How to use for loop.

gistfile1.txt

import java.util.*;

class Untitled {
    
  public static void main(String[] args) {
    String string = "5,6,7,8";
    String[] strings = string.split(",");   // this array has 4 numbers
    
    // "for loop" first example
    for(String str : strings)   // for loop difference
    {
      int number = Integer.parseInt(str);    // 'str' difference
      
      // Example of how to use if/else
      if(number == 5 || number == 6) {
        number += 5;
      }
      else {
        number -= 8;
      }
      
      System.out.println(number);
    }
    
    // "for loop" second example
    for(int idx = 0; idx < strings.length; idx++)    // for loop difference
    {
      int number = Integer.parseInt(strings[idx]);  // strings[idx] difference
      
      // Example of how to use if/else
      if(number == 5 || number == 6) {
        number += 5;
      }
      else {
        number -= 8;
      }
      
      System.out.println(number);      
    }    
  }
}