在java中交换字符串中的字符组？

public class StringCharacterSwap {
    public static String swapCharacters(String input, int index1, int index2) {
        char[] charArray = input.toCharArray();
        
        // 检查索引是否有效
        if (index1 < 0 || index1 >= charArray.length || index2 < 0 || index2 >= charArray.length) {
            throw new IllegalArgumentException("Invalid index");
        }
        
        // 交换字符
        char temp = charArray[index1];
        charArray[index1] = charArray[index2];
        charArray[index2] = temp;
        
        return new String(charArray);
    }
    
    public static void main(String[] args) {
        String input = "Hello World";
        int index1 = 1;
        int index2 = 8;
        
        String swappedString = swapCharacters(input, index1, index2);
        System.out.println("Swapped String: " + swappedString);
    }
}