Two ways of traversing List in Java

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In java, there are two ways to traverse List using for loop and for-each loop.

1. Use for loop to traverse List

2. Use for-each to traverse the List

Note: When using the for-each loop, you cannot modify the elements in the List. If you need to modify the elements, you should use the for loop to traverse.

The example code is as follows:

import java.util.ArrayList;
import java.util.List;

public class Demo {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();
        // 添加元素
        list.add("a");
        list.add("b");
        list.add("c");

        // 1.使用for循环遍历List
        for (int i = 0; i < list.size(); i++) {
            System.out.println(list.get(i));
        }

        // 2.使用for-each循环遍历
        for (String element : list) {
            System.out.println(element);
        }
    }
}

operation result: