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

Code Example 1

ArrayList<String> namesList = new ArrayList<String>(Arrays.asList( "alex", "brian", "charles") );
         
for(String name : namesList)
{
    System.out.println(name);
}

Code Example 2

Iterator<String> crunchifyIterator = crunchifyList.iterator();
        while (crunchifyIterator.hasNext()) {
            System.out.println(crunchifyIterator.next());
        }

Code Example 3

// 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++) {
  
  System.out.println(myArrayList.get(i));
  // will print each index as it loops
}

Code Example 4

for (int i = 0; i < crunchifyList.size(); i++) {
            System.out.println(crunchifyList.get(i));
        }

Code Example 5

// Using Classic For Loop
for (int i=0; i<myArrayList.size(); i++) {
    System.out.println(myArrayList.get(i));
}
/*****************************************************/
//Advanced For Loop - ArrayList<String> 
for(String str : myArrayList) {
    System.out.println(str);
}
/*****************************************************/
//Using Iterator
Iterator arrayListIterator = myArrayList.iterator();
while (arrayListIterator.hasNext()) {
    System.out.println(arrayListIterator.next());
}
/*****************************************************/
//ForEach - java 8 - ArrayList<String>
myArrayList.forEach( str -> System.out.println(str));

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