How to access values in a Java ArrayList?

There are several ways to retrieve values in a Java ArrayList:

1. Use the get() method to retrieve the element at a specified position by index. For example, list.get(0) can be used to retrieve the first element in the list.
2. To iterate through an ArrayList using an Iterator and retrieve the next element using the next() method. For example, the following code can be used to iterate through all elements in an ArrayList:

Iterator<String> iterator = list.iterator();
while (iterator.hasNext()) {
    String element = iterator.next();
    // 处理元素
}

1. Iterate through all elements in the ArrayList using a for-each loop. For example:

for (String element : list) {
    // 处理元素
}

1. You can utilize the Stream API in Java 8 to manipulate the elements in an ArrayList. For example, you can use the following code to print all the elements.

list.stream().forEach(System.out::println);

The above are common methods for retrieving values, choose the appropriate method based on your needs to access elements in an ArrayList.