Java array list删除元素

你可以使用 ArrayList 的 remove() 方法来删除指定索引位置上的元素，或者使用 remove(Object obj) 方法来删除指定元素。下面是示例代码：

import java.util.ArrayList;

public class Main {
  public static void main(String[] args) {
    ArrayList<String> fruits = new ArrayList<String>();
    fruits.add("Apple");
    fruits.add("Banana");
    fruits.add("Orange");
    System.out.println("Fruits before removing: " + fruits);

    // removing element at index 1
    fruits.remove(1);
    System.out.println("Fruits after removing element at index 1: " + fruits);

    // removing element "Orange"
    fruits.remove("Orange");
    System.out.println("Fruits after removing element \"Orange\": " + fruits);
  }
}

输出结果为：

Fruits before removing: [Apple, Banana, Orange]
Fruits after removing element at index 1: [Apple, Orange]
Fruits after removing element "Orange": [Apple]