Check out example codes for "iterate through an arraylist java". It will help you in understanding the concepts better.

Code Example 1

// will iterate through each index of the array list
// using the size of the array list as the max.
// (the last index is the size of the array list - 1)

for (int i = 0; i < myArrayList.size(); i++) {
  // will print each index as it loops

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