Java 集合 ArrayList remove(int index)方法

方法remove(int index)用于从列表中删除指定索引的元素。它删除一个元素并返回相同的元素。如果指定的索引小于零或大于列表的大小（ArrayList的索引大小），则抛出IndexOutOfBoundsException。

public Object remove(int index)

例

package beginnersbook.com;import java.util.ArrayList;public class RemoveExample {   public static void main(String args[]) {       //String ArrayList       ArrayList<String> al = new ArrayList<String>();       al.add("AB");       al.add("CD");       al.add("EF");       al.add("GH");       al.add("AB");       al.add("YZ");       System.out.println("ArrayList before remove:");       for(String var: al){            System.out.println(var);       }       //Removing 1st element       al.remove(0);       //Removing 3rd element from the remaining list       al.remove(2);       //Removing 4th element from the remaining list       al.remove(2);       System.out.println("ArrayList After remove:");       for(String var2: al){             System.out.println(var2);       }    }}

输出：

ArrayList before remove:ABCDEFGHABYZArrayList After remove:CDEFYZ