rolls [2] = 3 rolls [3] = 6 rolls [4] = 3 rolls [5] = 4   
 I should be a little stupid.   
 
 
 Statement:  
 for  (int j: roll) < / Code>  
  roll , not index since arrays are started in Java, value  j  zero for each of 6 iterations is.