如何在此ArrayList中搜索null，然后将其替换为另一个对象？

import java.util.ArrayList;

public class NullSearchAndReplace {
    public static void main(String[] args) {
        ArrayList<Object> arrayList = new ArrayList<>();
        arrayList.add("Apple");
        arrayList.add(null);
        arrayList.add("Orange");
        arrayList.add(null);
        arrayList.add("Banana");

        System.out.println("原始ArrayList：" + arrayList);

        // 搜索并替换null元素
        int index = arrayList.indexOf(null);
        while (index != -1) {
            arrayList.set(index, "Replacement Object");
            index = arrayList.indexOf(null);
        }

        System.out.println("替换后的ArrayList：" + arrayList);
    }
}

原始ArrayList：[Apple, null, Orange, null, Banana]
替换后的ArrayList：[Apple, Replacement Object, Orange, Replacement Object, Banana]